Metallics JRMB108 1/4-20 x 3 i...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$771.43
Metallics JRMB108 1/4-20 x 3 in. Round Head Slotted Machine Screws - Brass - 100qty

Metallics JRMB108 1/4-20 x 3 in. Round Head Slotted Machine Screws - Brass - Each

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Model: JRMB108
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In Stock (leaves warehouse same day if ordered before 3pm ET)

$771.43
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1/4-20 x 3 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

    • 1/4-20 Diameter, 3" Length
    • Brass Material
    • Round head with slotted Drive

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:
0.16 - 0.175 in.
Fastener Head Type:
Round
Fastener Head Width:
0.443 - 0.472 in.
Fastener Length:
3
Language Code:
EN
Order Minimum Imperial:
100
Order Minimum Uom Imperial:
CT
Pack Type:
Jar
Product Group:
Fasteners
Product Height:
5.75 in
Product Length:
3.5 in
Product Weight:
3.84 lbs
Product Width:
3.5 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 JRMB108 – Frequently Asked Questions

1) Will a 1/4-20 machine screw thread into a standard 1/4-20 tapped hole or nut?
Yes. The Metallics JRMB108 is cut to 1/4-20 with 20 threads per inch to ANSI/ASME B1.1, so it mates with any standard 1/4-20 UNC tapped hole, nut, or threaded insert. Dimensions follow ASME B18.6.3 for slotted round head machine screws, so head size and slot geometry are to the normal commercial standard.
2) How much material can a 3 inch 1/4-20 brass machine screw go through?
The JRMB108 has a 3 inch shank length measured below the round head, so plan the grip on that: the combined thickness of what you are clamping plus enough thread left for the nut or tapped hole. Round head screws are measured head-bottom to point, unlike flat heads which include the head. For thinner assemblies the same 1/4-20 brass screw is made in shorter lengths.
3) Will the round head sit flush, or do I need a flat head screw?
It will not sit flush. The JRMB108 has a round head measuring 0.443 to 0.472 inch across and 0.16 to 0.175 inch high, so it stands proud of the surface and bears on the face of the material. Use it on untapped sheet, cover plates, and clamp joints where a raised head is fine. If the head has to disappear into a countersunk hole, you need a flat head machine screw instead.
4) How are these Metallics brass machine screws packaged, and is there a minimum order?
They ship in a jar of 100, and 100 count is the order minimum. Total packed weight is 3.84 lbs. For an MRO crib or a service van that is one jar per bin location, not loose counts.
5) Do these screws qualify for a Buy American or ARRA funded project?
Metallics flags the JRMB108 as both ARRA compliant and Buy American compliant, with country of origin listed as China. On a federally funded job, check which clause your contract actually invokes, because the compliance flag and the origin are recorded separately here.
6) Do machine screws like these come with nuts?
No. The JRMB108 is sold as screws only, 100 to the jar, with no nuts or washers included. Machine screws are made to run into a tapped hole or a matching nut, so order 1/4-20 brass hex nuts and any flat or lock washers separately if the hole is not already threaded.
How fast can I get the Metallics JRMB108 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 JRMB108 come with a warranty?
Absolutely. The Metallics JRMB108 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 JRMB108?
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 JRMB108 from ZenSupply?
ZenSupply makes it easy to get the commercial door hardware you need—fast shipping, expert support, and rewards on every order. Our team is always ready to help you choose the right product for your project.
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