Metallics JRMB79 12-24 x 3/4 i...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$192.86
Metallics JRMB79 12-24 x 3/4 in. Round Head Slotted Machine Screws - Brass - 100qty

Metallics JRMB79 12-24 x 3/4 in. Round Head Slotted Machine Screws - Brass - Each

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Model: JRMB79
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In Stock (leaves warehouse same day if ordered before 3pm ET)

$192.86
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12-24 x 3/4 in. Round Head Slotted Machine Screws - Brass - 100qty

  • Additional Notes

    • Other sizes and quantities available by request | Tensile strength values for stainless screws are offered as approximations only; there is no single standard for the performance requirements of stainless machine screws.

  • Features

    • Round head with slotted Drive
    • Brass Material
    • 12-24 Diameter, 3/4" Length

Manufacturer Resources

Product Specs

Minimum Purchase:
100 units
Arra Compliant:
C
Buy American Compliant:
C
Dimensional Standard:
ASME B18.6.3
Division:
Electrical H1
Drive Type:
Slotted
Fastener Head Height:
0.139 - 0.153 in.
Fastener Head Type:
Round
Fastener Head Width:
0.382 - 0.408 in.
Fastener Length:
4-Mar
Language Code:
EN
Neurspe:
https://ideadigitalasset.com/DAMRoot/Original/10035/11237_ID-SPE-v1-ID-SPE-v1-Round_Head_Machine_Screw.pdf
Order Minimum Imperial:
100
Order Minimum Uom Imperial:
CT
Pack Type:
Jar
Product Group:
Fasteners
Product Height:
2.15 in
Product Length:
3 in
Product Weight:
0.77 lbs
Product Width:
3 in
Recess Penetration Gaging Depth:
0.082 - 0.108
Slot Depth:
0.073 - 0.096
Slot Width:
0.056 - 0.067
Sub Division:
Electrical-E H2
Thread Per Inch:
24
Thread Standard:
ANSI/ASME B1.1
Department:
Electrical
Product Subgroup:
Screws
Product Type:
Machine Screw
Type2:
Machine Screw
Series:
JRMB
Product Details:
Machine Screw
Product Material:
Brass

Metallics JRMB79 – Frequently Asked Questions

1) Will a 12-24 machine screw thread into a standard electrical box or device ring?
Yes. The Metallics JRMB79 is a 12-24 machine screw, which is the thread used for outlet box and device ring mounting holes in US electrical work. Threads are cut to ANSI/ASME B1.1 at 24 threads per inch, so they engage tapped box ears, mud rings and fixture straps without chasing the hole.
2) Are these Metallics brass machine screws acceptable on a federally funded job?
The JRMB79 brass machine screws are flagged compliant for both ARRA and Buy American requirements, which is what a government, school district or transit procurement officer needs on the submittal. Country of origin is recorded as multiple.
3) Why pick brass machine screws instead of steel or stainless for electrical work?
Brass is the material here, and electricians use it where corrosion resistance and conductivity matter, typically bonding and grounding connections, damp locations, and fixture work where a plated steel screw would rust and seize. It is softer than steel, so if the job needs pull-out strength on a structural bracket, a steel or stainless screw is the better call.
4) How much does a round head screw stick up off the surface?
Head height on the JRMB79 round head screw runs 0.139 to 0.153 in., with a head width of 0.382 to 0.408 in. The domed head sits fully on top of the surface, so if you need the head flush with a cover plate or a bracket face, you want a flat head countersunk screw instead of this one.
5) What screwdriver tip fits these, and will a #2 Phillips work?
Slotted drive only, so a flat blade is required, no Phillips. The slot measures 0.056 to 0.067 in. wide and 0.073 to 0.096 in. deep, which suits a small cabinet-tip flat driver. Brass cams out and burrs easily, so match the blade to the slot width rather than driving with an oversize tip or an impact driver.
6) Do these brass screws meet a recognized dimensional spec for submittals?
Yes. Head, slot and body dimensions follow ASME B18.6.3, the US standard for slotted and recessed head machine screws, and the thread conforms to ANSI/ASME B1.1. That pairing is what lets a spec writer accept them in place of a named brand on an electrical or MRO submittal.
7) How are these sold, loose or in a package, and is there a minimum order?
They ship in a jar, with a minimum order quantity of 100 count. Jar packaging is what service techs keep on the van or in a shop bin, rather than a bulk carton you have to decant.
8) Can I order the same brass round head slotted screw in a different length or thread size?
The JRMB series covers other sizes and quantities by request beyond the 12-24 x 3/4 in. brass round head slotted screw, so a facility standardizing on brass hardware across boxes, plates and fixtures can keep the same head style and material and just change the length or diameter.
How fast can I get the Metallics JRMB79 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 JRMB79 come with a warranty?
Absolutely. The Metallics JRMB79 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 JRMB79?
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 JRMB79 from ZenSupply?
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