Showing posts with label Binding. Show all posts
Showing posts with label Binding. Show all posts

Polypropylene Machine Screw, Binding Head, Slotted Drive, 1/4"-20, 3/8" Length (Pack of 100)

Polypropylene Machine Screw, Binding Head, Slotted Drive, 1/4"-20, 3/8" Length (Pack of 100) Reviews



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Polypropylene Machine Screw, Binding Head, Slotted Drive, 1/4"-20, 3/8" Length (Pack of 100) Feature

  • Machine Screws are often used with nuts or driven into tapped holes
  • Polypropylene is suitable for applications where resistance to chemicals and water (including steam) is important
  • Binding head provides a large surface area for extra surface contact under the head
  • Driven by a flat-bladed driver
  • Coarse threads are better for brittle materials, and will assemble and disassemble more quickly than fine threads
Machine Screws, also referred to as Machine Bolts, are often used with nuts or driven into tapped holes. They come in a variety of head types and drive styles, but are generally available in smaller sizes.

Polypropylene is a thermoplastic which is autoclavable (meaning that it can be sterilized using steam), and is non-hydroscopic (it won't absorb water even after extended periods of contact). Polypropylene has excellent chemical resistance to dilute acids, concentrated acids (except oxidizing acids), alkalis, alcohols, detergents, and water. Polypropylene resists aromatic hydrocarbons, chlorinated hydrocarbons, greases, and oils at room temperature. Maximum operating temperature is 212 degrees Fahrenheit. Polypropylene has a low co-efficient of friction and a high dielectric strength (meaning it operates well as an insulator). Polypropylene has approximately half the tensile strength and impact strength of Nylon 6/6. The tensile strength of Polypropylene is 5000 psi (pounds per square inch). Impact Strength, as measured by the Izod impact test method (which measures force required to break material) is 0.5 pounds per foot.

Generally used in electrical or radio work, these fasteners are slightly undercut under the head. That provides the ability to bind stranded wire tightly and prevent fraying. Common applications for slotted screws include woodworking, although the drive style is not designed to be used with power drivers.

A threaded fastener's size name includes information about the major external diameter, followed by the threads per inch, which indicates if it is coarse or fine. Coarse threads are better when working with brittle materials; they are sturdier and are easier to thread and unthread compared to fine. Coarse threading also allows for thicker coatings and platings.


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Oct 12, 2011 03:01:30

Stainless Steel Machine Screw, Binding Head, Slotted Drive, #10-24, 7/8" Length (Pack of 100)

Stainless Steel Machine Screw, Binding Head, Slotted Drive, #10-24, 7/8" Length (Pack of 100) Reviews



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Stainless Steel Machine Screw, Binding Head, Slotted Drive, #10-24, 7/8" Length (Pack of 100) Feature

  • Machine Screws are often used with nuts or driven into tapped holes
  • Stainless Steel is suitable where formability and cost are important considerations
  • Binding head provides a large surface area for extra surface contact under the head
  • Driven by a flat-bladed driver
  • Coarse threads are better for brittle materials, and will assemble and disassemble more quickly than fine threads
Machine Screws, also referred to as Machine Bolts, are often used with nuts or driven into tapped holes. They come in a variety of head types and drive styles, but are generally available in smaller sizes.

Stainless steels are used for their corrosion resistance, high-temperature strength, scaling resistance, and low-temperature toughness.  These properties account for their extremely wide use in practically every industry. Austenitic Stainless Steels are alloys of iron and carbon that contain between 16% and 30% Chromium, a maximum of 0.15% carbon, along with Nickel (or Manganese), and other alloying elements.  The chromium, which helps develop a passive surface oxide film, provides corrosion resistance in stainless steels.   Austenitic Stainless Steels are designated by a 3 digit SAE Stainless Steel Grade beginning with the number 3 (e.g. 304, 316).  Another common naming convention for Austenitic Stainless Steels are 18/8, 18/10, 18/0, etc. where the 18 refers to the % of Chromium and 8 to the % of Nickel contained in the material.    

