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Screw 3/8-16 x 2 SHCS 316 SS (Jar 100)
Manufacturer Resources
Product Specs
- Division:
- Electrical H1
- Pack Type:
- Jar
- Product Family:
- Electrical Supplies
- Product Group:
- Fasteners
- Sub Division:
- Electrical-E H2
- Department:
- Electrical
- Product Subgroup:
- Screws
Metallics JSHC382SS316 – Frequently Asked Questions
1) What size and thread is the Metallics JSHC382SS316 socket head cap screw?
It's a 3/8-16 x 2 inch socket head cap screw. The 3/8-16 means a 3/8 inch nominal diameter with 16 threads per inch, which is the standard coarse (UNC) pitch for that diameter, and the 2 inches is the shank length under the head. You'll drive it with a 5/16 inch hex key.
2) Is this a 304 or a 316 stainless screw, and does it hold up outdoors or near salt water?
The JSHC382SS316 is 316 stainless, not 304. The 316 alloy adds molybdenum, which is why it's the grade specified for coastal, marine, wastewater, and chemically aggressive environments where 304 will pit. If you're fastening outdoor electrical enclosures, strut, or equipment near salt air, 316 is the one to use.
3) Do nuts or washers come with these 3/8-16 stainless cap screws?
No. The jar holds the 3/8-16 x 2 inch socket head cap screws only. If you're through-bolting you'll need to order matching 3/8-16 hex nuts and 3/8 flat or lock washers separately, and they should be 316 stainless too. Mixing a 304 nut onto a 316 screw in a marine or wash-down location gives you a corrosion point at the joint.
4) How many screws come in a jar of Metallics JSHC382SS316?
100 screws per jar, and the jar is the pack format, not a loose bulk box. Sizing a job: one jar covers 100 fastening points at 3/8-16 x 2 inch. If your assembly uses two screws per bracket, that's 50 brackets.
5) When should I use a socket head cap screw instead of a hex bolt on electrical equipment?
Socket head cap screws are the choice when clearance is tight or the head needs to sit in a counterbore. The cylindrical head is smaller in diameter than a hex head of the same 3/8-16 thread, so it fits into recesses and close to walls where a wrench won't swing, and it drives with a hex key straight down the axis. Use a hex bolt instead when you want to torque it with an impact or open-end wrench, or when you need a wider bearing surface under the head.
6) What size hole should I drill for a 3/8-16 stainless socket head cap screw?
For a clearance hole, 13/32 inch is the standard close fit and 7/16 inch the free fit for a 3/8 inch fastener. If you're tapping the hole instead, drill 5/16 inch for 3/8-16 threads. Stainless work-hardens, so run the drill and tap slow with cutting fluid.
7) Do stainless screws like this gall when you tighten them?
They can. 316 stainless against 316 stainless is prone to thread galling if you run the nut down fast with a driver, and a galled fastener seizes solid before it's torqued. Run it on slowly, and use an anti-seize on the threads when you're assembling stainless to stainless. This is a handling issue with the alloy, not a defect in the screw.
How fast can I get the Metallics JSHC382SS316 delivered?
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Does the Metallics JSHC382SS316 come with a warranty?
Absolutely. The Metallics JSHC382SS316 is backed by a manufacturer’s warranty.
For full warranty terms, check the product documentation or Contact Us.
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