Metallics JFSC1412 Screw 1/4-20 x 1/2 SHCS FH St-Blk (Jar 100)

The JFSC1412 is a 1/4-20 x 1/2 inch socket head cap screw. The 1/4-20 means a 1/4 inch nominal diameter with 20 threads per inch, which is the standard UNC coarse thread for that diameter, so it mates with any 1/4-20 nut or tapped hole. Shank length under the head is 1/2 inch.

It is steel with a black finish, which is a dry indoor fastener. Black oxide or black-finished steel offers little corrosion protection on its own, so for wet locations, exterior strut, or damp mechanical rooms use a zinc-plated or stainless 1/4-20 cap screw instead. Indoors, in panels, enclosures, and dry equipment mounting, the black steel is fine.

One hundred screws per jar. Metallics packs the JFSC1412 in a jar rather than a loose box, which is what makes it practical to keep on a service truck or in an MRO crib without the screws scattering.

A hex key (Allen) driver, not a screwdriver or a wrench on the head. Socket head cap screws drive from an internal hex socket, which is why they work in counterbored holes and tight spots where there is no room to get a wrench around a hex head. For 1/4-20 socket head cap screws the socket takes a 3/16 inch hex key.

The JFSC1412 gives 1/2 inch of shank under the head, so it suits thin stackups: a single piece of sheet metal or a bracket into a tapped hole or a 1/4-20 channel nut. Once your combined material thickness plus nut engagement passes about 1/2 inch you will run out of thread, so step up to a longer 1/4-20 cap screw. Remember the head length does not count toward grip with a socket head screw seated flush in a counterbore.

Yes. Because the thread is 1/4-20, the screw threads into any 1/4-20 spring nut, channel nut, or tapped hole used for conduit straps, pipe clamps, and enclosure mounting. Metallics catalogues it as an electrical fastener, and at 1/2 inch it is on the short side, so it is best where the clamp or strap sits directly against the channel with no spacer behind it.

Both thread the same, so either one fits a 1/4-20 hole. The difference is the head and how you drive it. The JFSC1412 socket head cap screw has a cylindrical head driven by a hex key from above, so it can sit down in a counterbore and be run where there is no clearance for a wrench swing. A hex head bolt needs side clearance for a socket or wrench but lets you apply torque with common hand tools. For panel interiors, machined brackets, and tight enclosures, the socket head is the one to order.

Order Metallics JFSC1412. That is the part number for the 1/4-20 x 1/2 inch black steel socket head cap screw in the 100 piece jar, and it is the only configuration that part number covers, so there is no size or finish to specify beyond it.