Metallics JSRM133 3/8-16 x 1/2...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$385.71
Metallics JSRM133 3/8-16 x 1/2 in. Round Head Slotted Machine Screws - 18-8 Stainless - 100qty

Metallics JSRM133 3/8-16 x 1/2 in. Round Head Slotted Machine Screws - 18-8 Stainless - Each

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Model: JSRM133
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In Stock (leaves warehouse same day if ordered before 3pm ET)

$385.71
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3/8-16 x 1/2 in. Round Head Slotted Machine Screws - 18-8 Stainless - 100qty

  • Features

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

  • 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.

Manufacturer Resources

Product Specs

Minimum Purchase:
100 units
Arra Compliant:
N
Buy American Compliant:
No
Division:
Electrical H1
Drive Type:
Slotted
Fastener Head Height:
0.237 - 0.256 in.
Fastener Head Type:
Round
Fastener Head Width:
0.67 - 0.708 in.
Fastener Length:
2-Jan
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
Product Group:
Fasteners
Product Height:
4.57 in
Product Length:
3 in
Product Weight:
2.86 lbs
Product Width:
3 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:
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 JSRM133 – Frequently Asked Questions

1) What thread size and pitch are the Metallics JSRM133 machine screws?
The JSRM133 is a 3/8-16 machine screw, so 3/8 inch nominal diameter with 16 threads per inch (UNC coarse), in a 1/2 inch length. If your tapped hole or nut is 3/8-24 fine thread, this won't thread in; you need the coarse 3/8-16 pitch.
2) Can I use these on a federally funded or Buy American job?
No. The JSRM133 is not Buy American compliant and is not ARRA compliant; country of origin is listed as multiple. If your contract carries a domestic-sourcing clause, you'll need a domestically manufactured stainless machine screw instead.
3) Are these stainless screws OK for outdoor or wet locations?
The material is 18-8 stainless, the common 300-series austenitic grade, so these hold up in damp and outdoor exposure far better than plated steel - wet-location boxes, rooftop equipment, mechanical rooms. 18-8 is not the grade for continuous salt spray or chemical immersion; 316 stainless is the choice there. Note 18-8 is non-magnetic and will not hold on a magnetic driver tip.
4) How strong are these stainless machine screws?
Tensile strength is 80,000 psi minimum, with hardness at Rockwell B85-B95. Metallics notes that tensile values for stainless screws are approximations, since there's no single performance standard for stainless machine screws. For structural or rated load-bearing connections, spec a graded carbon steel fastener to a published standard instead.
5) How are the Metallics JSRM133 screws packaged, and what is the minimum order?
They come in a jar of 100, and 100 is the order minimum - one jar. Shipping weight on the jar is 2.86 lbs. That's a shop or truck-stock quantity, convenient for an MRO crib where you want 3/8-16 stainless on the shelf rather than ordering per job.
6) Do machine screws like these need a nut, or do they thread into the part?
A machine screw has a straight, fully formed machine thread with a blunt end - it does not cut its own thread. You either run it into a pre-tapped 3/8-16 hole or pair it with a 3/8-16 nut through a drilled hole. If you're fastening into sheet metal with no tapped hole, a self-tapping or sheet metal screw is the right part, not this.
7) What trades actually use these 3/8-16 stainless round head screws?
Metallics lists the field application as electrical, plumbing, heating and air conditioning work. Typical uses are mounting straps, brackets, clamps, and enclosure hardware where a tapped hole or nut is available and corrosion resistance matters. The round slotted head is the traditional profile for electrical device and box hardware.
How fast can I get the Metallics JSRM133 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 JSRM133 come with a warranty?
Absolutely. The Metallics JSRM133 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 JSRM133?
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 JSRM133 from ZenSupply?
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