Metallics JSHC614 6-32 x 1/4 in. Socket Head Hex Cap Screws - Alloy Steel Black - Each

The Metallics JSHC614 is a 6-32 x 1/4 inch socket head cap screw, internally wrenched with a hex drive, so it is turned with a hex key seated in the socket rather than a wrench on the outside of the head. That is the practical reason to use it: because the driving surface is inside the head, it needs less clearance around the fastener or a smaller counterbore than a hex head cap screw, while delivering greater tensile strength than Grade 5 or Grade 8 hex head screws of the same size.

Threads are 6-32 UN, 32 threads per inch, so it mates with any hole tapped 6-32 (a standard #6 machine screw thread used throughout electrical device and enclosure work). Usable length is 1/4 inch, which is short, so your tapped depth plus any material you are clamping has to fall inside that. If your plate or bracket stack is thicker, you need a longer screw in the same thread.

Rated at 180,000 psi minimum tensile and 162,000 psi minimum yield, with a hardness of Rockwell C39. Elongation is 10 percent minimum and reduction of area 33 percent minimum on machined specimens. In short, this is alloy steel socket head cap screw strength, above what a Grade 5 or Grade 8 hex head screw of the same size gives you.

They ship in a jar of 100, and 100 is the order minimum, so you are buying a jar rather than loose pieces. Jar weight is listed at 0.27 lbs. Other sizes and quantities can be had by request.

Material is alloy steel with a black finish, which is a plain, non-plated appearance typical of alloy socket head cap screws and best kept to dry indoor work: panel interiors, enclosure assembly, bracket and strut connections. For wet, exterior, or washdown locations choose a plated or stainless fastener instead rather than relying on the black finish for corrosion protection.

No. The JSHC614 socket head cap screws are not Buy American compliant and are not ARRA compliant, with country of origin listed as multiple. If your job carries a domestic sourcing clause, these will not satisfy it.

They are catalogued for electrical, plumbing, heating and air conditioning work. In practice that means enclosure and panel assembly, mounting brackets and device hardware, strut and equipment fastening, and MRO repair bins where a #6 machine thread is the common size on equipment covers and terminal hardware.

Watch the length. Cap screws are subject to tensile strength, yield strength, elongation and reduction of area testing only at a length of 3D or greater, where D is the nominal screw diameter. At 1/4 inch long on a #6 thread this screw is near that threshold, so the published 180,000 psi tensile and 162,000 psi yield figures are the material ratings for the SHC alloy steel line. If your spec requires certified test values on the finished fastener, order a longer length in the same series.