Stainless Steel Machine Screw, Pan Head, Star Drive, #0-80, 1/4" Length (Pack of 100) Reviews
Stainless Steel Machine Screw, Pan Head, Star Drive, #0-80, 1/4" 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
- Pan head allows for higher tightening torques
- Star Drive allows for high torque transfer
- Fine threads tap better into harder materials and thin walls, and are stronger in tension than coarse threads
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.
Pan head fasteners have a low, large cylindrical head with a high rounded top edge for higher tightening torques - these fasteners are often recommended to replace older head styles such as round, binding, or truss-head where possible. Star Drives, also known as Torx Drives, feature a six-pointed star-shaped drive which allows higher torque transfer from the driver to the bit.
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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Aug 08, 2011 10:47:04
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