Generally used in electrical or radio work, these fasteners are slightly undercut under the head. That provides the ability to bind stranded wire tightly and prevent fraying. Common applications for slotted screws include woodworking, although the drive style is not designed to be used with power drivers.

A threaded fastener's size name includes information about the major external diameter, followed by the threads per inch, which indicates if it is coarse or fine. Coarse threads are better when working with brittle materials; they are sturdier and are easier to thread and unthread compared to fine. Coarse threading also allows for thicker coatings and platings.


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Oct 03, 2011 03:05:17

Precision Stainless Steel 303 Machine Screw, Binding Head, Slotted Drive, NAS, M.5-0.125, 0.120" Length (Pack of 10)

Precision Stainless Steel 303 Machine Screw, Binding Head, Slotted Drive, NAS, M.5-0.125, 0.120" Length (Pack of 10) Reviews



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Precision Stainless Steel 303 Machine Screw, Binding Head, Slotted Drive, NAS, M.5-0.125, 0.120" Length (Pack of 10) Feature

  • Machined, Precision, Instrument quality machine screws, manufactured to National Aerospace Standards
  • Precision, Burr free
  • Passivated 303 Stainless Steel Material conforms to AMS-5640 Type 1, ASTM-A-582, MIL-S-7720, QQS763C, QQS764B
  • Aerospace Quality
  • Medical Quality
Machine Screws, also referred to as Machine Bolts, are often used with nuts or driven into tapped holes. They come in a variety of head types and drive styles, but are generally available in smaller sizes.

Stainless steels are used for their corrosion resistance, high-temperature strength, scaling resistance, and low-temperature toughness. These properties account for their extremely wide use in practically every industry. Austenitic Stainless Steels are alloys of iron and carbon that contain between 16% and 30% Chromium, a maximum of 0.15% carbon, along with Nickel (or Manganese), and other alloying elements. The chromium, which helps develop a passive surface oxide film, provides corrosion resistance in stainless steels. Austenitic Stainless Steels are designated by a 3 digit SAE Stainless Steel Grade beginning with the number 3 (e.g. 304, 316).

Stainless Steel 303 contains 0.15% carbon, along with traces of sulfur and phosphorus which makes this a free machining alloy. Free machining refers to the ability to cut and finish the materials without heavy wear on the machining tools. Tensile Strength is 35000 psi (pounds per square inch). Passivation helps prevent corrosion in certain stainless steels by removing surface impurities that can be caused by machining or forming processes. These impurities block the normally occurring formation of a protective oxide coating on the steel.

Binding head provides a large surface area for extra surface contact under the head

A threaded fastener's size name includes information about the major external diameter (in millimeters), followed by the thread pitch (millimeters per thread), which indicates if it is coarse or fine. Fine threads are preferable when working with harder materials or when threading into a thin material. They are also stronger in tension than coarse threads, and generally provide higher shear strengths.


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Sep 25, 2011 16:25:27

Polypropylene Machine Screw, Binding Head, Slotted Drive, #10-32, 5/8" Length (Pack of 25)

Polypropylene Machine Screw, Binding Head, Slotted Drive, #10-32, 5/8" Length (Pack of 25) Reviews



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Polypropylene Machine Screw, Binding Head, Slotted Drive, #10-32, 5/8" Length (Pack of 25) Feature

  • Machine Screws are often used with nuts or driven into tapped holes
  • Polypropylene is suitable for applications where resistance to chemicals and water (including steam) is important
  • Binding head provides a large surface area for extra surface contact under the head
  • Driven by a flat-bladed driver
  • Fine threads tap better into harder materials and thin walls, and are stronger in tension than coarse threads
Machine Screws, also referred to as Machine Bolts, are often used with nuts or driven into tapped holes. They come in a variety of head types and drive styles, but are generally available in smaller sizes.

