Metallics JSRM29P 1/4-20 x 3/8...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$192.86
Metallics JSRM29P 1/4-20 x 3/8 in. Round Head Phillips Machine Screws - 18-8 Stainless - 100qty

Metallics JSRM29P 1/4-20 x 3/8 in. Round Head Phillips Machine Screws - 18-8 Stainless - Each

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Model: JSRM29P
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In Stock (leaves warehouse same day if ordered before 3pm ET)

$192.86
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1/4-20 x 3/8 in. Round Head Phillips Machine Screws - 18-8 Stainless - 100qty

  • Features

    • 18-8 stainless Material
    • 1/4-20 Diameter, 3/8" Length
    • Round head with Phillips Drive

  • 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:
C
Buy American Compliant:
C
Division:
Electrical H1
Drive Type:
Phillips
Driver Size:
#3
Fastener Head Height:
0.16 - 0.175 in.
Fastener Head Type:
Round
Fastener Head Width:
0.443 - 0.472 in.
Fastener Length:
8-Mar
Hardness:
Rockwell B85-B95
Language Code:
EN
Material Standard:
SAE
Order Minimum Imperial:
100
Order Minimum Uom Imperial:
CT
Pack Type:
Jar
Phillips Recess Depth:
0.121 - 0.147
Phillips Recess Diameter:
0.255 - 0.268
Phillips Recess Width:
0.034
Product Group:
Fasteners
Product Height:
2.15 in
Product Length:
3 in
Product Weight:
0.67 lbs
Product Width:
3 in
Recess Penetration Gaging Depth:
0.104 - 0.130
Sub Division:
Electrical-E H2
Tensile Strength:
80000 psi minimum
Thread Per Inch:
20
Department:
Electrical
Product Subgroup:
Screws
Product Type:
Machine Screw
Type2:
Machine Screw
Series:
SRM
Product Details:
Machine Screw
Product Material:
18-8 Stainless

Metallics JSRM29P – Frequently Asked Questions

1) What thread size and length are the Metallics JSRM29P machine screws?
The JSRM29P is a 1/4-20 machine screw, 3/8 inch long, with 20 threads per inch. That is a coarse 1/4 inch UNC thread, so it mates with 1/4-20 tapped holes and standard 1/4-20 nuts. The short 3/8 inch length suits thin panels, device plates, and strut or box attachments where only a few threads of engagement are available.
2) Are these Metallics screws stainless, and will they hold up outdoors or in damp locations?
They are 18-8 stainless steel, the common austenitic grade used for general corrosion resistance in wet and outdoor-exposed work. Hardness runs Rockwell B85-B95. Note that 18-8 is corrosion resistant rather than hardened like a plated alloy screw, so for structural loading check the strength figure rather than assuming grade 5 or 8 behavior.
3) How much room does the round head take up, and will it clear a flush surface?
Round head, not flat or truncated, so it sits proud of the surface. The head measures 0.443 to 0.472 inch across and 0.16 to 0.175 inch high. If you need the fastener flush in a countersunk hole, a round head will not work; specify a flat head machine screw instead.
4) Can I use a machine screw like this in sheet metal or wood?
No. A machine screw has a straight, uniform 1/4-20 machine thread with no point, so it needs a tapped hole or a nut to engage. Driving it into bare sheet metal or wood will not hold. For a tapped box, strut nut, or threaded insert it is the correct fastener; for unthreaded material use a self-drilling or wood screw instead.
5) What tensile strength do these 1/4-20 stainless machine screws have?
Rated at 80,000 psi minimum tensile. Metallics notes that tensile values for stainless screws are approximations, because there is no single performance standard for stainless machine screws, so treat it as a guide and not as a graded structural rating.
6) What size Phillips driver do I need for these screws?
A #3 Phillips bit. The recess measures 0.255 to 0.268 inch in diameter with a depth of 0.121 to 0.147 inch, so a #2 bit will sit shallow in the recess and cam out under torque. Stock #3 bits on the cart if your crews normally carry #2 only.
7) How are the JSRM29P screws packaged and what is the minimum order?
They ship in a jar of 100 pieces, and 100 count is the order minimum. Total weight for the jar is 0.67 lbs. Metallics lists other sizes and quantities as available by request if 3/8 inch is too short for your application.
8) Do these Metallics stainless screws meet Buy American or ARRA requirements for a public project?
Metallics lists the JSRM29P as both ARRA compliant and Buy American compliant, with country of origin China. For federally funded work, verify which compliance clause your contract cites, since those two designations are not interchangeable on every job.
9) Will stainless screws gall or seize when I run them into stainless threads?
18-8 stainless on 18-8 stainless is prone to galling under speed and torque, and at Rockwell B85-B95 these screws are not hard enough to resist it. Drive them slowly or use an anti-seize on the threads when mating into stainless tapped holes. Into steel or aluminum threads it is less of a concern.
How fast can I get the Metallics JSRM29P 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 JSRM29P come with a warranty?
Absolutely. The Metallics JSRM29P 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 JSRM29P?
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 JSRM29P from ZenSupply?
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