Metallics JRMB83 8-32 x 1/2 in...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$50.57
$0.57
Metallics JRMB83 8-32 x 1/2 in. Round Head Slotted Machine Screws - Brass - 100qty

Metallics JRMB83 8-32 x 1/2 in. Round Head Slotted Machine Screws - Brass - Each

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Model: JRMB83
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$50.57
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8-32 x 1/2 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

    • Brass Material
    • Round head with slotted Drive
    • 8-32 Diameter, 1/2" Length

Manufacturer Resources

Product Specs

Minimum Purchase:
100 units
Arra Compliant:
N
Buy American Compliant:
No
Dimensional Standard:
ASME B18.6.3
Division:
Electrical H1
Drive Type:
Slotted
Fastener Head Height:
0.107 - 0.12 in.
Fastener Head Type:
Round
Fastener Head Width:
0.287 - 0.309 in.
Fastener Length:
2-Jan
Field Application:
Electrical, Plumbing, Heating and Air Conditioning Industries
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:
JR
Pack Type:
Jar
Product Group:
Fasteners
Product Height:
2.15 in
Product Length:
3 in
Product Weight:
0.43 lbs
Product Width:
3 in
Recess Penetration Gaging Depth:
0.064 - 0.090
Slot Depth:
0.058 - 0.077
Slot Width:
0.045 - 0.054
Sub Division:
Electrical-E H2
Thread Per Inch:
32
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 JRMB83 – Frequently Asked Questions

1) Will an 8-32 brass machine screw thread into a standard device box or switch plate?
Yes. The Metallics JRMB83 is an 8-32 thread, 32 threads per inch, cut to the ANSI/ASME B1.1 thread standard, which is the same 8-32 machine thread used for device mounting holes in outlet and switch boxes and for cover plates. At 1/2 inch long it gives enough engagement for a device yoke or plate without bottoming out in a shallow tapped hole.
2) Can I use these on a federally funded job with Buy American requirements?
No. The JRMB83 brass machine screws are not Buy American compliant and are not ARRA compliant, with country of origin listed as multiple. For a job carrying domestic sourcing language you need a domestically produced fastener instead.
3) Why choose brass machine screws instead of steel or stainless for electrical work?
Brass is non-magnetic, corrosion resistant, and conductive, which is why it gets specified for grounding screws, bonding points, and damp-location boxes where a plated steel screw would rust. The JRMB83 is solid brass throughout. Keep in mind brass is softer than steel, so a slotted brass head will cam out or deform if you drive it with an impact driver instead of a hand screwdriver.
4) How much does the round head stand up off the surface, and will it sit flush?
It won't sit flush. A round head is a domed head that seats on top of the surface, projecting 0.107 to 0.12 inch above it, with a head diameter of 0.287 to 0.309 inch. If you need the screw flush or below the surface you want a flat head in a countersunk hole instead.
5) How are these Metallics brass machine screws packaged and what is the minimum order?
They ship in a jar of 100 pieces, which is the order minimum. The jar measures 3 in by 3 in by 2.15 in and weighs 0.43 lbs, so it drops into a van bin or a service cart drawer without repacking.
6) Do these screws meet a dimensional spec I can put on a submittal?
Yes. The JRMB83 is made to ASME B18.6.3, the dimensional standard for slotted and recessed head machine screws, and the threads to ANSI/ASME B1.1. Those two citations cover head geometry, slot dimensions, and thread form for a spec sheet or submittal package.
7) Are brass round head machine screws only for electrical, or can plumbers and HVAC techs use them?
Field application covers the electrical, plumbing, heating and air conditioning trades. Same screw in all three: 8-32 machine thread, brass body for corrosion resistance around moisture, round head bearing on the surface. Common uses are strapping, nameplates, clamp bodies, and bonding connections.
8) Does Metallics make this brass screw in other lengths or diameters?
The JRMB series covers other sizes and quantities by request. The JRMB83 itself is fixed at 8-32 x 1/2 inch, so if you need a longer screw for thicker stock or a 6-32 or 10-24 thread, ask for the alternate JRMB size rather than assuming this model number covers it.
How fast can I get the Metallics JRMB83 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 JRMB83 come with a warranty?
Absolutely. The Metallics JRMB83 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 JRMB83?
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 JRMB83 from ZenSupply?
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