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Bolts 5/16-18 x 2-3/4 HXBT Br (Jar 100)
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 Color:
- Brass
- Fastener Head Height:
- 13/64 in.
- Fastener Head Type:
- Hex
- Fastener Head Width:
- 0.489 - 0.500 in.
- Fastener Height:
- 0.195 - 0.211
- Fastener Length:
- 2/3/04
- Fastener Width:
- 0.557 - 0.577
- Language Code:
- EN
- Order Minimum Imperial:
- 100
- Order Minimum Uom Imperial:
- CT
- Outside Diameter:
- 0.3065 - 0.3125 IN
- Pack Type:
- Jar
- Product Group:
- Fasteners
- Product Height:
- 7.25 in
- Product Length:
- 4.5 in
- Product Weight:
- 2685 g
- Product Width:
- 114.3 MM
- Sub Division:
- Electrical-E H2
- Thread Per Inch:
- 18
- Wrenching Height:
- 0.14
- Department:
- Electrical
- Product Subgroup:
- Bolts
- Product Type:
- Hexagonal Bolt
- Type2:
- Hexagonal Bolt
- Series:
- JBRHC
- Product Details:
- Hexagonal Bolt
- Product Material:
- Brass
Metallics JBRHC57 – Frequently Asked Questions
1) Is the Metallics JBRHC57 bolt solid brass or just brass plated?
Solid brass. The Metallics JBRHC57 hex bolt lists brass as the product material, not a coating over steel, and the head color is brass as well. That matters on grounding and bonding work and in damp or corrosive locations where a plated steel bolt would rust through. It also means you should not treat it as a structural steel grade fastener.
2) What thread does the 5/16 Metallics brass hex bolt use, and will it take a standard 5/16-18 nut?
It is 5/16-18, meaning 18 threads per inch, which is standard coarse UNC for a 5/16 diameter. Measured shank outside diameter runs 0.3065 to 0.3125 inch. Any standard 5/16-18 nut or tapped 5/16-18 hole will accept it, and brass nuts are the usual pairing when you want the whole joint non-ferrous.
3) What wrench or socket size fits the hex head on the JBRHC57 bolt?
The hex head measures 0.489 to 0.500 inch across the flats, so a 1/2 inch wrench or socket is the fit. Head height is 13/64 inch with a wrenching height of 0.14 inch, so keep the socket fully seated. Brass heads round off easier than steel, so a six point socket is the better choice over an open end wrench.
4) Does the Metallics JBRHC57 brass bolt qualify for Buy American or ARRA funded jobs?
The record flags it as compliant for both Buy American and ARRA, while country of origin is listed as China. On federally funded work the compliance flag is what your submittal package needs, but verify against the specific clause cited in your contract, because domestic content rules differ between Buy American Act, BABA, and ARRA projects.
5) Can I use a brass hex bolt instead of a steel one for grounding and bonding connections?
Brass is the common non-ferrous choice for bonding and grounding hardware because it will not rust in place and it stays conductive, and this bolt is solid brass rather than plated. The tradeoff is strength: brass is softer than a Grade 5 or Grade 8 steel bolt, so do not substitute it where a structural or high torque steel fastener is specified. Use it for electrical connections, bus and lug work, and corrosion sensitive assemblies.
6) What is the exact part number to order the Metallics 5/16-18 x 2-3/4 brass hex bolt?
Order it as Metallics JBRHC57, part of the JBRHC brass hex bolt series. That number covers the 5/16-18 x 2-3/4 brass hex bolt in a 100 count jar. Adjacent numbers in the same series cover the other diameters and lengths.
How fast can I get the Metallics JBRHC57 delivered?
Most orders ship the same day from our distribution partners, with quick delivery throughout the
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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 JBRHC57 come with a warranty?
Absolutely. The Metallics JBRHC57 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 JBRHC57?
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installation tips, and troubleshooting. Contact Us
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