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Bolts 1/4-20 x 2-3/4 HXBT Sbr (Box 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:
- 0.428 - 0.438 in.
- Fastener Height:
- 0.150 - 0.163
- Fastener Length:
- 2/3/04
- Language Code:
- EN
- Material Standard:
- ASTM F468
- Order Minimum Imperial:
- 100
- Order Minimum Uom Imperial:
- CT
- Pack Type:
- Box
- Product Group:
- Fasteners
- Sub Division:
- Electrical-E H2
- Thread Per Inch:
- 20
- 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 BBH52 – Frequently Asked Questions
1) What material is the Metallics BBH52 1/4-20 hex bolt made from, and why would I use it for grounding work?
The BBH52 is silicon bronze, made to ASTM F468. Silicon bronze is the standard choice for grounding and bonding connections because it holds up against corrosion in direct burial and outdoor service and stays electrically compatible with copper conductors and bronze ground clamps, so you avoid the galvanic problems you get mixing steel fasteners with copper.
2) Will a standard 1/4 inch nut and wrench fit the Metallics BBH52 bolt?
Yes. The BBH52 is a 1/4-20 thread, 20 threads per inch, cut to ANSI/ASME B1.1, so any standard 1/4-20 UNC nut threads on. The hex head measures 0.428 to 0.438 inch across the flats, which takes a 7/16 inch wrench or socket. Head height runs 0.150 to 0.163 inch. Dimensions follow ASME B18.2.1.
3) Does the Metallics BBH52 silicon bronze bolt meet Buy American or ARRA requirements for a government job?
No. The BBH52 is not Buy American compliant and is not ARRA compliant, and its country of origin is listed as multiple. If you are buying for a federally funded project with domestic sourcing language in the spec, this bolt will not satisfy it and you need a domestically produced silicon bronze fastener instead.
4) How many bolts come in a box of Metallics BBH52, and can I buy fewer?
The BBH52 ships as a box of 100, and 100 count is the order minimum, so it is sold by the full box rather than loose pieces. Metallics notes other sizes and quantities in the BBH and JBBH series are available by request.
5) Are nuts or washers included with the Metallics BBH52 hex bolts?
The box of 100 is bolts only. Hex nuts and washers are separate line items, so order matching 1/4-20 silicon bronze nuts and bronze washers if your connection needs them, otherwise you end up with a box of bolts and nothing to thread onto them.
6) What is the finish on the Metallics BBH52 bolt, is it plated?
Bronze finish, and it is not a plating. The bolt is solid silicon bronze all the way through, so the corrosion resistance does not depend on a coating that can be scraped off during installation. It will weather to a darker patina outdoors.
How fast can I get the Metallics BBH52 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 BBH52 come with a warranty?
Absolutely. The Metallics BBH52 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 BBH52?
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 BBH52 from ZenSupply?
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and
rewards on
every order.
Our team is always ready to help you choose the right product for your project.