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Bolts 5/16-18 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:
- 0.489 - 0.500 in.
- Fastener Height:
- 0.195 - 0.211
- 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:
- 7.25 in
- Product Length:
- 4.5 in
- Product Weight:
- 2.6 lbs
- Product Width:
- 4.5 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 JBBH42 – Frequently Asked Questions
1) What thread does the Metallics JBBH42 bolt take, and will it mate with a standard 5/16-18 nut?
The JBBH42 is a 5/16-18 hex bolt, 18 threads per inch, cut to ANSI/ASME B1.1. That is standard Unified coarse 5/16, so any off-the-shelf 5/16-18 nut or tapped 5/16-18 hole will take it. Pair it with a silicon bronze nut if you want to keep the whole joint on one alloy.
2) Is silicon bronze the right bolt for outdoor or wet grounding and marine work?
Silicon bronze is the reason to buy this one. The JBBH42 is solid silicon bronze with a bronze finish, made to ASTM F468 (the standard covering nonferrous bolting for corrosive service), so it holds up in damp, salt-air, and buried or exposed grounding applications where a plated steel bolt rusts out. It is also the usual choice where you want the fastener to be electrically compatible with bronze or copper grounding hardware rather than setting up a galvanic couple with steel.
3) Will a 3/4 inch long bolt be long enough for my application?
At 3/4 inch of length under the head, the JBBH42 suits thin stack-ups: strut, channel, a bonding lug onto a bracket, or clamping a conductor to a pad. Add up your material thickness plus the nut and a washer and you need to come in under 3/4 inch. Thicker assemblies need a longer bolt from the same BBH and JBBH series rather than this one.
4) Does the Metallics JBBH42 bolt qualify for a Buy American or ARRA-funded job?
No. The JBBH42 is not Buy American compliant and is not ARRA compliant, and its country of origin is listed as multiple. If you are bidding federally funded work with domestic sourcing requirements, this silicon bronze hex bolt will not satisfy them and you need a domestically produced equivalent.
5) What are the hex head dimensions on the JBBH42, and what wrench size do I need?
Head width across flats runs 0.489 to 0.500 inches and head height is 0.195 to 0.211 inches, dimensioned to ASME B18.2.1. That half-inch across flats means a 1/2 inch wrench or socket. Worth knowing before you work in a tight enclosure or box, since the head will need roughly that much swing clearance.
6) How many bolts come in a jar of Metallics JBBH42, and can I buy fewer?
They ship as a jar of 100. The order minimum is one jar of 100 pieces, so 100 is the smallest buy. Metallics also makes other sizes and quantities in the BBH and JBBH series by request if 5/16-18 x 3/4 is not the length you need.
7) What trades actually use these silicon bronze hex bolts?
Metallics lists the field application as the electrical, plumbing, heating and air conditioning industries. In practice that means grounding and bonding connections, hanger and support assembly, and any mechanical joint where corrosion or dissimilar-metal contact is the concern. Electrical contractors buy them by the jar for bonding work; mechanical trades use them where a steel bolt would corrode against copper or bronze.
8) How much does a jar of 100 of these 5/16-18 bronze bolts weigh for shipping?
A jar of 100 comes in at 2.6 lbs. Useful if you are consolidating a pallet or watching parcel weight on a multi-jar order.
How fast can I get the Metallics JBBH42 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 JBBH42 come with a warranty?
Absolutely. The Metallics JBBH42 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 JBBH42?
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