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Bolts 1/4-20 x 1-3/4 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:
- 1/3/04
- 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 BBH50 – Frequently Asked Questions
1) Why use a silicon bronze bolt like the Metallics BBH50 for grounding connections instead of steel?
Silicon bronze is the material called for on grounding and bonding hardware because it holds up in direct-burial and outdoor conditions and stays compatible with copper conductors and copper-alloy ground clamps, so you avoid the galvanic problems you get pairing steel with copper. The BBH50 is a 1/4-20 x 1-3/4 hex bolt in silicon bronze, bronze finish, made to ASTM F468 for nonferrous bolting material.
2) What thread does the Metallics BBH50 bolt have, and will it take a standard 1/4-20 nut?
It is a 1/4-20 thread, 20 threads per inch, cut to ANSI/ASME B1.1. Any standard 1/4-20 nut or tapped 1/4-20 hole will take it. For a ground connection, pair it with a bronze or silicon bronze nut rather than a plated steel one so the whole joint stays the same family of metal.
3) Does the Metallics BBH50 bolt meet Buy American or ARRA requirements for a federal job?
No. The BBH50 is not Buy American compliant and is not ARRA compliant, and country of origin is listed as multiple. If you are bidding 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) What size wrench or socket fits the Metallics BBH50 hex bolt head?
The hex head measures 0.428 to 0.438 inches across the flats, which is the standard 7/16 inch wrench size for a 1/4 inch bolt. Head height runs 0.150 to 0.163 inches. Head dimensions follow ASME B18.2.1, so it drives with ordinary hand tools already on the truck.
5) How many Metallics BBH50 bolts come in a box?
They ship 100 to a box, and 100 count is the order minimum, so this is a bulk buy rather than a per-piece pull. That suits an electrical contractor or MRO stockroom doing repeat ground rod and bonding work. Metallics lists other sizes and quantities by request.
6) Can I order the same silicon bronze hex bolt in a different length than 1-3/4 inch?
Yes. The BBH50 is one length in the Metallics BBH and JBBH bolt series, and other sizes and quantities are available by request. If your clamp stack or ground plate needs a shorter or longer grip, specify the length you need in the same 1/4-20 silicon bronze family.
7) Is the Metallics BBH50 a full hex bolt or a machine screw?
It is a hex head bolt, not a slotted or pan head machine screw. Head geometry is built to ASME B18.2.1, the dimensional standard for square and hex bolts and screws, so it seats and wrenches like any standard hex cap fastener of that size.
How fast can I get the Metallics BBH50 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 BBH50 come with a warranty?
Absolutely. The Metallics BBH50 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 BBH50?
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 BBH50 from ZenSupply?
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and
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every order.
Our team is always ready to help you choose the right product for your project.