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Bolts 3/8-16 X 4 Hxbt Sbr (Jar 50)
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
- 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:
- 50
- Order Minimum Uom Imperial:
- EA
- Pack Type:
- Jar
- Product Group:
- Fasteners
- Product Height:
- 7.25 in
- Product Length:
- 4.5 in
- Product Weight:
- 6.81 lbs
- Product Width:
- 4.5 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 JBBH28 – Frequently Asked Questions
1) What thread does the Metallics JBBH28 silicon bronze hex bolt take, and will standard 3/8-16 nuts fit it?
The JBBH28 is a 3/8 inch diameter bolt with 16 threads per inch, cut to ANSI/ASME B1.1, so it mates with any standard 3/8-16 UNC nut or tapped hole. Overall length is 4 inches. Pair it with silicon bronze nuts and washers if you want to keep the whole joint on one alloy and avoid galvanic issues.
2) Why use a silicon bronze hex bolt instead of stainless or galvanized steel?
Silicon bronze is the choice where corrosion resistance and electrical conductivity both matter, which is why the JBBH28 is aimed at electrical, plumbing, and HVAC work. It is commonly specified for grounding and bonding connections, marine and wet locations, and for bolting to bronze or copper hardware where a steel fastener would set up galvanic corrosion. The bolt is made to ASTM F468, the standard covering nonferrous bolts for general use.
3) Does the Metallics JBBH28 bolt meet Buy American or ARRA requirements for a government job?
No. The JBBH28 is not Buy American compliant and is not ARRA compliant, and country of origin is listed as multiple. If your contract carries a domestic sourcing clause, this bolt will not satisfy it.
4) How many bolts come in the Metallics JBBH28 jar?
It ships as a jar of 50 bolts, with a 50 each order minimum, so one jar is the smallest buy. Total jar weight is 6.81 lbs. The jar packaging keeps loose bronze hardware together on a service truck or in a shop bin.
5) What finish is the JBBH28 bolt, and will it match bronze fittings already installed?
The finish is bronze, and it is bronze all the way through rather than a plating, since the bolt is solid silicon bronze. Nothing to chip or wear off at the wrench flats, and it weathers to a darker patina like the bronze hardware around it.
How fast can I get the Metallics JBBH28 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 JBBH28 come with a warranty?
Absolutely. The Metallics JBBH28 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 JBBH28?
You can call, text, or email our expert support team for fast answers. We’re here to help with
product
selection,
installation tips, and troubleshooting. Contact Us
Why buy the Metallics JBBH28 from ZenSupply?
ZenSupply makes it easy to get the commercial door hardware you need—fast shipping, expert support,
and
rewards on
every order.
Our team is always ready to help you choose the right product for your project.