Metallics JSRM139P 3/8-16 x 1-...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$1,157.14
Metallics JSRM139P 3/8-16 x 1-1/2 in. Round Head Phillips Machine Screws - 18-8 Stainless - 100qty

Metallics JSRM139P 3/8-16 x 1-1/2 in. Round Head Phillips Machine Screws - 18-8 Stainless - Each

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Model: JSRM139P
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In Stock (leaves warehouse same day if ordered before 3pm ET)

$1,157.14
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3/8-16 x 1-1/2 in. Round Head Phillips Machine Screws - 18-8 Stainless - 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

    • 3/8-16 Diameter, 1-1/2" Length
    • 18-8 stainless Material
    • Round head with Phillips Drive

Manufacturer Resources

Product Specs

Minimum Purchase:
100 units
Arra Compliant:
N
Buy American Compliant:
No
Division:
Electrical H1
Drive Type:
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:
1/1/02
Field Application:
Electrical, Plumbing, Heating and Air Conditioning Industries
Hardness:
Rockwell B85-B95
Language Code:
EN
Material Standard:
SAE
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:
5.75 in
Product Length:
3.5 in
Product Weight:
5.39 lbs
Product Width:
3.5 in
Recess Penetration Gaging Depth:
0.182 - 0.208
Sub Division:
Electrical-E H2
Tensile Strength:
80000 psi minimum
Thread Per Inch:
16
Department:
Electrical
Product Subgroup:
Screws
Product Type:
Machine Screw
Type2:
Machine Screw
Series:
SRM
Product Details:
Machine Screw
Product Material:
18-8 Stainless

Metallics JSRM139P – Frequently Asked Questions

1) What thread does the Metallics JSRM139P machine screw use, and will it take a standard 3/8-16 nut?
It is a 3/8-16 thread, 16 threads per inch, which is the standard coarse (UNC) pitch for 3/8 inch. Any 3/8-16 UNC nut or tapped 3/8-16 hole will accept it. Shank length is 1-1/2 inches, measured under the round head since machine screws of this head style are length-measured from below the head.
2) What size Phillips bit do I need for these 3/8-16 stainless machine screws?
A #4 Phillips driver. That is a larger bit than the #2 or #3 most techs carry loose in the pouch, so bring one before you get on the ladder. The recess is 0.374 to 0.387 inch in diameter and 0.202 to 0.228 inch deep, which is why the smaller tip will cam out and chew the head.
3) Do these 18-8 stainless screws meet Buy American or ARRA requirements for a public project?
No. The JSRM139P is not Buy American compliant and not ARRA compliant, with multiple countries of origin. On a federally funded or domestic-preference job you will need a domestically sourced fastener instead.
4) How much material thickness can a 1-1/2 inch round head machine screw clamp?
With 1-1/2 inches of thread under the head, you get a usable grip of that length minus whatever thread you need engaged in the nut or tapped hole. The round head itself adds 0.237 to 0.256 inch of height above the surface and spans 0.67 to 0.708 inch across, so it bears on the material rather than sinking into it. If you need a flush surface, this is the wrong head style.
5) Are these stainless machine screws OK for outdoor or damp locations?
They are 18-8 stainless, the common austenitic grade used where plated steel would rust, so they suit damp and exterior work, wet-location enclosures, and mechanical rooms. The intended field is electrical, plumbing, and HVAC work. If the installation is marine or chloride-heavy, 18-8 is not the grade for it.
6) What tensile strength can I count on from a 3/8-16 18-8 stainless machine screw?
The listed figure is 80,000 psi minimum, with a hardness of Rockwell B85 to B95, referenced to SAE material standards. Treat that tensile number as an approximation: there is no single performance standard for stainless machine screws, so for a load-rated or structural connection specify a graded steel bolt rather than a stainless machine screw.
7) Do these machine screws come with nuts or washers?
No. The JSRM139P is the screw only, 100 round head Phillips screws to a jar. Order 3/8-16 nuts and any flat or lock washers separately, and keep them in stainless if you want to avoid galvanic issues with the 18-8 screw.
8) Can I get this screw in another length or a bigger pack?
Other sizes and quantities in the Metallics SRM round head machine screw series are available by request. The JSRM139P itself is fixed at 3/8-16 x 1-1/2 inch in a 100 piece jar.
How fast can I get the Metallics JSRM139P 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 JSRM139P come with a warranty?
Absolutely. The Metallics JSRM139P 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 JSRM139P?
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 JSRM139P from ZenSupply?
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