Metallics JG8HC32 Bolts 3/8-16...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$52.06
$1.93
Metallics JG8HC32 Bolts 3/8-16 x 3-1/2 G8 HXBT St-zn (Jar 50)

Metallics JG8HC32 Bolts 3/8-16 x 3-1/2 G8 HXBT St-zn (Jar 50)

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Model: JG8HC32
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In Stock (leaves warehouse same day if ordered before 3pm ET)

$52.06
$1.93
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Bolts 3/8-16 x 3-1/2 G8 HXBT St-zn (Jar 50)

  • 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:
4-Jan in.
Fastener Head Type:
Hex
Fastener Head Width:
0.551 - 0.562 in.
Fastener Height:
0.226 - 0.243
Fastener Length:
3/1/02
Fastener Width:
0.620 - 0.650
Grade:
8
Hardness:
Rockwell C33-39
Language Code:
EN
Material Standard:
AISI 1021 - 1045
Order Minimum Imperial:
25
Order Minimum Uom Imperial:
CT
Outside Diameter:
0.3690 - 0.3750 IN
Pack Type:
Jar
Product Group:
Fasteners
Product Height:
7.25 in
Product Length:
4.5 in
Product Weight:
2771 g
Product Width:
114.3 MM
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 JG8HC32 – Frequently Asked Questions

1) Is the Metallics JG8HC32 bolt strong enough to replace a Grade 5 bolt on a fleet repair?
Yes. The JG8HC32 is a Grade 8 hex cap screw rated at 150,000 psi minimum tensile and 130,000 psi minimum yield, which is why it gets used in automotive and fleet work where a Grade 5 does not carry enough load. It is medium carbon steel, heat treated, with a hardness of Rockwell C33-39. Going the other direction is not safe practice: a Grade 5 does not substitute for a Grade 8 on a joint engineered for it.
2) What thread does the 3/8-16 Metallics hex bolt take, and will a standard 3/8 coarse nut thread onto it?
It runs 16 threads per inch on a 3/8 inch diameter, which is standard 3/8-16 UNC coarse thread. Any 3/8-16 coarse nut or tapped hole will take it. Measured shank diameter is 0.3690 to 0.3750 inch. For a Grade 8 bolt, pair it with a matching grade nut (Grade 8 or Grade C) so the nut is not the weak link.
3) What size wrench or socket fits the head on this Grade 8 hex bolt?
Across the flats the hex head measures 0.551 to 0.562 inch, so a 9/16 inch socket or wrench is the fit. Head type is a plain hex cap screw head, no flange and no washer face callout.
4) How many bolts come in a jar of Metallics JG8HC32, and is there a minimum order?
Each jar holds 50 of the 3/8-16 x 3-1/2 inch Grade 8 hex bolts. The jar pack is the shop-friendly format, it stays closed on a shelf or in a service truck. Minimum order is 25 count.
5) Will the zinc plating on these Grade 8 bolts hold up outdoors?
The finish is zinc plating over steel, which gives light corrosion protection for indoor, enclosed, and sheltered work and for general equipment service. It is not a marine or constantly wet duty coating. In standing moisture or a washdown area, plan on a hot dip galvanized or stainless fastener instead, keeping in mind that stainless will not match Grade 8 strength.
6) Do Metallics JG8HC32 bolts qualify for a Buy American or ARRA job?
Both the Buy American and ARRA fields on the JG8HC32 are flagged compliant, and country of origin is listed as China. If your contract language requires domestic melt and manufacture rather than a compliance flag, verify against the specific clause on your project before you submit.
7) What steel are these Metallics Grade 8 cap screws made from?
Material standard is AISI 1021 to 1045 medium carbon steel, quenched and tempered to reach the Grade 8 property class at Rockwell C33-39. That matters for two things on the job: do not weld or reheat these, since heat destroys the heat treatment and the strength with it, and do not re-use them on a critical joint once they have been torqued to yield.
8) Can I get this Metallics Grade 8 hex bolt in a different length or a bigger pack?
Yes. JG8HC32 is the 3/8-16 x 3-1/2 inch size in a 50 piece jar, and other sizes and quantities in the G8HC and JG8HC series are available by request. The G8HC and JG8HC designations are the same Grade 8 hex cap screw line, so you can standardize a shop on one series across lengths.
How fast can I get the Metallics JG8HC32 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 JG8HC32 come with a warranty?
Absolutely. The Metallics JG8HC32 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 JG8HC32?
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 JG8HC32 from ZenSupply?
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