!9# Black Nylon 6/6 Machine Screw, Binding Head, Combination Phillips-Slotted Drive, #4-40, 3/4" Length (Pack of 100)
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Post Date : Jul 23, 2012 23:58:04 |
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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.
- 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
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