You may also like
Screw 3/8-16 x 5/8 SKT S-Scr Cup St- (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 JSS3858 – Frequently Asked Questions
1) What thread size and length is the Metallics JSS3858 socket set screw?
The JSS3858 is a 3/8-16 x 5/8 inch socket set screw. 3/8-16 is the standard UNC coarse thread for that diameter, so it threads into any tapped 3/8-16 hole or set screw collar, and the 5/8 inch length is the overall screw length.
2) Is the JSS3858 a cup point or flat point set screw, and what does that mean for holding a shaft?
Cup point. The JSS3858 socket set screw has a hollowed, sharp-edged cup tip that bites into the shaft or bus it is tightened against, which gives strong resistance to rotation but leaves a mark. If you need to clamp something you intend to reposition or reuse without scarring, a flat or oval point is the better choice; cup point is the usual pick for permanent grounding lugs, collars and clamp bodies.
3) I need a replacement set screw for a 3/8-16 grounding lug or clamp body. Will the JSS3858 work?
If the existing screw measures 3/8-16 and the tapped depth takes a 5/8 inch screw, yes. The JSS3858 matches that thread and length with a cup point, which is the same configuration used in most mechanical grounding lugs and pipe clamps. Pull the old screw and check the thread with a gauge first if the lug is an unknown brand, since a 3/8-24 fine thread will not start in a 3/8-16 hole.
4) What driver do I need for the Metallics JSS3858 set screw?
It is a socket (internal hex) drive screw, so it takes an Allen key or hex bit, not a screwdriver. There is no external head to grip, which is what lets the screw seat flush or below the surface of the tapped hole.
5) Are these steel set screws suitable for outdoor or wet locations?
The JSS3858 is a steel set screw, not stainless, so it is intended for dry indoor use. For exterior, damp or corrosive locations, specify a stainless set screw of the same 3/8-16 x 5/8 size instead.
6) How many Metallics JSS3858 set screws come in a jar, and is that a practical pack for a service truck?
100 screws per jar, and the pack type is a jar rather than a box, so it stays closed in a truck bin or on a shop shelf without spilling. For electrical contractors and MRO stockrooms replacing set screws in lugs, clamps and collars, the jar of 100 is a stocking quantity rather than a one-job count.
How fast can I get the Metallics JSS3858 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 JSS3858 come with a warranty?
Absolutely. The Metallics JSS3858 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 JSS3858?
You can call, text, or email our expert support team for fast answers. We’re here to help with
product
selection,
installation tips, and troubleshooting. Contact Us
Why buy the Metallics JSS3858 from ZenSupply?
ZenSupply makes it easy to get the commercial door hardware you need—fast shipping, expert support,
and
rewards on
every order.
Our team is always ready to help you choose the right product for your project.