Metallics JRM20M 10-32 x 3/8 i...
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Metallics JRM20M 10-32 x 3/8 in. Round Head Combo Machine Screws - Steel Zinc - 1000qty

Metallics JRM20M 10-32 x 3/8 in. Round Head Combo Machine Screws - Steel Zinc - Each

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Model: JRM20M
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In Stock (leaves warehouse same day if ordered before 3pm ET)

$50.10
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10-32 x 3/8 in. Round Head Combo Machine Screws - Steel Zinc - 1000qty

  • Additional Notes

    • In 1985, Metallics was the first fastener company in America to offer a full line of Combo’s! | 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 and Phillips Drive
    • 10-32 Diameter, 3/8" Length
    • Steel Zinc Material

Manufacturer Resources

Product Specs

Minimum Purchase:
1000 units
Arra Compliant:
N
Buy American Compliant:
No
Division:
Electrical H1
Drive Type:
Slotted/Phillips
Driver Size:
#2
Fastener Head Height:
0.123 - 0.137 in.
Fastener Head Type:
Round
Fastener Head Width:
0.334 - 0.359 in.
Fastener Length:
8-Mar
Hardness:
Rockwell B70-B100
Language Code:
EN
Material Standard:
AISI 1006 - 1022
Order Minimum Imperial:
1000
Order Minimum Uom Imperial:
TH
Pack Type:
Jar
Phillips Recess Depth:
0.093 - 0.119
Phillips Recess Diameter:
0.182 - 0.195
Phillips Recess Width:
0.031
Product Group:
Fasteners
Recess Penetration Gaging Depth:
0.082 - 0.108
Slot Depth:
0.065 - 0.087
Slot Width:
0.05 - 0.06
Sub Division:
Electrical-E H2
Tensile Strength:
60000 psi minimum
Thread Per Inch:
32
Department:
Electrical
Product Subgroup:
Screws
Product Type:
Machine Screw
Type2:
Machine Screw
Series:
JRM
Product Finish:
Zinc
Product Details:
Machine Screw
Product Material:
Steel Zinc

Metallics JRM20M – Frequently Asked Questions

1) Will the Metallics JRM20M 10-32 screw thread into a standard electrical box or device yoke?
Yes. The JRM20M is a 10-32 machine screw with 32 threads per inch, which is the standard thread used on outlet box tapped holes, device mounting yokes and ground screw holes in North American electrical work. At 3/8 inch long it is sized for mounting a device or plate directly to a box ear rather than reaching through spacers.
2) Will the Metallics JRM20M meet a Buy American or ARRA requirement on a public job?
No. The JRM20M is not Buy American compliant and is not ARRA compliant, with country of origin listed as multiple. On a federally funded project with domestic sourcing language, this screw will not satisfy that clause.
3) Does the JRM20M take a Phillips or a flat blade screwdriver?
Either one. It is a combo head, slotted and Phillips in the same recess, so a crew can drive it with whatever is on the belt. Phillips drivers in a #2 size fit the recess, which runs 0.182 to 0.195 inch in diameter. The slot is 0.05 to 0.06 inch wide, so a standard small flat tip seats properly.
4) How much does the round head on a 10-32 Metallics combo machine screw stick up, and will it clear a cover plate?
The round head measures 0.334 to 0.359 inch across and sits 0.123 to 0.137 inch proud of the surface. That domed profile is not flush, so if you need the screw to sit level with a plate or a bracket face you want a flat head countersunk screw instead of the JRM round head.
5) How are Metallics JRM machine screws packaged, and what is the minimum order?
They come in a jar, and the order minimum is 1000 pieces. That is a bulk MRO pack, not a small blister count, so it suits a shop drawer or a service van restock rather than a single repair.
6) Are zinc plated steel machine screws like the JRM20M OK for outdoor or damp locations?
The JRM20M is AISI 1006 to 1022 carbon steel with a zinc finish. Zinc plating is a mild corrosion coating meant for dry indoor service; for wet, washdown or exterior work, specify a stainless machine screw in the same 10-32 x 3/8 size instead.
7) Is a 3/8 inch long 10-32 screw enough thread for stacking a device with a spacer or a thick plate?
Probably not. At 3/8 inch there is only enough shank to pass through a device ear or a thin bracket and still pick up a few threads in the tapped hole. If you are shimming a device out of a recessed box or going through a heavy mounting plate, step up to a longer 10-32 in the same JRM round head combo pattern.
8) What is the tensile strength and hardness of the Metallics 10-32 combo machine screw?
Minimum tensile strength is 60,000 psi, with hardness of Rockwell B70 to B100. That is standard low carbon steel machine screw duty, fine for device, plate, bracket and enclosure mounting. It is not a structural grade fastener, so do not substitute it where a drawing calls out a graded bolt.
How fast can I get the Metallics JRM20M 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 JRM20M come with a warranty?
Absolutely. The Metallics JRM20M 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 JRM20M?
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 JRM20M from ZenSupply?
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