Polypropylene is a thermoplastic which is autoclavable (meaning that it can be sterilized using steam), and is non-hydroscopic (it won't absorb water even after extended periods of contact). Polypropylene has excellent chemical resistance to dilute acids, concentrated acids (except oxidizing acids), alkalis, alcohols, detergents, and water. Polypropylene resists aromatic hydrocarbons, chlorinated hydrocarbons, greases, and oils at room temperature. Maximum operating temperature is 212 degrees Fahrenheit. Polypropylene has a low co-efficient of friction and a high dielectric strength (meaning it operates well as an insulator). Polypropylene has approximately half the tensile strength and impact strength of Nylon 6/6. The tensile strength of Polypropylene is 5000 psi (pounds per square inch). Impact Strength, as measured by the Izod impact test method (which measures force required to break material) is 0.5 pounds per foot.

Generally used in electrical or radio work, these fasteners are slightly undercut under the head. That provides the ability to bind stranded wire tightly and prevent fraying. Common applications for slotted screws include woodworking, although the drive style is not designed to be used with power drivers.

A threaded fastener's size name includes information about the major external diameter, followed by the threads per inch, which indicates if it is coarse or fine. Fine threads are preferable when working with harder materials or when threading into a thin material. They are also stronger in tension than coarse threads, and generally provide higher shear strengths.


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Sep 22, 2011 23:51:05

Nylon 6/6 Machine Screw, Binding Head, Slotted Drive, #6-32, 3/16" Length (Pack of 25)

Nylon 6/6 Machine Screw, Binding Head, Slotted Drive, #6-32, 3/16" Length (Pack of 25) Reviews



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Nylon 6/6 Machine Screw, Binding Head, Slotted Drive, #6-32, 3/16" Length (Pack of 25) Feature

  • Machine Screws are often used with nuts or driven into tapped holes
  • Nylon 6/6 is suitable where non-conductivity, corrosion resistance, and cost are important considerations
  • Binding head provides a large surface area for extra surface contact under the head
  • Driven by a flat-bladed driver
  • Coarse threads are better for brittle materials, and will assemble and disassemble more quickly than fine threads
Machine Screws, also referred to as Machine Bolts, are often used with nuts or driven into tapped holes. They come in a variety of head types and drive styles, but are generally available in smaller sizes.

Nylon 6/6 is a general purpose thermoplastic with outstanding resistance to organic chemicals, acids and alkalis. Nylon wears well against other surfaces; it is readily machinable and may be milled, turned and cut with conventional machine tools. It does exhibit some dimensional swelling in wet applications which should be taken into account with its use. Tensile strength of this material is 12,000 psi (pounds per square inch).

Generally used in electrical or radio work, these fasteners are slightly undercut under the head. That provides the ability to bind stranded wire tightly and prevent fraying. Common applications for slotted screws include woodworking, although the drive style is not designed to be used with power drivers.

A threaded fastener's size name includes information about the major external diameter, followed by the threads per inch, which indicates if it is coarse or fine. Coarse threads are better when working with brittle materials; they are sturdier and are easier to thread and unthread compared to fine. Coarse threading also allows for thicker coatings and platings.


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Sep 09, 2011 16:23:07

Nylon 6/6 Machine Screw, Binding Head, Slotted Drive, #10-24, 1/8" Length (Pack of 100)

Nylon 6/6 Machine Screw, Binding Head, Slotted Drive, #10-24, 1/8" Length (Pack of 100) Reviews



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Nylon 6/6 Machine Screw, Binding Head, Slotted Drive, #10-24, 1/8" Length (Pack of 100) Feature

  • Machine Screws are often used with nuts or driven into tapped holes
  • Nylon 6/6 is suitable where non-conductivity, corrosion resistance, and cost are important considerations
  • Binding head provides a large surface area for extra surface contact under the head
  • Driven by a flat-bladed driver
  • Coarse threads are better for brittle materials, and will assemble and disassemble more quickly than fine threads
Machine Screws, also referred to as Machine Bolts, are often used with nuts or driven into tapped holes. They come in a variety of head types and drive styles, but are generally available in smaller sizes.

