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- Round head with slotted, Phillips and square Drive
- Made in the USA
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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 TRM113M – Frequently Asked Questions
1) Will a 10-32 x 2 inch machine screw thread into a standard electrical box or mounting strap?
Yes. 10-32 is the standard machine screw thread used for device mounting and grounding in steel outlet boxes, straps and enclosures, and the TRM113M is a 10-32 thread. The 2 inch length is the long one, meant for pulling a device through thick plaster rings, extension rings or deep mud rings rather than a flush box face.
2) What drivers fit the Metallics TRM113M tri-drive machine screw?
The TRM113M head takes three drivers: a flat blade for the slot, a Phillips bit, or a square (Robertson) bit. That is what tri-drive means here, and it is useful when you are up a ladder in a panel and only have one bit on you. The square recess gives the best bit retention of the three if you are driving a lot of them with a cordless.
3) Is a 2 inch screw too long for mounting a receptacle in a standard box?
For a flush device in a shallow box, yes, it is longer than you need, and the excess thread will bottom out or stick into the wiring space. The 2 inch TRM113M is for build-out situations: stacked extension rings, thick tile or stone finishes, deep mud rings on a masonry wall. For a normal flush mount, go back to a shorter 10-32 machine screw in the same thread.
4) Is the Metallics TRM113M screw okay to use outdoors or in a damp location?
It is steel with a zinc plating, which handles dry indoor and normally damp interior conditions. Zinc plated steel is not a corrosion-resistant finish for coastal, wet or chemically aggressive exposure, so for exterior or wash-down work specify a stainless fastener instead.
5) Does the round head on this Metallics machine screw sit flush, or does it stand proud?
It stands proud. The TRM113M has a round head, which bears on the surface rather than pulling down into a countersink, so it leaves a visible domed head. If the drawing calls for a flush face you want a flat head countersunk screw, not this one. Round head is the usual choice for device straps, covers and bonding points where a raised head is no problem.
6) Can I use a 10-32 machine screw as a grounding screw?
10-32 is the thread the grounding screw holes in steel boxes and enclosures are tapped for, so the thread matches. Bear in mind that a dedicated green grounding screw is normally specified by color for identification; the TRM113M is a plain zinc plated steel machine screw, so use it for general device and strap mounting and keep an identified green screw where the ground connection needs to be marked.
7) Are Metallics TRM113M machine screws made in the USA?
Yes, the TRM113M is US made, which matters if you are on a government, institutional or transit job carrying domestic sourcing language in the spec.
How fast can I get the Metallics TRM113M delivered?
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Can I return it if it doesn’t work for me?
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Does the Metallics TRM113M come with a warranty?
Absolutely. The Metallics TRM113M 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 TRM113M?
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