Metallics JRM123 3/8-16 x 2-1/...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$192.86
Metallics JRM123 3/8-16 x 2-1/2 in. Round Head Combo Machine Screws - Steel Zinc - 100qty

Metallics JRM123 3/8-16 x 2-1/2 in. Round Head Combo Machine Screws - Steel Zinc - Each

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Model: JRM123
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In Stock (leaves warehouse same day if ordered before 3pm ET)

$192.86
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3/8-16 x 2-1/2 in. Round Head Combo Machine Screws - Steel Zinc - 100qty

  • Features

    • Round head with slotted and Phillips Drive
    • 3/8-16 Diameter, 2-1/2" Length
    • Two Drives in one Head
    • 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:
N
Buy American Compliant:
No
Division:
Electrical H1
Drive Type:
Slotted/Phillips
Driver Size:
#4
Fastener Head Height:
0.237 - 0.256 in.
Fastener Head Type:
Round
Fastener Head Width:
0.67 - 0.708 in.
Fastener Length:
2/1/02
Field Application:
Electrical, Plumbing, Heating and Air Conditioning Industries
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:
JR
Pack Type:
Jar
Phillips Recess Depth:
0.202 - 0.228
Phillips Recess Diameter:
0.374 - 0.387
Phillips Recess Width:
0.064
Product Group:
Fasteners
Product Height:
7.25 in
Product Length:
4.5 in
Product Weight:
7.54 lbs
Product Width:
4.5 in
Recess Penetration Gaging Depth:
0.182 - 0.208
Slot Depth:
0.117 - 0.155
Slot Width:
0.081 - 0.094
Sub Division:
Electrical-E H2
Tensile Strength:
60000 psi minimum
Thread Per Inch:
16
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 JRM123 – Frequently Asked Questions

1) What thread size and length is the Metallics JRM123 machine screw?
The JRM123 is a 3/8-16 x 2-1/2 inch round head machine screw, so 3/8 inch nominal diameter with 16 threads per inch (a coarse UNC thread) and a 2-1/2 inch shank under the head. It mates with any 3/8-16 tapped hole or nut.
2) Do I need a Phillips or a flat blade driver for these Metallics combo screws?
Either one. The head carries both a slot and a Phillips recess in the same head, so a flat blade or a #4 Phillips bit will drive it. That is handy on a service call where you only have one driver in hand.
3) Is the Metallics JRM123 Buy American or ARRA compliant for a federal job?
No. The JRM123 is not Buy American compliant and is not ARRA compliant, with country of origin listed as multiple. If your project carries domestic sourcing requirements, this part will not satisfy them.
4) Are these zinc screws suitable for outdoor or wet locations?
These are zinc plated carbon steel, made from AISI 1006 to 1022 steel. Zinc plating is a mild corrosion barrier for dry indoor and protected locations, panel work, strut, enclosures and equipment mounting. For sustained wet, washdown or exterior exposure, specify stainless machine screws instead.
5) How strong are these machine screws, and what can I hang off them?
Minimum tensile strength is 60,000 psi, with a hardness of Rockwell B70 to B100. That is standard low carbon steel machine screw strength, fine for enclosures, device mounting, trim, fixture hangers and general equipment fastening. It is not a graded structural bolt, so anything the engineer has called out as Grade 5 or Grade 8 needs a different fastener.
6) How are the JRM123 screws packaged and is there a minimum order?
They come in a jar, with a minimum of 100 pieces per jar. Shipping weight on the jar is 7.54 lbs. Good buy for a shop that goes through one size repeatedly rather than a mixed job box.
7) Will a 3/8-16 machine screw thread into a strut channel nut?
Yes, provided the channel nut is a 3/8-16 nut. Strut channel nuts are sold by thread size, and 3/8-16 is one of the common ones, so match the nut's stamped size to the screw. The 2-1/2 inch length gives you plenty of thread to pass through a bracket plus the nut.
8) Do these machine screws come with nuts or washers?
No. The JRM123 is sold as screws only, 100 to a jar. If you are fastening through sheet metal or into strut rather than a tapped hole, order your 3/8-16 hex nuts, channel nuts, flat washers or lock washers separately.
9) What trades actually use a 3/8-16 combo round head machine screw?
Metallics lists the JRM series for the electrical, plumbing, heating and air conditioning industries. In practice that is strut and channel nut work, enclosure and panel mounting, hanger and bracket assembly, and equipment fastening into tapped holes or nuts.
How fast can I get the Metallics JRM123 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 JRM123 come with a warranty?
Absolutely. The Metallics JRM123 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 JRM123?
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 JRM123 from ZenSupply?
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