Metallics JSHC634SS 6-32 x 3/4 in. Socket Head Hex Cap Screws - 18-8 Stainless - Each

It's a 6-32 UNC thread, 32 threads per inch, so it threads into any standard 6-32 tapped hole or 6-32 nut. That's the same thread used on most electrical device boxes, enclosure covers and panel hardware. Length is 3/4 inch under the head.

Head width runs 0.218 to 0.226 inch and head height 0.134 to 0.138 inch. Size the counterbore or clearance pocket off those numbers if the head has to sit flush or under a cover plate. The screw is made to ASME B18.3-2012 dimensional standard, so it interchanges with any other B18.3 6-32 socket head cap screw.

18-8 stainless at this grade is a corrosion-resistance choice, not a high-strength one: 80,000 psi minimum tensile, 30,000 psi minimum yield, hardness Rockwell B80. That's well below an alloy steel socket cap screw. Use it where moisture, washdown or outdoor exposure is the concern. If the joint is load-bearing and needs high clamp force, specify an alloy steel socket head cap screw instead.

They ship in a jar with an order minimum of 100 count. There's no single-piece break on it, so plan on the 100-piece jar as the buying unit.

The JSHC634SS is flagged compliant for both Buy American and ARRA. Country of origin is listed as multiple, so if your spec requires a single named source of manufacture on the submittal, confirm the origin on the lot you receive.

Yes. 18-8 stainless retains its mechanical and performance capability at temperatures above ambient, which is why it gets used around fixtures, heaters and machinery housings where a plated carbon steel screw would lose plating and seize.

Yes. Cap screws of a length 3D or greater, where D is the nominal diameter, are subject to tensile strength, yield strength, elongation and reduction of area testing. At 6-32 the nominal diameter is 0.138 inch, so 3/4 inch is well past 3D. Elongation is 10 percent minimum and reduction of area 33 percent minimum on machined specimens.