Nylon 6/6 is a general purpose thermoplastic with outstanding resistance to organic chemicals, acids and alkalis. Nylon wears well against other surfaces; it is readily machinable and may be milled, turned and cut with conventional machine tools. It does exhibit some dimensional swelling in wet applications which should be taken into account with its use. Tensile strength of this material is 12,000 psi (pounds per square inch).

Generally used in electrical or radio work, these fasteners are slightly undercut under the head. That provides the ability to bind stranded wire tightly and prevent fraying. Common applications for slotted screws include woodworking, although the drive style is not designed to be used with power drivers.

A threaded fastener's size name includes information about the major external diameter, followed by the threads per inch, which indicates if it is coarse or fine. Coarse threads are better when working with brittle materials; they are sturdier and are easier to thread and unthread compared to fine. Coarse threading also allows for thicker coatings and platings.


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Sep 08, 2011 15:03:04

Black Nylon 6/6 Machine Screw, Binding Head, Combination Phillips-Slotted Drive, #4-40, 1/2" Length (Pack of 100)

Black Nylon 6/6 Machine Screw, Binding Head, Combination Phillips-Slotted Drive, #4-40, 1/2" Length (Pack of 100) Reviews



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Black Nylon 6/6 Machine Screw, Binding Head, Combination Phillips-Slotted Drive, #4-40, 1/2" Length (Pack of 100) Feature

  • Machine Screws are often used with nuts or driven into tapped holes
  • Nylon 6/6 is suitable where non-conductivity, corrosion resistance, and cost are important considerations; black color
  • Binding head provides a large surface area for extra surface contact under the head
  • Accommodates both Phillips and Slotted drivers
  • Coarse threads are better for brittle materials, and will assemble and disassemble more quickly than fine threads
Machine Screws, also referred to as Machine Bolts, are often used with nuts or driven into tapped holes. They come in a variety of head types and drive styles, but are generally available in smaller sizes.

Nylon 6/6 is a general purpose thermoplastic with outstanding resistance to organic chemicals, acids and alkalis. Nylon wears well against other surfaces; it is readily machinable and may be milled, turned and cut with conventional machine tools. It does exhibit some dimensional swelling in wet applications which should be taken into account with its use. Tensile strength of this material is 12,000 psi (pounds per square inch).

Generally used in electrical or radio work, these fasteners are slightly undercut under the head. That provides the ability to bind stranded wire tightly and prevent fraying. Combination Phillips-Slotted drive styles allow for greater flexibility in choosing a drive tool (either Phillips or standard slotted).

A threaded fastener's size name includes information about the major external diameter, followed by the threads per inch, which indicates if it is coarse or fine. Coarse threads are better when working with brittle materials; they are sturdier and are easier to thread and unthread compared to fine. Coarse threading also allows for thicker coatings and platings.


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Sep 04, 2011 07:00:05

Nylon Machine Screw, Binding Head, Slotted Drive, #4-40, 1/2" Length (Pack of 10)

Nylon Machine Screw, Binding Head, Slotted Drive, #4-40, 1/2" Length (Pack of 10) Reviews



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Nylon Machine Screw, Binding Head, Slotted Drive, #4-40, 1/2" Length (Pack of 10) Feature

  • Machine Screws are often used with nuts or driven into tapped holes
  • Nylon 6/6 is suitable where non-conductivity, corrosion resistance, and cost are important considerations
  • Binding head provides a large surface area for extra surface contact under the head
  • Driven by a flat-bladed driver
  • Coarse threads are better for brittle materials, and will assemble and disassemble more quickly than fine threads
Machine Screws, also referred to as Machine Bolts, are often used with nuts or driven into tapped holes. They come in a variety of head types and drive styles, but are generally available in smaller sizes.

