12-24 x 3 in. Round Head Slotted Machine Screws - Steel Zinc - 100qty
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
- Steel Zinc Material
- Round head with slotted Drive
- 12-24 Diameter, 3" Length
Manufacturer Resources
Product Specs
- Minimum Purchase:
- 100 units
- Arra Compliant:
- N
- Buy American Compliant:
- No
- Division:
- Electrical H1
- Drive Type:
- Slotted
- Fastener Head Height:
- 0.139 - 0.153 in.
- Fastener Head Type:
- Round
- Fastener Head Width:
- 0.382 - 0.408 in.
- Fastener Length:
- 3
- Hardness:
- Rockwell B70-B100
- Language Code:
- EN
- Material Standard:
- AISI 1006 - 1022
- Order Minimum Imperial:
- 100
- Order Minimum Uom Imperial:
- CT
- Pack Type:
- Jar
- Product Group:
- Fasteners
- Recess Penetration Gaging Depth:
- 0.082 - 0.108
- Slot Depth:
- 0.073 - 0.096
- Slot Width:
- 0.056 - 0.067
- 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 JRM138SLT – Frequently Asked Questions
1) Do these Metallics screws qualify for a Buy American or ARRA funded job?
No. The JRM138SLT is not Buy American compliant and is not ARRA compliant; country of origin is listed as multiple. If you are on a federally funded or domestic-content specified project, you need a domestically sourced 12-24 machine screw instead.
2) Are zinc plated steel machine screws okay for outdoor or damp locations?
These are zinc plated steel, AISI 1006 to 1022 low carbon stock. Zinc plating handles indoor and protected locations fine, but it is a sacrificial coating, not stainless. For wet, coastal or chemically aggressive environments, specify a stainless machine screw in the same 12-24 x 3 size instead.
3) How strong is a 12-24 x 3 in. Metallics machine screw?
Minimum tensile strength is 60,000 psi, with hardness of Rockwell B70 to B100. That is standard low carbon steel machine screw grade, correct for device mounting, fixture hanging, panel and enclosure fastening. It is not a structural bolt, so do not substitute it where a Grade 5 or Grade 8 cap screw is called out on the drawing.
4) Will a round head screw work where the spec calls for a flush or countersunk fastener?
No. A round head sits proud of the surface with a domed profile roughly 0.139 to 0.153 in. tall, so it will not sit flush and it will not seat in a countersunk hole. For flush work you need a flat head machine screw in the same 12-24 x 3 size.
5) How do these 12-24 screws ship, and is there a minimum quantity?
They come in a jar, with an order minimum of 100 count. Good packaging for a van or shop drawer where you are pulling a handful at a time rather than opening a bulk box.
How fast can I get the Metallics JRM138SLT 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 JRM138SLT come with a warranty?
Absolutely. The Metallics JRM138SLT 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 JRM138SLT?
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 JRM138SLT from ZenSupply?
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