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Screw 3/8-16 x 1 RH PH MS USA St-Zn (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 JRMP66D – Frequently Asked Questions
1) What size and thread is the Metallics JRMP66D machine screw?
It's a 3/8-16 x 1 inch machine screw: 3/8 inch diameter, 16 threads per inch (the standard coarse pitch for 3/8), with a 1 inch length. Thread it into a tapped 3/8-16 hole or run it with a matching 3/8-16 nut. With only 1 inch of length, usable grip is short once you account for the nut or tapped depth, so stack up your material thickness before ordering.
2) Is a machine screw like the JRMP66D the right fastener for sheet metal, or do I need a self-tapping screw?
A machine screw has a uniform machine thread and no cutting point, so it needs an existing tapped hole or a nut. It will not form its own thread in sheet metal. If you are fastening into unthreaded sheet, use a self-drilling or sheet metal screw; if you are bolting into a threaded 3/8-16 boss, strut nut, or hardware with a 3/8-16 tapped hole, the 3/8-16 x 1 machine screw is the correct part.
3) What head style and driver does the JRMP66D screw use?
Round head with a Phillips recess. The domed round head seats on the surface rather than countersinking, so it does not need a chamfered or countersunk hole, and it drives with a standard Phillips bit. If your panel or box requires a flush face, a round head is the wrong choice and you want a flat head machine screw instead.
4) Are these machine screws plated for corrosion resistance, and can I use them outdoors?
The JRMP66D is steel with a zinc plating. Zinc plated steel is intended for dry indoor service, such as panel, enclosure, and box work. For damp, exterior, or washdown locations, zinc will eventually corrode and a stainless fastener is the better call.
5) How many screws come in a jar of Metallics JRMP66D?
Each jar holds 100 of the 3/8-16 x 1 inch screws, packed in a jar rather than a loose box, which keeps the count intact on a service truck or in a shop drawer. Pack Type is listed as Jar.
How fast can I get the Metallics JRMP66D 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 JRMP66D come with a warranty?
Absolutely. The Metallics JRMP66D 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 JRMP66D?
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selection,
installation tips, and troubleshooting. Contact Us
Why buy the Metallics JRMP66D from ZenSupply?
ZenSupply makes it easy to get the commercial door hardware you need—fast shipping, expert support,
and
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every order.
Our team is always ready to help you choose the right product for your project.