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Screw 8-32 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 JFMB85 – Frequently Asked Questions
1) Will an 8-32 x 3/4 machine screw work for mounting a device or cover plate in a standard electrical box?
8-32 is the standard thread used for switch, receptacle and cover plate mounting in outlet and device boxes, so the Metallics JFMB85 screw threads into those factory-tapped holes. At 3/4 inch of length it gives extra reach for mud rings, box extenders, or plaster that sits proud of the box, where the short screw that came with the device runs out of thread.
2) Can I use a machine screw like this to fasten into drywall or wood?
No. A machine screw has a uniform machine thread with a blunt end, so it needs a tapped hole or a nut to hold. It will not cut its own thread in wood, drywall or sheet metal. For a tapped device box, mud ring or threaded bracket, the 8-32 x 3/4 brass screw is right; for substrate anchoring you want a sheet metal screw, wood screw or a drywall anchor instead.
3) What head and driver does the Metallics JFMB85 screw use?
Flat head, slotted drive. The flat head seats flush when the hole is countersunk, so it sits level with a plate or trim face rather than standing above it, and it drives with a standard flat blade screwdriver. No Phillips or square bit needed.
4) Is the JFMB85 screw brass or plated steel?
Brass. That matters on two counts: brass will not rust in damp or outdoor-rated boxes, and it stays non-magnetic, which some low-voltage and instrumentation work calls for. It is softer than steel, so drive it with hand tools and do not run it in with an impact driver.
5) Is 3/4 inch too long for a standard cover plate screw?
For a plate mounted flat to a flush box, 3/4 inch is longer than needed and the excess simply runs past the tapped ear inside the box, which is usually harmless but can bottom out against wiring or the back of the box in a shallow box. Where the ear is set back behind thick plaster, tile or a box extension, that extra length is the reason to buy it. Keep both this and a shorter 8-32 on hand if you service mixed construction.
6) How many screws come in a jar of Metallics JFMB85?
100 screws per jar. The jar pack is what service techs and MRO stockrooms keep on the truck or on the shelf for device and plate work, since you are pulling a handful at a time rather than ordering per piece.
7) What is the Metallics part number for the 8-32 x 3/4 brass flat head slotted machine screw?
JFMB85 is the Metallics number to order. Spell it out on a purchase order along with the description, 8-32 x 3/4 flat head slotted machine screw in brass, since the adjacent sizes in the same family differ only by length.
How fast can I get the Metallics JFMB85 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 JFMB85 come with a warranty?
Absolutely. The Metallics JFMB85 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 JFMB85?
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