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Screw 4-40 x 1/2 PN SL MS BR (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 JSPMB67 – Frequently Asked Questions
1) What size and thread is the Metallics JSPMB67 machine screw?
It's a 4-40 x 1/2 inch machine screw, meaning a #4 diameter with 40 threads per inch and a 1/2 inch length. That thread is the standard mate for 4-40 tapped holes and 4-40 nuts, which is what you'll find on small device plates, pilot lights, and switch and terminal hardware.
2) What head and drive does the JSPMB67 screw use, and will a standard screwdriver work?
Pan head with a slotted drive, so a flat blade screwdriver is all you need. The pan head gives a rounded low profile with a flat bearing surface, so it sits on top of the material rather than countersinking into it. If your part is counterbored for a flush finish, you want a flat head instead.
3) Are these 4-40 screws brass or plated steel?
Brass machine screws. Brass is non-magnetic and corrosion resistant, which is why it gets specified for electrical device and instrument work. It's also softer than steel, so don't drive these with an impact driver or you'll twist the head off.
4) How many screws come in a jar of Metallics JSPMB67?
100 screws per jar. The jar pack is the standard bench or van stock format for small fasteners like this, so you can keep a service stock of 4-40 brass screws on the truck without them loose in a tray.
5) Can I use these brass machine screws for electrical device and panel work?
That's the intended use. The JSPMB67 is stocked as an electrical fastener, and 4-40 is the common thread on small electrical device hardware, pilot lights, and terminal blocks. Brass avoids the rust problem you get with plain steel screws in damp or outdoor enclosures.
6) What is the part number to order 4-40 x 1/2 brass pan head slotted machine screws from Metallics?
Metallics JSPMB67 is the number. One part number covers the item, supplied as a jar of 100.
7) Do these screws come with nuts?
No, the jar holds 100 screws only. If you're fastening through an untapped hole you'll need to order 4-40 brass machine screw nuts separately, and washers if the material is soft or slotted.
How fast can I get the Metallics JSPMB67 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 JSPMB67 come with a warranty?
Absolutely. The Metallics JSPMB67 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 JSPMB67?
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