Metallics JSHC834 8-32 x 3/4 in. Socket Head Hex Cap Screws - Alloy Steel Black - Each

It's an 8-32 screw, 3/4 inch long, with 32 threads per inch in a Unified National (UN) thread form. That's the standard machine screw thread, so it mates with an 8-32 tapped hole or a standard 8-32 nut.

That's the main reason to use one. The JSHC834 is internally wrenched through a hex socket in the head, so you don't need wrench swing clearance around the fastener the way you do with an external hex head. The head is 0.262 to 0.27 inch across and 0.159 to 0.164 inch tall, which is what you'd use to size a counterbore or check clearance in a tight bracket or enclosure.

Yes. Alloy steel socket head cap screws run 180,000 psi minimum tensile and 162,000 psi minimum yield, which is above an equivalent-size grade 5 or grade 8 hex head cap screw. Hardness is Rockwell C39. If you're replacing a stripped or sheared machine screw in a vibrating assembly, this is the upgrade.

No. The JSHC834 is not Buy American compliant and not ARRA compliant, and country of origin is listed as multiple. On a job with domestic sourcing requirements you'll need a fastener with a documented domestic origin.

They're made to ASME B18.3-2012, the standard that governs socket head cap screw head and thread geometry. If a drawing calls out a B18.3 socket head cap screw in 8-32, the JSHC834 meets that callout dimensionally.

They come in a jar of 100, and 100 is the order minimum. So you're buying a jar at a time rather than individual pieces, which is the normal way to stock a common 8-32 size on a service truck or in an MRO crib.

Material is black alloy steel with a black finish, no plating or coating called out for corrosion protection. That's fine for indoor panel, equipment, and mechanical work, which is what it's intended for across electrical, plumbing, heating and air conditioning applications. For wet, exterior, or washdown locations choose a plated or stainless fastener instead.

Yes. Cap screws of a length 3D or greater, where D is the nominal diameter, are subject to tensile, yield, elongation and reduction of area testing. At 3/4 inch on a #8 diameter this screw is well past that threshold, so the published 180,000 psi tensile and 162,000 psi yield apply to it rather than to a longer sibling only. Elongation is 10 percent minimum and reduction of area 33 percent minimum on machined specimens.

Yes, the SHC series is offered in other sizes and quantities by request. The JSHC834 covers the 8-32 x 3/4 inch size specifically, so if your assembly needs a shorter or longer grip in the same 8-32 thread, ask for the length you need rather than stacking washers under this one.