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Manufacturer Resources
Product Specs
- Division:
- Electrical H1
- Pack Type:
- Jar
- Product Group:
- Fasteners
- Sub Division:
- Electrical-E H2
- Department:
- Electrical
- Product Subgroup:
- Screws
Metallics JFSC51634 – Frequently Asked Questions
1) What thread size and length is the Metallics JFSC51634 socket head cap screw?
The JFSC51634 is a 5/16-18 x 3/4 inch flat head socket cap screw in black steel. The 5/16-18 is the coarse (UNC) thread pitch, so it mates with any 5/16-18 tapped hole or nut, and the 3/4 inch is the overall length measured including the countersunk head on a flat head screw.
2) Does the JFSC51634 screw sit flush with the surface?
Yes, provided the hole is countersunk. It is a flat head socket cap screw, so the conical head seats into an 82 degree countersink and finishes flush or slightly below the surface. If your hole is a straight clearance hole with no countersink, you want a standard cylindrical socket head cap screw or a button head instead, because the flat head will stand proud and will not clamp properly.
3) How many screws come in a jar of Metallics JFSC51634?
Each jar holds 100 of the 5/16-18 x 3/4 inch black flat head socket cap screws. Metallics packages this one in a jar rather than a box or bag, which is what MRO stockrooms and electrical shops usually want on a bin shelf for a high-turn fastener.
4) What tool drives a 5/16-18 flat head socket cap screw like the JFSC51634?
It drives with a hex key, not a screwdriver. The head is a countersunk socket type, so you need an Allen wrench or hex bit in the socket, which lets you reach full torque in a recessed or tight location where a wrench on a hex head would not fit.
5) Is the black finish on the Metallics JFSC51634 screw suitable for outdoor use?
Treat it as an indoor or dry-location fastener. The JFSC51634 is plain steel with a black finish, which is a decorative and light surface treatment rather than a corrosion barrier like zinc plating or stainless. For wet, exterior, or washdown locations, specify a zinc-plated or stainless 5/16-18 x 3/4 flat head socket cap screw instead.
How fast can I get the Metallics JFSC51634 delivered?
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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 JFSC51634 come with a warranty?
Absolutely. The Metallics JFSC51634 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 JFSC51634?
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