Metallics JRMB22 1/4-20 x 3/8 ...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$192.86
Metallics JRMB22 1/4-20 x 3/8 in. Round Head Slotted Machine Screws - Brass - 100qty

Metallics JRMB22 1/4-20 x 3/8 in. Round Head Slotted Machine Screws - Brass - Each

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Model: JRMB22
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In Stock (leaves warehouse same day if ordered before 3pm ET)

$192.86
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1/4-20 x 3/8 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
    • 1/4-20 Diameter, 3/8" Length
    • Brass Material

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:
0.16 - 0.175 in.
Fastener Head Type:
Round
Fastener Head Width:
0.443 - 0.472 in.
Fastener Length:
8-Mar
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:
0.9 lbs
Product Width:
3 in
Recess Penetration Gaging Depth:
0.104 - 0.130
Slot Depth:
0.082 - 0.109
Slot Width:
0.064 - 0.075
Sub Division:
Electrical-E H2
Thread Per Inch:
20
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 JRMB22 – Frequently Asked Questions

1) Will a 1/4-20 brass machine screw thread into a standard 1/4-20 tapped hole or nut?
Yes. The Metallics JRMB22 is cut to the ANSI/ASME B1.1 thread standard at 20 threads per inch, so it mates with any standard 1/4-20 UNC tapped hole, nut, or coupling. Thread engagement is limited by the 3/8 inch length, so for anything thicker than about a quarter inch of material you want a longer screw.
2) Are these brass machine screws Buy American or ARRA compliant for a government job?
No. The JRMB22 is not Buy American compliant and is not ARRA compliant, and country of origin is listed as multiple. If your project carries domestic sourcing requirements, this is not the fastener to specify.
3) How many brass round head screws come in a jar of Metallics JRMB22?
They ship 100 to a jar, and the jar is the order minimum, so the smallest quantity is 100 pieces. Packed weight is listed at 0.9 lbs.
4) Why use a brass machine screw instead of steel or stainless for electrical work?
Brass is the material here, and it is the usual choice where you want a non-magnetic, corrosion-resistant fastener with good electrical conductivity, which is why Metallics lists the JRMB22 for electrical, plumbing, and HVAC work. If your load is structural rather than a cover plate or bonding connection, steel or stainless gives more tensile strength than brass.
5) How much does the round head stand up off the surface, and how wide is it?
Head height is 0.16 to 0.175 inch and head diameter is 0.443 to 0.472 inch, which is why this one is not a flush fastener. If the screw head has to sit flat in a countersunk hole, you need a flat head instead of this round head.
6) Do these brass screws meet a recognized dimensional spec for submittals?
Head and drive dimensions follow ASME B18.6.3, the standard for inch-series machine screws, and the thread conforms to ANSI/ASME B1.1. Those are the two references to cite on a submittal for the JRMB22.
7) Is a 3/8 inch long 1/4-20 brass screw long enough for a device box or cover plate?
At 3/8 inch of overall length under the head, it suits thin stock: cover plates, straps, clamps, and ground connections into a tapped lug or boss. Anything with standoffs, gaskets, or stacked material will bottom out the threads before it clamps, so step up in length for those.
How fast can I get the Metallics JRMB22 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 JRMB22 come with a warranty?
Absolutely. The Metallics JRMB22 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 JRMB22?
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 JRMB22 from ZenSupply?
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