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Screw 3/8-16 x 1 SHCS FH St-Blk (Jar 100)
Manufacturer Resources
Product Specs
- Division:
- Electrical H1
- Pack Type:
- Jar
- Product Group:
- Fasteners
- Sub Division:
- Electrical-E H2
- Department:
- Electrical
- Product Subgroup:
- Screws
Metallics JFSC381 – Frequently Asked Questions
1) What size and thread is the Metallics JFSC381 socket head cap screw?
The Metallics JFSC381 is a 3/8-16 x 1 inch socket head cap screw. The 3/8 is the nominal diameter, 16 is threads per inch (standard UNC coarse for 3/8), and 1 inch is the length under the head. It is steel with a black finish.
2) Is the black finish on these Metallics screws corrosion resistant enough for outdoor use?
No. The JFSC381 is plain steel with a black finish, which is an oxide-type appearance and oil finish, not a plated or galvanized coating. Keep it to dry interior work. For wet locations, exterior strut, or anything exposed to weather, order a zinc-plated or stainless fastener in the same 3/8-16 x 1 size instead.
3) Will a 3/8-16 x 1 inch socket cap screw work in strut channel and beam clamps?
The 3/8-16 thread is the common electrical hardware thread for strut nuts, beam clamps, and threaded rod hangers, so the JFSC381 mates with any 3/8-16 strut channel nut or tapped fitting. Watch the length: at 1 inch total under the head, you get limited thread engagement once you pass through a channel wall plus a fitting. For thicker stack-ups, step up in length.
4) Does the JFSC381 screw need a hex key or a screwdriver?
A hex key (Allen wrench). SHCS means socket head cap screw, so the head takes an internal hex drive, not a Phillips or slotted bit. On a 3/8-16 socket cap screw that is a 5/16 inch hex key.
5) Is this a full thread screw or does it have an unthreaded shank?
Fully threaded. The FH in the description marks it as full thread, so the 3/8-16 thread runs the whole 1 inch length to the head. That matters when you are tapping into a fitting or need maximum engagement in a thin nut, and it rules it out where you specifically want a shoulder bearing in a clearance hole.
How fast can I get the Metallics JFSC381 delivered?
Most orders ship the same day from our distribution partners, with quick delivery throughout the
continental
U.S.
Need it urgently? Contact Us for expedited shipping options.
Can I return it if it doesn’t work for me?
Yes—ZenSupply offers a hassle-free return policy. If the product isn’t the right fit,
reach out to our support team for a return authorization or setup a return by following our return instructions.
Does the Metallics JFSC381 come with a warranty?
Absolutely. The Metallics JFSC381 is backed by a manufacturer’s warranty.
For full warranty terms, check the product documentation or Contact Us.
How do I get technical support or installation help for the Metallics JFSC381?
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