Metallics JSHC344 3/4-10 x 4 i...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$675.00
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Metallics JSHC344 3/4-10 x 4 in. Socket Head Hex Cap Screws - Alloy Steel Black - Each

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Model: JSHC344

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

$675.00
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3/4-10 x 4 in. Socket Head Hex Cap Screws - Alloy Steel Black - 25qty

  • 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.

  • 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.
    • 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)
    • 3/4-10 Diameter, 4" Length
    • Socket head with Hex Drive
    • Alloy Steel Black Material

Manufacturer Resources

Product Specs

Minimum Purchase:
25 units
Arra Compliant:
N
Buy American Compliant:
No
Dimensional Standard:
ASME B18.3-2012
Division:
Electrical H1
Drive Type:
Hex
Fastener Head Height:
0.74 - 0.75 in.
Fastener Head Type:
Socket
Fastener Head Width:
1.107 - 1.125 in.
Fastener Length:
4
Field Application:
Electrical, Plumbing, Heating and Air Conditioning Industries
Hardness:
Rockwell C39
Hex Size:
8-May
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:
25
Order Minimum Uom Imperial:
EA
Pack Type:
Jar
Product Group:
Fasteners
Product Height:
7.25 in
Product Length:
4.5 in
Product Weight:
6.29 lbs
Product Width:
4.5 in
Slot Depth:
0.37
Sub Division:
Electrical-E H2
Tensile Strength:
170000 psi minimum
Thread Per Inch:
10
Thread Type:
UN
Wall Thickness:
0.285
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 JSHC344 – Frequently Asked Questions

1) What size and thread is the Metallics JSHC344 socket head cap screw?
It's a 3/4-10 x 4 inch socket head cap screw: 3/4 inch nominal diameter, 10 threads per inch, UN thread form, with a 4 inch length under the head. Coarse 3/4-10 is the standard UNC pitch at that diameter, so it mates with standard 3/4-10 nuts and tapped holes.
2) How strong is this socket head cap screw compared to a Grade 8 hex bolt?
The alloy steel socket head version runs 170,000 psi minimum tensile and 162,000 psi minimum yield, hardness Rockwell C39. That's above the strength of equivalent-size Grade 5 or Grade 8 hex head cap screws, and because it's internally wrenched you need less surface area or counterbore clearance around the head.
3) What size counterbore and hex key do I need for a 3/4-10 socket head cap screw?
Head dimensions are 1.107 to 1.125 inches across and 0.74 to 0.75 inches tall, so size the counterbore diameter and depth off those numbers if the head has to sit flush. Drive is an internal hex, socket depth 0.37 inch.
4) Can I use the Metallics JSHC344 on a federally funded job with Buy American requirements?
No. The JSHC344 is not Buy American compliant and is not ARRA compliant, with country of origin listed as multiple. If your contract carries domestic-sourcing language, you need a documented domestic fastener instead.
5) Does the JSHC344 meet a recognized dimensional standard for socket head cap screws?
Yes, it is built to ASME B18.3-2012, the dimensional standard for socket cap screws and hex keys. That means head and socket geometry are interchangeable with any other B18.3 socket head cap screw of the same 3/4-10 size.
6) Is this cap screw sold individually or do I have to buy a pack?
Order minimum is 25 each, supplied in a jar. So it's priced per screw but you take 25 at a time.
7) Is the black finish on these alloy steel cap screws suitable for outdoor or wet locations?
The material is alloy steel with a black finish, which is a plain oxide-type appearance, not a corrosion barrier like zinc or hot-dip galvanizing. For exposed outdoor, damp, or chemically aggressive work, choose a plated or stainless fastener instead. Dry interior structural, equipment, and machine-mounting work is where this one belongs.
8) What trades actually use a 3/4-10 x 4 in. socket head cap screw like this?
Metallics lists it for electrical, plumbing, and heating and air conditioning work. In practice that means anchoring heavy equipment, unistrut and channel assemblies, pump and motor bases, and other mounting where high clamp load matters and there isn't room to swing a wrench around a hex head.
How fast can I get the Metallics JSHC344 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 JSHC344 come with a warranty?
Absolutely. The Metallics JSHC344 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 JSHC344?
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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