Nylon 6/6 is a general purpose thermoplastic with outstanding resistance to organic chemicals, acids and alkalis. Nylon wears well against other surfaces; it is readily machinable and may be milled, turned and cut with conventional machine tools. It does exhibit some dimensional swelling in wet applications which should be taken into account with its use. Tensile strength of this material is 12,000 psi (pounds per square inch).

Generally used in electrical or radio work, these fasteners are slightly undercut under the head. That provides the ability to bind stranded wire tightly and prevent fraying. Common applications for slotted screws include woodworking, although the drive style is not designed to be used with power drivers.

A threaded fastener's size name includes information about the major external diameter, followed by the threads per inch, which indicates if it is coarse or fine. Coarse threads are better when working with brittle materials; they are sturdier and are easier to thread and unthread compared to fine. Coarse threading also allows for thicker coatings and platings.


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Jul 18, 2011 10:36:05

Polypropylene Machine Screw, Binding Head, Slotted Drive, #4-40, 1/2" Length (Pack of 25)

Polypropylene Machine Screw, Binding Head, Slotted Drive, #4-40, 1/2" Length (Pack of 25) Reviews



Other Picture


Polypropylene Machine Screw, Binding Head, Slotted Drive, #4-40, 1/2" Length (Pack of 25) Feature

  • Machine Screws are often used with nuts or driven into tapped holes
  • Polypropylene is suitable for applications where resistance to chemicals and water (including steam) is important
  • Binding head provides a large surface area for extra surface contact under the head
  • Driven by a flat-bladed driver
  • Coarse threads are better for brittle materials, and will assemble and disassemble more quickly than fine threads
Machine Screws, also referred to as Machine Bolts, are often used with nuts or driven into tapped holes. They come in a variety of head types and drive styles, but are generally available in smaller sizes.

Polypropylene is a thermoplastic which is autoclavable (meaning that it can be sterilized using steam), and is non-hydroscopic (it won't absorb water even after extended periods of contact). Polypropylene has excellent chemical resistance to dilute acids, concentrated acids (except oxidizing acids), alkalis, alcohols, detergents, and water. Polypropylene resists aromatic hydrocarbons, chlorinated hydrocarbons, greases, and oils at room temperature. Maximum operating temperature is 212 degrees Fahrenheit. Polypropylene has a low co-efficient of friction and a high dielectric strength (meaning it operates well as an insulator). Polypropylene has approximately half the tensile strength and impact strength of Nylon 6/6. The tensile strength of Polypropylene is 5000 psi (pounds per square inch). Impact Strength, as measured by the Izod impact test method (which measures force required to break material) is 0.5 pounds per foot.

Generally used in electrical or radio work, these fasteners are slightly undercut under the head. That provides the ability to bind stranded wire tightly and prevent fraying. Common applications for slotted screws include woodworking, although the drive style is not designed to be used with power drivers.

A threaded fastener's size name includes information about the major external diameter, followed by the threads per inch, which indicates if it is coarse or fine. Coarse threads are better when working with brittle materials; they are sturdier and are easier to thread and unthread compared to fine. Coarse threading also allows for thicker coatings and platings.


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Jun 29, 2011 18:54:06

Black Nylon 6/6 Machine Screw, Binding Head, Combination Phillips-Slotted Drive, #6-32, 1" Length (Pack of 100)

Black Nylon 6/6 Machine Screw, Binding Head, Combination Phillips-Slotted Drive, #6-32, 1" Length (Pack of 100) Reviews



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Black Nylon 6/6 Machine Screw, Binding Head, Combination Phillips-Slotted Drive, #6-32, 1" Length (Pack of 100) Feature

  • Machine Screws are often used with nuts or driven into tapped holes
  • Nylon 6/6 is suitable where non-conductivity, corrosion resistance, and cost are important considerations; black color
  • Binding head provides a large surface area for extra surface contact under the head
  • Accommodates both Phillips and Slotted drivers
  • Coarse threads are better for brittle materials, and will assemble and disassemble more quickly than fine threads
Machine Screws, also referred to as Machine Bolts, are often used with nuts or driven into tapped holes. They come in a variety of head types and drive styles, but are generally available in smaller sizes.

