Metallics G8HC346 Bolts 3/4-16...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$65.21
$21.21
Metallics G8HC346 Bolts 3/4-16 X 4 G8 Hxbt St-zn (Box 25)

Metallics G8HC346 Bolts 3/4-16 X 4 G8 Hxbt St-zn (Box 25)

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Model: G8HC346
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In Stock (leaves warehouse same day if ordered before 3pm ET)

$65.21
$21.21
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Bolts 3/4-16 X 4 G8 Hxbt St-zn (Box 25)

  • 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

  • Additional Notes

    • Other sizes and quantities available by request

Manufacturer Resources

Product Specs

Arra Compliant:
C
Buy American Compliant:
C
Division:
Electrical H1
Fastener Head Height:
2-Jan in.
Fastener Head Type:
Hex
Fastener Head Width:
1.100 - 1.125 in.
Fastener Height:
0.455 - 0.483
Fastener Length:
4
Fastener Width:
1.240 - 1.299
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:
0.7410 - 0.7500 IN
Pack Type:
Box
Product Group:
Fasteners
Product Height:
3.25 in
Product Length:
7.25 in
Product Weight:
15.19 lbs
Product Width:
6.75 in
Sub Division:
Electrical-E H2
Tensile Strength:
150000 psi minimum
Thread Per Inch:
16
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 G8HC346 – Frequently Asked Questions

1) Is the Metallics G8HC346 bolt a fine thread or coarse thread 3/4 inch bolt?
Fine thread. The G8HC346 is a 3/4-16, meaning 16 threads per inch, so it mates with 3/4-16 fine thread nuts and tapped holes only. A coarse 3/4-10 nut will not thread onto it. Shank diameter measures 0.7410 to 0.7500 inch.
2) What is the tensile strength of a Grade 8 hex bolt like the Metallics G8HC346?
150,000 psi minimum tensile with a 130,000 psi minimum yield. Hardness runs Rockwell C33-39. That is the step up from Grade 5, which is why these get specified on automotive, fleet, and heavy equipment work where a Grade 5 will not carry the load.
3) Is the Metallics G8HC346 bolt threaded all the way to the head?
No. The G8HC346 is a 4 inch long cap screw with a partially threaded body, so there is an unthreaded grip length under the head. If your joint needs thread engagement right up to the bearing surface, specify a fully threaded tap bolt instead.
4) Does the zinc plating on these Grade 8 bolts hold up outdoors?
The finish is zinc plating over steel, which handles indoor, enclosed, and light exterior exposure. For sustained weather, marine, or wash-down service, zinc plating is not the right coating and you want hot dip galvanized or stainless. Note that Grade 8 strength is not available in standard stainless, so a coating change may mean a strength change.
5) How many bolts come in a box of Metallics G8HC346, and can I buy fewer?
These ship as a box of 25, and 25 is the order minimum. Metallics does list other sizes and quantities in the G8HC and JG8HC series on request if 25 of a 3/4-16 x 4 is not what your job needs.
6) Are Metallics G8HC346 bolts Buy American or ARRA compliant for a government job?
Both the ARRA and Buy American fields on the G8HC346 are flagged C, and country of origin is China. For a federally funded project with a domestic sourcing requirement, verify that flag against your contract's specific clause before you commit the material.
7) What steel are Metallics Grade 8 hex cap screws made from?
Medium carbon steel in the AISI 1021 to 1045 range, quenched and tempered to reach Grade 8 properties. That heat treatment is what gets it to Rockwell C33-39 hardness, and it also means you should not weld, re-heat, or hot-bend these bolts, since doing so destroys the temper.
8) How much does a box of 25 of these 3/4-16 x 4 Grade 8 bolts weigh?
15.19 lbs for the box of 25. Worth knowing if you are hand-carrying several boxes up to a roof or mezzanine, or figuring freight on a bulk fastener order.
How fast can I get the Metallics G8HC346 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 G8HC346 come with a warranty?
Absolutely. The Metallics G8HC346 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 G8HC346?
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 G8HC346 from ZenSupply?
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