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Bolts 5/16-18 x 3-1/2 HXBT Sbr (Jar 100)
Additional Notes
- Other sizes and quantities available by request
Manufacturer Resources
Product Specs
- Arra Compliant:
- N
- Buy American Compliant:
- No
- Dimensional Standard:
- ASME B18.2.1
- Division:
- Electrical H1
- Fastener Head Type:
- Hex
- Fastener Head Width:
- 0.489 - 0.500 in.
- Fastener Height:
- 0.195 - 0.211
- Fastener Length:
- 3/1/02
- Field Application:
- Electrical, Plumbing, Heating and Air Conditioning Industries
- Language Code:
- EN
- Material Standard:
- ASTM F468
- Order Minimum Imperial:
- 100
- Order Minimum Uom Imperial:
- JR
- Pack Type:
- Jar
- Product Group:
- Fasteners
- Product Height:
- 5.75 in
- Product Length:
- 3.5 in
- Product Weight:
- 8.3 lbs
- Product Width:
- 3.5 in
- Sub Division:
- Electrical-E H2
- Thread Per Inch:
- 18
- Thread Standard:
- ANSI/ASME B1.1
- Department:
- Electrical
- Product Subgroup:
- Bolts
- Product Type:
- Hexagonal Bolt
- Type2:
- Hexagonal Bolt
- Series:
- BBH and JBBH
- Product Finish:
- Bronze
- Product Details:
- Hexagonal Bolt
- Product Material:
- Silicon Bronze
Metallics JBBH17 – Frequently Asked Questions
1) What thread does the Metallics JBBH17 hex bolt take, and will a standard 5/16 nut fit it?
The JBBH17 is a 5/16-18 hex bolt, 18 threads per inch, cut to ANSI/ASME B1.1. That is standard 5/16 coarse thread, so any standard 5/16-18 nut or tapped 5/16-18 hole will take it. For a bronze installation, pair it with a silicon bronze nut so you are not mixing metals in the joint.
2) Is the JBBH17 bolt solid bronze or just bronze plated?
Solid silicon bronze, with a bronze finish, made to ASTM F468 for nonferrous bolting material. It isn't a plated steel bolt, so there's no coating to wear through or scratch off at the wrench flats, which is why it's used where corrosion resistance has to last the life of the joint.
3) Why use a silicon bronze bolt instead of galvanized steel for a grounding or outdoor electrical connection?
Silicon bronze is specified where you need corrosion resistance and electrical conductivity in the same fastener, and where bolting to bronze or copper hardware would set up galvanic corrosion with a steel bolt. The JBBH17 is built for the electrical, plumbing, and HVAC trades for exactly that reason. Galvanized steel is cheaper and stronger in tension, so it stays the choice for dry structural work; bronze is the choice at ground rod clamps, copper bus, buried connections, and wet or marine locations.
4) Does the Metallics JBBH17 meet Buy American or ARRA requirements for a government job?
No. The JBBH17 bronze hex bolt is not Buy American compliant and is not ARRA compliant, and country of origin is listed as multiple. If your specification carries a domestic-sourcing clause, this part won't satisfy it and you'll need a domestically manufactured bronze bolt instead.
5) Will a standard 1/2 inch wrench or socket fit the head of this 5/16-18 bronze bolt?
Yes. The hex head measures 0.489 to 0.500 inch across the flats, so a 1/2 inch wrench or socket is the right tool. Head height runs 0.195 to 0.211 inch. The head dimensions follow ASME B18.2.1, so it drives like any other standard 5/16 hex bolt.
6) How many bolts come in a jar of Metallics JBBH17, and can I buy fewer?
It ships as a jar of 100, and the jar is the minimum order unit, so 100 pieces is the smallest quantity. Metallics does make other lengths and pack quantities in the BBH and JBBH bronze hex bolt line by request if 100 of the 3-1/2 inch isn't what the job needs.
7) Are nuts and washers included with the JBBH17 jar?
No. The jar contains 100 of the 5/16-18 x 3-1/2 hex bolts only. Nuts and washers are ordered separately, and for a bronze joint you want silicon bronze nuts and washers in the same 5/16 size so the whole assembly stays one metal.
8) How much does a jar of 100 of these bronze hex bolts weigh for shipping?
8.3 lbs for the jar of 100. Worth knowing if you are ordering several jars to a jobsite rather than a shop.
How fast can I get the Metallics JBBH17 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 JBBH17 come with a warranty?
Absolutely. The Metallics JBBH17 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 JBBH17?
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