Nylon 6/6 is a general purpose thermoplastic with outstanding resistance to organic chemicals, acids and alkalis. Nylon wears well against other surfaces; it is readily machinable and may be milled, turned and cut with conventional machine tools. It does exhibit some dimensional swelling in wet applications which should be taken into account with its use. Tensile strength of this material is 12,000 psi (pounds per square inch).

Generally used in electrical or radio work, these fasteners are slightly undercut under the head. That provides the ability to bind stranded wire tightly and prevent fraying. Combination Phillips-Slotted drive styles allow for greater flexibility in choosing a drive tool (either Phillips or standard slotted).

A threaded fastener's size name includes information about the major external diameter, followed by the threads per inch, which indicates if it is coarse or fine. Coarse threads are better when working with brittle materials; they are sturdier and are easier to thread and unthread compared to fine. Coarse threading also allows for thicker coatings and platings.


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Jun 19, 2011 20:41:03

Black Nylon 6/6 Machine Screw, Binding Head, Combination Phillips-Slotted Drive, #2-56, 3/8" Length (Pack of 100)

Black Nylon 6/6 Machine Screw, Binding Head, Combination Phillips-Slotted Drive, #2-56, 3/8" Length (Pack of 100) Reviews



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Black Nylon 6/6 Machine Screw, Binding Head, Combination Phillips-Slotted Drive, #2-56, 3/8" Length (Pack of 100) Feature

  • Machine Screws are often used with nuts or driven into tapped holes
  • Nylon 6/6 is suitable where non-conductivity, corrosion resistance, and cost are important considerations; black color
  • Binding head provides a large surface area for extra surface contact under the head
  • Accommodates both Phillips and Slotted drivers
  • Coarse threads are better for brittle materials, and will assemble and disassemble more quickly than fine threads
Machine Screws, also referred to as Machine Bolts, are often used with nuts or driven into tapped holes. They come in a variety of head types and drive styles, but are generally available in smaller sizes.

Nylon 6/6 is a general purpose thermoplastic with outstanding resistance to organic chemicals, acids and alkalis. Nylon wears well against other surfaces; it is readily machinable and may be milled, turned and cut with conventional machine tools. It does exhibit some dimensional swelling in wet applications which should be taken into account with its use. Tensile strength of this material is 12,000 psi (pounds per square inch).

Generally used in electrical or radio work, these fasteners are slightly undercut under the head. That provides the ability to bind stranded wire tightly and prevent fraying. Combination Phillips-Slotted drive styles allow for greater flexibility in choosing a drive tool (either Phillips or standard slotted).

A threaded fastener's size name includes information about the major external diameter, followed by the threads per inch, which indicates if it is coarse or fine. Coarse threads are better when working with brittle materials; they are sturdier and are easier to thread and unthread compared to fine. Coarse threading also allows for thicker coatings and platings.


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Jun 02, 2011 07:56:04

Precision Stainless Steel 303 Machine Screw, Binding Head, Slotted Drive, NAS, M.5-0.125, 0.080" Length (Pack of 100)

Precision Stainless Steel 303 Machine Screw, Binding Head, Slotted Drive, NAS, M.5-0.125, 0.080" Length (Pack of 100) Reviews



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Precision Stainless Steel 303 Machine Screw, Binding Head, Slotted Drive, NAS, M.5-0.125, 0.080" Length (Pack of 100) Feature

  • Machined, Precision, Instrument quality machine screws, manufactured to National Aerospace Standards
  • Precision, Burr free
  • Passivated 303 Stainless Steel Material conforms to AMS-5640 Type 1, ASTM-A-582, MIL-S-7720, QQS763C, QQS764B
  • Aerospace Quality
  • Medical Quality
Machine Screws, also referred to as Machine Bolts, are often used with nuts or driven into tapped holes. They come in a variety of head types and drive styles, but are generally available in smaller sizes.

