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Bolts 1/2-13 X 3/4 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:
- 0.736 - 0.750 in.
- Fastener Height:
- 0.302 - 0.323
- Fastener Length:
- 4-Mar
- Field Application:
- Electrical, Plumbing, Heating and Air Conditioning Industries
- Language Code:
- EN
- Material Standard:
- ASTM F468
- Neurspe:
- https://ideadigitalasset.com/DAMRoot/Original/10035/11237_ID-SPE-v1-ID-SPE-v1-Hex_Bolt_Silicon_Bronze.pdf
- 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:
- 8.11 lbs
- Product Width:
- 3.5 in
- Sub Division:
- Electrical-E H2
- Thread Per Inch:
- 13
- 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 JBBH81 – Frequently Asked Questions
1) Is the Metallics JBBH81 hex bolt solid silicon bronze or just bronze plated?
Solid silicon bronze, not a plating. The JBBH81 is made to ASTM F468, the standard covering nonferrous bolts and studs for general use, with a bronze finish. That matters for grounding work and for outdoor or wet locations where a plated steel bolt would eventually rust through the coating.
2) What thread does the 1/2-13 Metallics hex bolt take, and will it run into a standard 1/2 inch nut?
It is 1/2-13, meaning 13 threads per inch, cut to ANSI/ASME B1.1. That is standard 1/2 inch UNC coarse thread, so it mates with any off the shelf 1/2-13 nut or tapped hole. For galvanic reasons, pair it with a silicon bronze nut rather than plated steel when the joint is outdoors.
3) Can I use these silicon bronze hex bolts on a Buy American or ARRA funded job?
No. The JBBH81 is not Buy American compliant and is not ARRA compliant, and country of origin is listed as multiple. On a federally funded project with domestic sourcing requirements, you will need a domestically produced bolt instead.
4) Will the JBBH81 hex head clear a standard 3/4 inch wrench or socket?
Yes. The head measures 0.736 to 0.750 inch across the flats, so a 3/4 inch wrench or socket is the correct size. Head height runs 0.302 to 0.323 inch, which is the usual hex bolt head profile under ASME B18.2.1 and leaves little stack height above the surface.
5) How much usable grip does a 3/4 inch long 1/2-13 bronze bolt give me?
Very little. At 3/4 inch overall shank length it is meant for thin assemblies, clamps, lugs, and strap or channel connections where you are stacking maybe a quarter to a half inch of material plus a nut. If you are bolting through anything thicker, you want a longer length rather than this one.
6) Does the Metallics JBBH81 come loose or by the box, and what is the minimum order?
It ships as a jar of 100 pieces, and the jar is the minimum order unit, so you buy in multiples of 100. The filled jar weighs 8.11 lbs. Other sizes and quantities in the BBH and JBBH hex bolt series are available by request.
7) Is this a standard dimension hex bolt I can spec on a drawing?
Yes. Head and body dimensions follow ASME B18.2.1 for hex bolts and the thread follows ANSI/ASME B1.1, with material to ASTM F468. Those three are what a spec writer or inspector will ask for on a bronze fastener submittal.
8) What are silicon bronze hex bolts actually used for on an electrical or mechanical job?
Metallics lists the application as the electrical, plumbing, heating and air conditioning trades. In practice that means grounding and bonding connections, water and wastewater equipment, marine and coastal exposure, and any joint where you need corrosion resistance and reasonable conductivity in the fastener itself rather than a zinc plated steel bolt.
How fast can I get the Metallics JBBH81 delivered?
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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 JBBH81 come with a warranty?
Absolutely. The Metallics JBBH81 is backed by a manufacturer’s warranty.
For full warranty terms, check the product documentation or Contact Us.
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