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Screw 10-32 x 3/4 FH 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 JFMB48 – Frequently Asked Questions
1) Will a 10-32 brass machine screw thread into the tapped holes in a steel outlet box?
Yes, if the hole is tapped 10-32, which is the standard machine thread electrical boxes use for ground screws and fixture mounting holes. The JFMB48 is a true 10-32 machine screw, so it mates with any 10-32 tapped hole or 10-32 nut. If the box hole is 8-32 or 6-32, as many device and cover screws are, this one will not start.
2) Is the JFMB48 screw solid brass or brass plated?
It is specified as brass (BR) machine screw stock. Brass is non-magnetic and corrosion resistant, which is why it is the common choice for grounding and bonding connections and for trim where a steel screw would rust or show.
3) Do I need a flat head screw or a round head for a cover plate or canopy?
Flat head is what the JFMB48 gives you, and it only sits right in a countersunk or chamfered hole, where the head finishes flush with the surface. If the hole in your plate, canopy or bracket is a plain punched hole with no countersink, a round, pan or oval head is the correct pick instead, because a flat head will stand proud and rock on the edge of the hole.
4) What part number do I order for Metallics 10-32 x 3/4 brass flat head slotted screws, and how do they come packed?
Order Metallics JFMB48. It ships as a jar of 100 screws, which is the count electricians and maintenance shops usually keep on the truck or on the shelf for ground and fixture screws rather than buying loose.
5) Can I use these brass screws for a ground connection?
Brass is the usual material for bonding and grounding screws because it resists corrosion and keeps a clean low resistance contact, and 10-32 is the thread grounding holes in boxes and enclosures are tapped for. The JFMB48 meets both of those in a 3/4 inch length. Note it is a plain flat head slotted screw, not a green-coloured hex ground screw with a wire-retaining head, so if your inspector expects the identified green ground screw, use that part instead.
6) How much material can a 3/4 inch long 10-32 screw go through?
The 3/4 inch is the usable length, and on a flat head screw that length is measured from the top of the head because the head sinks into the countersink. Subtract your plate or bracket thickness to see what is left for thread engagement in the tapped hole or nut. For a thin device plate you will have most of the 3/4 inch available; through a thick bracket plus a shallow tapped boss, step up to a longer screw instead.
7) Does the JFMB48 come with nuts or washers?
No. It is a screw-only pack, 100 brass 10-32 x 3/4 flat head slotted screws in a jar. If you are fastening through an untapped hole, order 10-32 machine screw nuts and any washers separately.
How fast can I get the Metallics JFMB48 delivered?
Most orders ship the same day from our distribution partners, with quick delivery throughout the
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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 JFMB48 come with a warranty?
Absolutely. The Metallics JFMB48 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 JFMB48?
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