You may also like
Bolts 3/4-10 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 Length:
- 4
- Language Code:
- EN
- Material Standard:
- ASTM F468
- Order Minimum Imperial:
- 50
- Order Minimum Uom Imperial:
- EA
- Pack Type:
- Box
- Product Group:
- Fasteners
- Sub Division:
- Electrical-E H2
- Thread Per Inch:
- 10
- 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 BBH90 – Frequently Asked Questions
1) What size and thread is the Metallics BBH90 silicon bronze hex bolt?
The BBH90 is a 3/4-10 hex bolt, 4 inches long. The 10 threads per inch is the coarse UNC pitch for 3/4 inch diameter, cut to ANSI/ASME B1.1, so it takes a standard 3/4-10 hex nut. Head and body dimensions follow ASME B18.2.1.
2) Is a silicon bronze bolt the right choice for grounding and buried electrical connections?
That is exactly what silicon bronze hardware is used for. The BBH90 is silicon bronze to ASTM F468, which is the spec covering nonferrous bolting, and bronze is the standard material for ground rod clamps, grounding plates, and direct-burial or damp-location electrical connections where a plated steel bolt would corrode and lose continuity. If the connection is dry indoor structural work with no grounding or corrosion concern, a plain steel or galvanized 3/4-10 bolt does the job for less.
3) Do Metallics BBH90 bolts qualify for a Buy American or ARRA funded project?
No. The BBH90 is not Buy American compliant and is not ARRA compliant, with country of origin listed as multiple. On a federally funded job with domestic sourcing requirements you need a domestically produced silicon bronze bolt instead.
4) How many bolts come in a jar of Metallics BBH90, and can I buy fewer?
Quantity is 50 bolts, and 50 each is the order minimum, so it is sold as the full pack rather than piece count. Other sizes and quantities can be arranged by request if 3/4-10 x 4 in a 50 pack is not what the job needs.
5) What is the usable grip with a 4 inch silicon bronze hex bolt like the BBH90?
Overall length is 4 inches measured from under the hex head to the point, which is how ASME B18.2.1 dimensions a hex bolt. Subtract your stack of plate, clamp body, washers and nut thickness from that 4 inches to check you have thread left to engage. For thicker or thinner assemblies, other lengths in the BBH and JBBH series are available by request.
6) Does the BBH90 come with a nut and washers?
No. It ships as bolts only, 50 to a pack. Order matching 3/4-10 silicon bronze nuts and bronze washers separately if you need the full set, and keep them in bronze rather than steel so you do not create a dissimilar metal joint at a grounding connection.
7) Will these bronze bolts match my existing bronze grounding hardware finish?
Finish is bronze, and it is not a coating, the bolt is solid silicon bronze throughout. It will weather and darken the same way bronze lugs, clamps and plates do, so it blends with existing bronze grounding hardware rather than standing out like a zinc or hot dip galvanized bolt would.
How fast can I get the Metallics BBH90 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 BBH90 come with a warranty?
Absolutely. The Metallics BBH90 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 BBH90?
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 BBH90 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.