Stainless steels are used for their corrosion resistance, high-temperature strength, scaling resistance, and low-temperature toughness. These properties account for their extremely wide use in practically every industry. Austenitic Stainless Steels are alloys of iron and carbon that contain between 16% and 30% Chromium, a maximum of 0.15% carbon, along with Nickel (or Manganese), and other alloying elements. The chromium, which helps develop a passive surface oxide film, provides corrosion resistance in stainless steels. Austenitic Stainless Steels are designated by a 3 digit SAE Stainless Steel Grade beginning with the number 3 (e.g. 304, 316).

Stainless Steel 303 contains 0.15% carbon, along with traces of sulfur and phosphorus which makes this a free machining alloy. Free machining refers to the ability to cut and finish the materials without heavy wear on the machining tools. Tensile Strength is 35000 psi (pounds per square inch). Passivation helps prevent corrosion in certain stainless steels by removing surface impurities that can be caused by machining or forming processes. These impurities block the normally occurring formation of a protective oxide coating on the steel.

Binding head provides a large surface area for extra surface contact under the head

A threaded fastener's size name includes information about the major external diameter (in millimeters), followed by the thread pitch (millimeters per thread), which indicates if it is coarse or fine. Fine threads are preferable when working with harder materials or when threading into a thin material. They are also stronger in tension than coarse threads, and generally provide higher shear strengths.


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May 20, 2011 04:44:03

Polypropylene Machine Screw, Binding Head, Slotted Drive, #6-32, 3/16" Length (Pack of 100)

Polypropylene Machine Screw, Binding Head, Slotted Drive, #6-32, 3/16" Length (Pack of 100) Reviews



Other Picture


Polypropylene Machine Screw, Binding Head, Slotted Drive, #6-32, 3/16" Length (Pack of 100) Feature

  • Machine Screws are often used with nuts or driven into tapped holes
  • Polypropylene is suitable for applications where resistance to chemicals and water (including steam) is important
  • Binding head provides a large surface area for extra surface contact under the head
  • Driven by a flat-bladed driver
  • Coarse threads are better for brittle materials, and will assemble and disassemble more quickly than fine threads
Machine Screws, also referred to as Machine Bolts, are often used with nuts or driven into tapped holes. They come in a variety of head types and drive styles, but are generally available in smaller sizes.

Polypropylene is a thermoplastic which is autoclavable (meaning that it can be sterilized using steam), and is non-hydroscopic (it won't absorb water even after extended periods of contact). Polypropylene has excellent chemical resistance to dilute acids, concentrated acids (except oxidizing acids), alkalis, alcohols, detergents, and water. Polypropylene resists aromatic hydrocarbons, chlorinated hydrocarbons, greases, and oils at room temperature. Maximum operating temperature is 212 degrees Fahrenheit. Polypropylene has a low co-efficient of friction and a high dielectric strength (meaning it operates well as an insulator). Polypropylene has approximately half the tensile strength and impact strength of Nylon 6/6. The tensile strength of Polypropylene is 5000 psi (pounds per square inch). Impact Strength, as measured by the Izod impact test method (which measures force required to break material) is 0.5 pounds per foot.

Generally used in electrical or radio work, these fasteners are slightly undercut under the head. That provides the ability to bind stranded wire tightly and prevent fraying. Common applications for slotted screws include woodworking, although the drive style is not designed to be used with power drivers.

A threaded fastener's size name includes information about the major external diameter, followed by the threads per inch, which indicates if it is coarse or fine. Coarse threads are better when working with brittle materials; they are sturdier and are easier to thread and unthread compared to fine. Coarse threading also allows for thicker coatings and platings.


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May 18, 2011 05:31:03