Metallics JRMB69 4-40 x 3/4 in...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$50.56
$0.56
Metallics JRMB69 4-40 x 3/4 in. Round Head Slotted Machine Screws - Brass - 100qty

Metallics JRMB69 4-40 x 3/4 in. Round Head Slotted Machine Screws - Brass - Each

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Model: JRMB69
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In Stock (leaves warehouse same day if ordered before 3pm ET)

$50.56
$0.56
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4-40 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
    • 4-40 Diameter, 3/4" Length
    • Brass Material

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:
0.075 - 0.086 in.
Fastener Head Type:
Round
Fastener Head Width:
0.193 - 0.211 in.
Fastener Length:
4-Mar
Language Code:
EN
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:
0.29 lbs
Product Width:
3 in
Recess Penetration Gaging Depth:
0.046 - 0.065
Slot Depth:
0.044 - 0.058
Slot Width:
0.031 - 0.039
Sub Division:
Electrical-E H2
Thread Per Inch:
40
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 JRMB69 – Frequently Asked Questions

1) How much room does the round head take up above the surface?
Round head, sitting 0.075 to 0.086 inch proud with a head width of 0.193 to 0.211 inch. That head sits entirely on top of the material, so you need that clearance above the mounting surface. If you need the head flush, a round head is the wrong choice and you want a flat head screw in a countersunk hole instead.
2) Do these brass screws meet Buy American and ARRA requirements for a public job?
The JRMB69 is flagged compliant for both Buy American and ARRA. Country of origin is China. On a federally funded project, give your specifying authority both of those facts, since the compliance path for a given contract may hinge on origin.
3) Are these machine screws made to a dimensional spec, or are they generic imports?
Head and slot geometry is held to ASME B18.6.3, the dimensional standard for slotted and recessed head machine screws, and the thread is to ANSI/ASME B1.1. That is why the head width, head height and slot dimensions are published as ranges rather than single numbers, and it is what lets you substitute them for any other B18.6.3 round head slotted 4-40 screw of the same length.
4) How are the Metallics JRMB69 brass machine screws packaged and what is the minimum order?
They ship in a jar, with a minimum of 100 count. Shipping weight on the jar is 0.29 lbs, and the container measures 3 x 2.15 x 3 inches, so it stores easily on a van shelf or in a parts drawer.
5) Can I use the JRMB69 brass screws as structural or load bearing fasteners?
No. These are 4-40 brass machine screws for light assembly, device and small component mounting. Brass has no published tensile rating here, and even the stainless equivalents in this family carry only approximate tensile values because there is no single performance standard for stainless machine screws. For anything carrying a load, use a rated steel fastener.
How fast can I get the Metallics JRMB69 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 JRMB69 come with a warranty?
Absolutely. The Metallics JRMB69 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 JRMB69?
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 JRMB69 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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