Metallics JSHC838 8-32 x 3/8 i...
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Metallics JSHC838 8-32 x 3/8 in. Socket Head Hex Cap Screws - Alloy Steel Black - Each

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Model: JSHC838

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

$50.33
$0.33
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8-32 x 3/8 in. Socket Head Hex Cap Screws - Alloy Steel Black - 100qty

  • Features

    • Supplies greater tensile strength than equivalent sizes of Grade-5 or Grade-8 hex head cap screws while requiring less surface area or counterbore since the fastener is intenally wrenched.
    • Alloy Steel Black Material
    • Socket head with Hex Drive
    • 8-32 Diameter, 3/8" Length
    • Elongation is 10% minimum (applies to machined specimens of lenglh at least 4D where D equals the nominal diameter of the screw) and Reduction of Area is 33% minimum (applies to machined specimens)

  • Additional Notes

    • Other sizes and quantities available by request | Cap screws of a length 3D or greater, where D equals the nominal diameter of the screw, are subject to tensile strength, yield strength, elongation and reduction of area testing.

Manufacturer Resources

Product Specs

Minimum Purchase:
100 units
Arra Compliant:
N
Buy American Compliant:
No
Dimensional Standard:
ASME B18.3-2012
Division:
Electrical H1
Drive Type:
Hex
Fastener Head Height:
0.159 - 0.164 in.
Fastener Head Type:
Socket
Fastener Head Width:
0.262 - 0.27 in.
Fastener Length:
8-Mar
Field Application:
Electrical, Plumbing, Heating and Air Conditioning Industries
Hardness:
Rockwell C39
Hex Size:
Sep-64
Language Code:
EN
Neurspe:
https://ideadigitalasset.com/DAMRoot/Original/10035/11237_ID-SPE-v1-ID-SPE-v1-Socket_Head_Cap_Screw_Alloy_Zinc.pdf
Order Minimum Imperial:
100
Order Minimum Uom Imperial:
JR
Pack Type:
Jar
Product Group:
Fasteners
Product Height:
2.15 in
Product Length:
3 in
Product Weight:
0.42 lbs
Product Width:
3 in
Slot Depth:
0.077
Sub Division:
Electrical-E H2
Tensile Strength:
180000 psi minimum
Thread Per Inch:
32
Thread Type:
UN
Wall Thickness:
0.056
Yield Strength:
162000 psi minimum
Department:
Electrical
Product Subgroup:
Screws
Product Type:
Cap Screw
Type2:
Cap Screw
Series:
SHC
Product Finish:
Black
Product Details:
Cap Screw
Product Material:
Alloy Steel Black

Metallics JSHC838 – Frequently Asked Questions

1) What size hex key do I need to drive a #8-32 socket head cap screw?
It's an internally wrenched socket head with a hex drive, so you drive it with an Allen key, not a wrench on the outside of the head. A #8-32 socket head cap screw takes a 9/64 in. hex key. Because the drive is internal, you only need clearance for the 0.262 to 0.27 in. head diameter rather than room to swing a wrench.
2) What counterbore do I need so the head of this 8-32 cap screw sits flush?
Size the counterbore off the head dimensions: the head measures 0.262 to 0.27 in. across and 0.159 to 0.164 in. high, so a bore slightly over 0.27 in. diameter and at least 0.164 in. deep buries the head below the surface. Head geometry follows ASME B18.3-2012, so any standard socket head counterbore chart for a #8 screw applies.
3) Will an 8-32 socket head cap screw thread into a standard #8-32 tapped hole or nut?
Yes. The JSHC838 is cut 8-32 UN thread, 32 threads per inch, which is the standard coarse machine screw thread for a #8, so it mates with any #8-32 tapped hole, nut, or insert. Thread length is the full 3/8 in. of the screw, so your tapped depth only needs to be enough to take 3/8 in. minus whatever material the screw is clamping.
4) Is a socket head cap screw stronger than a Grade 5 or Grade 8 hex head screw of the same size?
Stronger in tension, yes. The alloy steel socket head runs 180,000 psi minimum tensile and 162,000 psi minimum yield, above what equivalent-size Grade 5 or Grade 8 hex head cap screws deliver, and it does it in a smaller head footprint because it's wrenched from the inside. Hardness is Rockwell C39. Use it where you need high clamp load in a tight pocket; a hex head is the better pick when you want to run it with an open-end or box wrench in the field.
5) Do these Metallics cap screws meet Buy American or ARRA requirements for a public project?
No. The JSHC838 is not Buy American compliant and is not ARRA compliant, with country of origin listed as multiple. If your spec carries a domestic-sourcing clause, this fastener won't satisfy it.
6) How are these 8-32 socket head cap screws packaged, and what's the minimum I can buy?
They ship in a jar of 100. The order minimum is one jar, 100 pieces, at 0.42 lbs for the pack. Metallics lists other sizes and quantities as available by request if 3/8 in. length isn't what the job needs.
7) Are these black cap screws corrosion protected, or do they need to stay indoors?
The finish is a plain black alloy steel, not a plated or galvanized coating, so treat it as an indoor or protected-location fastener. Metallics lists it for electrical, plumbing, and HVAC work, which is where you see it most: panel and enclosure assembly, equipment mounting, strut and bracket work inside a building. For wet or exterior duty, go to a zinc plated or stainless fastener instead.
How fast can I get the Metallics JSHC838 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 JSHC838 come with a warranty?
Absolutely. The Metallics JSHC838 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 JSHC838?
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
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