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Bolts 3/4-10 x 2-1/2 HXBT St-zn (Box 50)
Additional Notes
- Other sizes and quantities available by request
Manufacturer Resources
Product Specs
- Arra Compliant:
- C
- Buy American Compliant:
- C
- Division:
- Electrical H1
- Fastener Head Height:
- 15/32 in.
- Fastener Head Type:
- Hex
- Fastener Head Width:
- 1.088 - 1.125 in.
- Fastener Height:
- 0.455 - 0.524
- Fastener Length:
- 2/1/02
- Fastener Width:
- 1.240 - 1.299
- Field Application:
- Electrical, Plumbing, Heating and Air Conditioning Industries
- Grade:
- 2
- Language Code:
- EN
- Neurspe:
- https://ideadigitalasset.com/DAMRoot/Original/10035/11237_ID-SPE-v1-ID-SPE-v1-Hex_Bolt_St-Zn_Galv.pdf
- Order Minimum Imperial:
- 50
- Order Minimum Uom Imperial:
- EA
- Outside Diameter:
- 0.729 - 0.768 IN
- Pack Type:
- Box
- Product Group:
- Fasteners
- Product Height:
- 6 in
- Product Length:
- 7.25 in
- Product Weight:
- 19.9 lbs
- Product Width:
- 6.25 in
- Sub Division:
- Electrical-E H2
- Thread Per Inch:
- 10
- Thread Standard:
- ASME B18.2.1-1996
- Department:
- Electrical
- Product Subgroup:
- Bolts
- Product Type:
- Hexagonal Bolt
- Type2:
- Hexagonal Bolt
- Series:
- BHC and JBHC
- Product Finish:
- Zinc
- Product Details:
- Hexagonal Bolt
- Product Material:
- Steel
Metallics BHC79 – Frequently Asked Questions
1) What thread does the Metallics BHC79 hex bolt take, and will a standard 3/4 inch nut fit it?
The BHC79 is a 3/4-10 hex bolt, meaning 3/4 inch diameter with 10 threads per inch, which is standard UNC coarse thread. Any 3/4-10 UNC nut or tapped hole mates with it. The threads are made to ASME B18.2.1-1996, the dimensional standard for square and hex bolts, so head and thread geometry match any other B18.2.1 3/4-10 bolt.
2) Is a Grade 2 zinc plated hex bolt strong enough for hanging electrical and mechanical supports?
Grade 2 is the standard low carbon steel grade for general support work, and that is what the BHC79 is. Metallics lists it for electrical, plumbing, heating and air conditioning work, so trapeze hangers, strut, pipe clamps and enclosure mounting are its intended use. If your drawing calls out Grade 5 or Grade 8 for a structural or seismic connection, this is not the bolt for that line item.
3) Does the Metallics BHC79 bolt meet Buy American and ARRA requirements for a government job?
Metallics flags the BHC79 as compliant for both Buy American and ARRA. Country of origin is listed as multiple, so if your specification requires documentation tied to a single named country, ask for the mill paperwork on the lot you receive.
4) What size wrench or socket do I need for a Metallics BHC79 3/4-10 hex bolt?
Head width across flats runs 1.088 to 1.125 inches, so a 1-1/8 inch wrench or socket is the one to grab. Head height is 15/32 inch, which matters if you are working in a shallow channel or under a strut clamp.
5) How are Metallics BHC79 bolts packaged, and is there a minimum order?
They ship as a box of 50, and 50 each is the order minimum, so you buy full boxes rather than loose pieces. Metallics notes other sizes and quantities can be had by request if 3/4-10 x 2-1/2 is not the length you need.
6) Is the BHC79 a full thread bolt, and how much grip length do I get at 2-1/2 inches?
The BHC79 is a 3/4-10 x 2-1/2 inch hex bolt, so the overall shank is 2-1/2 inches measured under the head. Subtract the thickness of what you are clamping plus the nut and washers to confirm you have enough thread engagement. Shank diameter is held to 0.729 to 0.768 inch, so it drops into a 13/16 inch clearance hole.
7) How much does a box of 50 Metallics BHC79 3/4-10 x 2-1/2 bolts weigh?
A box runs 19.9 lbs. Worth knowing if you are staging material on a lift or carrying several boxes up to a mechanical room, since a full pallet of these adds up fast.
How fast can I get the Metallics BHC79 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 BHC79 come with a warranty?
Absolutely. The Metallics BHC79 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 BHC79?
You can call, text, or email our expert support team for fast answers. We’re here to help with
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selection,
installation tips, and troubleshooting. Contact Us
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every order.
Our team is always ready to help you choose the right product for your project.