Metallics G8HC58312 Bolts 5/8-...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$58.17
$11.57
Metallics G8HC58312 Bolts 5/8-11 X 3-1/2 G8 Hxbt St-zn (Box 25)

Metallics G8HC58312 Bolts 5/8-11 X 3-1/2 G8 Hxbt St-zn (Box 25)

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Model: G8HC58312
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In Stock (leaves warehouse same day if ordered before 3pm ET)

$58.17
$11.57
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Bolts 5/8-11 X 3-1/2 G8 Hxbt St-zn (Box 25)

  • Additional Notes

    • Other sizes and quantities available by request

  • Features

    • Used in automotive and fleet industries, where greater tensile strength is required than can be met by a Grade-5
    • A cap screw made from medium carbon steel and heat-treated

Manufacturer Resources

Product Specs

Arra Compliant:
C
Buy American Compliant:
C
Division:
Electrical H1
Fastener Head Height:
27/64 in.
Fastener Head Type:
Hex
Fastener Head Width:
0.922 - 0.938 in.
Fastener Height:
0.378 - 0.403
Fastener Length:
3/1/02
Fastener Width:
1.033 - 1.083
Grade:
8
Hardness:
Rockwell C33-39
Language Code:
EN
Material Standard:
AISI 1021 - 1045
Neurspe:
https://ideadigitalasset.com/DAMRoot/Original/10035/11237_ID-SPE-v1-ID-SPE-v1-Gr_8_Hex_Bolt_St-Zn.pdf
Order Minimum Imperial:
25
Order Minimum Uom Imperial:
CT
Outside Diameter:
0.6170 - 0.6250 IN
Pack Type:
Box
Product Group:
Fasteners
Product Height:
6 in
Product Length:
7.25 in
Product Weight:
16.74 lbs
Product Width:
6.25 in
Sub Division:
Electrical-E H2
Tensile Strength:
150000 psi minimum
Thread Per Inch:
11
Yield Strength:
130000 psi minimum
Department:
Electrical
Product Subgroup:
Bolts
Product Type:
Hexagonal Bolt
Type2:
Hexagonal Bolt
Series:
G8HC and JG8HC
Product Finish:
Zinc
Product Details:
Hexagonal Bolt
Product Material:
Steel

Metallics G8HC58312 – Frequently Asked Questions

1) What thread pitch does the Metallics G8HC58312 5/8 inch hex bolt use, and will it take a standard 5/8-11 nut?
It's a 5/8-11 bolt, 11 threads per inch, which is the standard coarse (UNC) pitch for 5/8 inch diameter. Any 5/8-11 coarse nut or tapped hole mates with it. Measured shank diameter runs 0.6170 to 0.6250 inch.
2) How strong is a Grade 8 hex bolt compared to a Grade 5?
Grade 8 steel here is rated 150,000 psi minimum tensile and 130,000 psi minimum yield, with a hardness of Rockwell C33-39. That's the step up you take when a Grade 5 won't carry the load, which is why these get used in automotive and fleet work. The body is medium carbon steel, heat treated, per AISI 1021-1045.
3) What size wrench or socket do I need for this 5/8-11 Grade 8 hex bolt?
Head width across the flats measures 0.922 to 0.938 inch, so a 15/16 inch socket or wrench is the fit. Head height is 27/64 inch, worth knowing if you're working in a counterbore or tight clearance.
4) Is the Metallics G8HC58312 bolt coated for outdoor or damp use?
The finish is zinc plating over steel. That gives ordinary corrosion protection for indoor and sheltered outdoor work. For constant wet exposure, salt, or marine service, specify a stainless or hot dip galvanized fastener instead.
5) How many bolts come in a box, and can I buy just a few?
They ship as a box of 25 pieces, and 25 is the order minimum, so one box is the smallest buy. Metallics does offer other sizes and quantities in the G8HC and JG8HC series by request.
6) Does the Metallics G8HC58312 hex bolt meet Buy American and ARRA requirements for a government job?
It is flagged as both ARRA compliant and Buy American compliant, with country of origin China. If your contract's domestic sourcing clause is strict on origin rather than the ARRA designation, confirm that against your spec before committing the box.
7) How much does a box of 25 of these 5/8 inch Grade 8 bolts weigh for shipping?
A box of 25 comes in at 16.74 lbs. Useful if you're staging a pallet of fastener boxes or watching a per-package weight limit.
How fast can I get the Metallics G8HC58312 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 G8HC58312 come with a warranty?
Absolutely. The Metallics G8HC58312 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 G8HC58312?
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 G8HC58312 from ZenSupply?
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