PTFE Machine Screw, Flat Head, Slotted Drive, #10-32, 1/2" Length (Pack of 1) Reviews
PTFE Machine Screw, Flat Head, Slotted Drive, #10-32, 1/2" Length (Pack of 1) Feature
- Machine Screws are often used with nuts or driven into tapped holes
- PTFE is suitable for high temperature environments and for applications that have the potential for surface wear and exposure to water and chemicals
- Flat head style allows fastener to sit flush to the surface
- Driven by a flat-bladed driver
- Fine threads tap better into harder materials and thin walls, and are stronger in tension than coarse threads
PTFE (polytetrafluoroethylene) has similar properties to Teflon, including an extremely low coefficient of friction (it doesn't stick to other materials and it resists surface wear). PTFE also exhibits a useful service life from below -100 degrees Fahrenheit, to temperatures of over 500 degrees Fahrenheit. Its resistance to solvents is also excellent throughout a wide range of temperatures. PTFE has a high dielectric strength (600 volts/millimeter) which makes it a good insulator. PTFE is also very non-hydroscopic, or water resistant, absorbing less than 0.01% of its weight if exposed to water for a 24 hour period. PTFE has below average tensile strength, at 3000 psi (pounds per square inch).
Flat head fasteners are designed to fit flush to the surface when used with countersunk holes. Length is measured from the top of the head. 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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Jun 10, 2011 17:41:32
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