10-24 x 3 in. Round Head Slotted Machine Screws - Steel Zinc - 100qty
Features
- 10-24 Diameter, 3" Length
- Round head with slotted Drive
- Steel Zinc Material
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.
Manufacturer Resources
Product Specs
- Minimum Purchase:
- 100 units
- Arra Compliant:
- C
- Buy American Compliant:
- C
- Division:
- Electrical H1
- Drive Type:
- Slotted
- Fastener Head Height:
- 0.123 - 0.137 in.
- Fastener Head Type:
- Round
- Fastener Head Width:
- 0.334 - 0.359 in.
- Fastener Length:
- 3
- Hardness:
- Rockwell B70-B100
- Language Code:
- EN
- Material Standard:
- AISI 1006 - 1022
- 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:
- CT
- Pack Type:
- Jar
- Product Group:
- Fasteners
- Product Height:
- 4.57 in
- Product Length:
- 3 in
- Product Weight:
- 1.97 lbs
- Product Width:
- 3 in
- 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:
- 24
- 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 JRM127SLT – Frequently Asked Questions
1) Will a 10-24 machine screw thread into a standard electrical box or device ring?
Yes. The Metallics JRM127SLT is a 10-24 thread with 24 threads per inch, which is the standard machine screw thread used for device mounting in steel boxes, plaster rings and mud rings. At 3 inches long it is meant for deep builds, like reaching a device through thick tile, stone or multiple layers of drywall where the standard short screw runs out of reach.
2) Will the round head sit flush, or does it stand above the surface?
It stands proud. A round head has a domed top that seats on the surface rather than sinking into it, and on this screw the head measures 0.123 to 0.137 in. high and 0.334 to 0.359 in. across. If you need the head buried level with the material, a round head is the wrong choice and you want a flat head in a countersunk hole instead.
3) Can I drive these Metallics round head machine screws with a Phillips or square bit?
No. The drive is a single slot, so you need a flat blade screwdriver or a slotted bit. The slot is 0.05 to 0.06 in. wide and 0.065 to 0.087 in. deep, so a cabinet tip blade in that thickness range seats best. An oversized or worn blade will ride out of the slot and chew the zinc.
4) How many screws come in a pack of the JRM127SLT?
They ship 100 to a jar, and 100 count is the order minimum. If you need a different count, Metallics offers other sizes and quantities by request.
5) Is the head width going to clear a 10-24 hole in a device yoke or cover plate?
The head runs 0.334 to 0.359 in. across, so it fully covers a clearance hole drilled for a #10 screw and bears on the plate rather than pulling through. Keep that diameter in mind on tight recesses or narrow slots in a bracket, since the head is roughly a third of an inch wide and needs flat bearing surface around the hole.
6) Are zinc plated steel machine screws okay outdoors or in a damp location?
Zinc plated carbon steel is a mild corrosion coating meant for dry interior service. In wet, washdown or exterior locations the plating eventually breaks down and the steel rusts, so stainless is the better call there. This one is zinc finish over steel.
7) What is the tensile strength of these 10-24 screws, and can I torque them down hard?
Rated 60,000 psi minimum tensile, made from AISI 1006 to 1022 low carbon steel at Rockwell B70 to B100. That is standard commercial machine screw strength, fine for device mounting, brackets, covers and general MRO fastening. It is not a structural or high strength bolt, so do not substitute it where a graded cap screw is specified, and go easy on an impact driver, since a slotted head strips long before the shank fails.
8) Do these screws meet Buy American requirements for a government or institutional job?
The JRM127SLT is flagged ARRA compliant and Buy American compliant in the manufacturer data, with country of origin listed as China. On federal or publicly funded work, confirm which provision your contract cites, because ARRA and Buy American clauses are applied differently job to job.
9) Do machine screws like this come with nuts, or do I need to buy them separately?
Nuts are not part of the JRM127SLT, which is the screw only, 100 to a jar. A machine screw either threads into a tapped hole (like the 10-24 tapped ears on an electrical box or device strap) or needs a matching 10-24 nut ordered separately. Same for washers.
10) How much does a jar of 100 of the 10-24 x 3 in. screws weigh for shipping?
A 100 count jar weighs 1.97 lbs.
How fast can I get the Metallics JRM127SLT delivered?
Most orders ship the same day from our distribution partners, with quick delivery throughout the
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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 JRM127SLT come with a warranty?
Absolutely. The Metallics JRM127SLT is backed by a manufacturer’s warranty.
For full warranty terms, check the product documentation or Contact Us.
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