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Screw 12-24 x 3/8 RH PH MS 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 JRMP178 – Frequently Asked Questions
1) What size and thread are the Metallics JRMP178 machine screws?
The JRMP178 is a 12-24 x 3/8 inch round head Phillips machine screw, so it takes a 12-24 tapped hole, which is the standard thread used on electrical box and device mounting holes. The 3/8 inch length keeps it short for through-tapped box ears and strap holes.
2) Will a 12-24 round head Phillips screw work for mounting a device or cover to a steel outlet box?
Yes. Steel outlet and switch boxes are tapped 12-24 at the device ears and ground screw hole, and the JRMP178 is a 12-24 machine screw. At 3/8 inch it is long enough to pick up the tapped ear without bottoming out behind it. If you need to reach through a thick plaster ring or a stack of mud rings, order a longer 12-24 instead.
3) Are these zinc plated steel screws, and can I use them outdoors?
Steel with zinc plating (the "MS St-Zn" in the JRMP178 description). Zinc plating handles dry indoor and protected locations fine. For wet, exterior, or corrosive environments, specify stainless steel instead; zinc plated steel will eventually corrode in standing moisture.
4) How many screws come in a jar of Metallics JRMP178?
100 screws per jar. It ships as a jar pack, which is the usual bulk format for an electrician's van or a shop bench bin rather than a carded retail count.
5) Is a round head Phillips screw the right choice, or should I use a flat head?
Round head sits on top of the surface with a domed profile, so use it where the hole is not countersunk, which covers most box ears, straps, and brackets. If the part has a chamfered or countersunk hole and the fastener needs to sit flush, such as under a finished cover plate, use a flat head machine screw of the same 12-24 x 3/8 size instead.
6) What is the Metallics part number for the 12-24 x 3/8 zinc plated Phillips machine screw?
JRMP178. That is the Metallics manufacturer part number for the 12-24 x 3/8 inch round head Phillips zinc plated steel machine screw in the 100 count jar.
How fast can I get the Metallics JRMP178 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 JRMP178 come with a warranty?
Absolutely. The Metallics JRMP178 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 JRMP178?
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