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Bolts 3/8-16 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:
- 0.551 - 0.562 in.
- Fastener Height:
- 0.226 - 0.243
- 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:
- 4.57 in
- Product Length:
- 3 in
- Product Weight:
- 3.92 lbs
- Product Width:
- 3 in
- Sub Division:
- Electrical-E H2
- Thread Per Inch:
- 16
- 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 JBBH44 – Frequently Asked Questions
1) Is the Metallics JBBH44 hex bolt solid silicon bronze or just bronze plated?
Solid silicon bronze, not a plated steel bolt. The material is listed as silicon bronze to ASTM F468, and the bronze finish is the base metal itself. That matters for grounding and outdoor or marine work, where a plated fastener loses its coating and starts corroding at the threads.
2) What thread does the JBBH44 bolt take, and will a standard 3/8 nut thread onto it?
The JBBH44 is a 3/8 bolt with 16 threads per inch, cut to ANSI/ASME B1.1. Note that standard 3/8 coarse is 16 TPI, so a common 3/8-16 UNC nut or tapped hole will thread on. For galvanic reasons, pair it with a silicon bronze nut rather than plain steel.
3) Can I use silicon bronze hex bolts for grounding and electrical connections?
Yes, that is the intended use. Metallics lists the field application as the electrical, plumbing, heating and air conditioning industries. Silicon bronze is used for grounding clamps, water pipe bonds and damp or buried connections because it stays conductive and resists corrosion where zinc plated steel would fail.
4) Does the Metallics JBBH44 bolt meet Buy American or ARRA requirements for a federal job?
No. The JBBH44 is listed as not Buy American compliant and not ARRA compliant, with country of origin given as multiple. If your project carries a domestic sourcing clause, this part will not satisfy it and you will need a domestically produced silicon bronze bolt instead.
5) Will a 3/8-16 hex bolt fit my standard wrench and socket set?
Across the flats the hex head measures 0.551 to 0.562 inch, which is the standard 9/16 inch wrench size. Head height runs 0.226 to 0.243 inch. Dimensions follow ASME B18.2.1, so it drops into any standard hex socket or open end wrench without a special tool.
6) How many bolts come in a jar of Metallics JBBH44, and can I buy less than a full jar?
They ship in a 100 piece jar, and the jar is the minimum order unit, so 100 is the smallest quantity. The packed jar weighs 3.92 lbs. Metallics does offer other sizes and quantities in the BBH and JBBH hex bolt series on request.
7) Should I use a silicon bronze bolt or a stainless one on copper grounding hardware?
Silicon bronze is the closer match to copper and brass, so it keeps galvanic activity low at a ground clamp or a copper pipe bond. Stainless sits further from copper on the galvanic scale and is usually chosen for strength or general structural work rather than for conductive connections. The JBBH44 is a silicon bronze hex bolt built to ASTM F468, which is the bronze and copper alloy bolting standard.
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reach out to our support team for a return authorization or setup a return by following our return instructions.
Does the Metallics JBBH44 come with a warranty?
Absolutely. The Metallics JBBH44 is backed by a manufacturer’s warranty.
For full warranty terms, check the product documentation or Contact Us.
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