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Additional Notes
- Other sizes and quantities available by request
Features
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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:
- 2
- Fastener Width:
- 0.620 - 0.650
- 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:
- 100
- 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:
- 3366 g
- Product Width:
- 114.3 MM
- Sub Division:
- Electrical-E H2
- Tensile Strength:
- 150000 psi minimum
- Thread Per Inch:
- 24
- 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 JG8HC241 – Frequently Asked Questions
1) Is the Metallics JG8HC241 a fine thread or coarse thread 3/8 bolt?
Fine thread. The JG8HC241 is a 3/8-24 hex bolt, 24 threads per inch, with a shank outside diameter of 0.3690 to 0.3750 inch. If the tapped hole or nut you are mating to is 3/8-16, this will not thread in; you need the coarse version instead.
2) What does Grade 8 get me over a Grade 5 hex bolt?
Strength. The JG8HC241 is Grade 8, rated 150,000 psi minimum tensile and 130,000 psi minimum yield, with hardness Rockwell C33-39. It is a medium carbon steel cap screw, heat treated, and is used in automotive and fleet work where a Grade 5 does not carry enough tensile. Grade 8 is harder and less forgiving of shock and over-torque than Grade 5, so match the nut grade accordingly.
3) How many bolts come in a jar, and can I buy fewer than 100?
These ship 100 to a jar, and 100 count is the order minimum, so the jar is the smallest unit. Metallics does make other sizes and quantities in this G8HC and JG8HC family available by request.
4) Is zinc plating on these Grade 8 bolts good enough for outdoor or wet use?
The JG8HC241 is steel with a zinc finish. Zinc plating handles indoor, dry, and sheltered conditions and gives moderate corrosion resistance, but it is not a marine or sustained-wet coating. For continuous exposure or washdown, look at a hot dip galvanized or stainless fastener instead, keeping in mind stainless will not give you Grade 8 strength.
5) Do these Metallics Grade 8 bolts meet Buy American or ARRA requirements on a government job?
Metallics flags the JG8HC241 as compliant for both Buy American and ARRA. Country of origin is listed as multiple, so if your contract needs a specific origin certificate for the lot you receive, that has to be confirmed against the shipment.
6) What steel are these cap screws made from?
Material standard is AISI 1021 through 1045, a medium carbon steel, heat treated to reach the Grade 8 hardness range of Rockwell C33-39.
How fast can I get the Metallics JG8HC241 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 JG8HC241 come with a warranty?
Absolutely. The Metallics JG8HC241 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 JG8HC241?
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installation tips, and troubleshooting. Contact Us
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