Metallics TRM84M 8-32 x 1/2 in...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$50.36
$0.36
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Metallics TRM84M 8-32 x 1/2 in. Round Head Tri-Drive Machine Screws - Steel Zinc - Each

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Model: TRM84M

In Stock (leaves warehouse same day if ordered before 3pm ET)

$50.36
$0.36
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8-32 x 1/2 in. Round Head Tri-Drive Machine Screws - Steel Zinc - 1000qty

  • Features

    • Round head with slotted, Phillips and square Drive
    • 8-32 Diameter, 1/2" Length
    • Steel Zinc Material
    • Made in the USA

Manufacturer Resources

Product Specs

Minimum Purchase:
1000 units
Division:
Electrical H1
Fastener Head Type:
Round
Product Group:
Fasteners
Sub Division:
Electrical-E H2
Department:
Electrical
Product Subgroup:
Screws
Product Material:
Steel Zinc

Metallics TRM84M – Frequently Asked Questions

1) What driver do I need for Metallics TRM84M tri-drive machine screws?
Any of three. The round head on the TRM84M is slotted, Phillips, and square drive all in one, so a flat blade, a #2 Phillips, or a square bit will all seat it. That is the point of a tri-drive on electrical work: whatever is already on your belt or in the panel kit will turn it.
2) Will an 8-32 x 1/2 in. machine screw thread into standard electrical box and device ears?
Yes. 8-32 is the standard machine thread used for device mounting screws, cover plates, and box ears in North American electrical work, and the TRM84M is 8-32 with a 1/2 inch length, which is the common length for pulling a device up to the box ears.
3) Is 1/2 inch long enough, or do I need a longer 8-32 screw?
A 1/2 inch 8-32 works when the device or plate sits tight to the box ear. If the box is recessed in the wall, or you are stacking a mud ring, a plaster ring, or a thick plate, 1/2 inch can run out of thread before the device pulls up square, and you want a longer 8-32 instead. The TRM84M is a fixed 1/2 inch length.
4) Are Metallics TRM84M screws okay for damp or outdoor locations?
These are steel with a zinc plating, which is a mild indoor corrosion coating. It handles dry interior panels, boxes, and fixtures. For wet locations, coastal exposure, or anywhere washdown chemicals reach the fastener, go to a stainless 8-32 instead; zinc plated steel will eventually bloom and seize.
5) What is the difference between a round head and a flat head 8-32 machine screw for this job?
The TRM84M has a round head, which sits proud on the surface and bears on a flat face. A flat head needs a countersunk or chamfered hole to sit flush. If the part you are fastening is punched with a countersink, round head will not pull down properly and you want flat head; for plain punched sheet metal and box ears, round head is correct.
6) Are these machine screws self-tapping, or do I need a tapped hole?
Machine screws, not self-drillers. The TRM84M needs an existing 8-32 tapped hole or a nut. If you are fastening into unthreaded sheet metal with no nut behind it, you need a self-tapping or thread-forming screw rather than this.
7) Are Metallics TRM84M screws made in the USA?
Yes, the TRM84M 8-32 x 1/2 in. round head tri-drive screw is US made, which matters if you are filling a Buy American or domestic-content line on a government, transit, or institutional job.
How fast can I get the Metallics TRM84M 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 TRM84M come with a warranty?
Absolutely. The Metallics TRM84M 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 TRM84M?
You can call, text, or email our expert support team for fast answers. We’re here to help with product selection, installation tips, and troubleshooting. Contact Us
Why buy the Metallics TRM84M from ZenSupply?
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