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Bolts 1/4-20 x 1-1/2 Hx Tap Blt St-zn (Box 2500)
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:
- Nov-64 in.
- Fastener Head Type:
- Hex
- Fastener Head Width:
- 0.425 - 0.438 in.
- Fastener Height:
- 0.150 - 0.188
- Fastener Length:
- 1/1/02
- Fastener Width:
- 0.484 - 0.505
- Hardness:
- Rockwell B69-B100
- Language Code:
- EN
- Neurspe:
- https://ideadigitalasset.com/DAMRoot/Original/10035/11237_ID-SPE-v1-ID-SPE-v1-Hex_Tap_Bolt_St-Zn_and_18-8_SS.pdf
- Order Minimum Imperial:
- 2500
- Order Minimum Uom Imperial:
- TH
- Pack Type:
- Box
- Product Group:
- Fasteners
- Product Height:
- 6.13 in
- Product Length:
- 9 in
- Product Weight:
- 53.11 lbs
- Product Width:
- 9 in
- Sub Division:
- Electrical-E H2
- Tensile Strength:
- 60000 psi minimum
- Thread Per Inch:
- 20
- Thread Standard:
- IFI-199 (2014)
- Department:
- Electrical
- Product Subgroup:
- Bolts
- Product Type:
- Hexagonal Tap Bolt
- Type2:
- Hexagonal Tap Bolt
- Series:
- HTB, JHTB, and JSHTB
- Product Finish:
- Zinc
- Product Details:
- Hexagonal Tap Bolt
- Product Material:
- Steel
Metallics HTB3B – Frequently Asked Questions
1) Is the Metallics HTB3B rated strong enough for electrical strut and hanger work, and is it OK outdoors?
Tensile strength is 60,000 psi minimum with a hardness of Rockwell B69 to B100, which is the common low carbon steel grade used for general strut, hanger, and enclosure mounting rather than a structural high strength bolt. The finish is zinc plated steel, which suits dry interior and sheltered locations. For sustained wet, washdown, or coastal exposure, go to stainless; zinc plating is a sacrificial coating, not a marine one.
2) What wrench or socket size fits the head on the Metallics HTB3B tap bolt?
Head width across flats runs 0.425 to 0.438 inch, which is a 7/16 inch wrench or socket. Across corners the head measures 0.484 to 0.505 inch, so plan clearance around the bolt accordingly in tight strut or enclosure work.
3) How many bolts come in a box of Metallics HTB3B, and can I buy a smaller quantity?
HTB3B ships as a box of 2,500 bolts, and 2,500 is the order minimum, so it is a bulk pack aimed at shops and job stock rather than a handful for one install. Metallics offers other sizes and quantities by request if 1/4-20 x 1-1/2 in a 2,500 box is not the break you need.
4) Does the Metallics HTB3B hex tap bolt satisfy Buy American or ARRA requirements on a public project?
The HTB3B is flagged compliant for both ARRA and Buy American in Metallics' product data, while country of origin is listed as China. On a federally funded job those two facts need to be reconciled against your specific contract language, since compliance clauses differ between ARRA, the Buy American Act, and Build America Buy America.
5) What is the difference between a hex tap bolt and a regular hex cap screw for mounting electrical gear?
A tap bolt like the HTB3B is threaded all the way to the head, where a hex cap screw has a plain shank under part of its length. Full thread is what you want when the bolt is turning into a tapped hole, a strut channel nut, or a threaded boss and you need engagement regardless of how deep it sits. A partly threaded cap screw is the better pick when you are clamping a stack through a clearance hole and want the unthreaded body taking shear. For 1/4-20 at 1-1/2 inch in zinc plated steel, the tap bolt covers both cases in practice.
6) I need stainless instead of zinc plated 1/4-20 tap bolts. Does Metallics make that?
Metallics covers hex tap bolts in both zinc plated steel and 18-8 stainless across its HTB, JHTB, and JSHTB series; HTB3B itself is the zinc plated steel version. If the application is wet, chemically exposed, or dissimilar metal sensitive, ask for the stainless equivalent in the same 1/4-20 x 1-1/2 size.
7) How heavy is a full box of 2,500 Metallics HTB3B tap bolts, and what size carton is it?
A full box runs 53.11 lbs and measures 9 inches long by 9 inches wide by 6.13 inches high. Worth knowing before you send it up a ladder or plan shelf space on the truck.
How fast can I get the Metallics HTB3B delivered?
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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 HTB3B come with a warranty?
Absolutely. The Metallics HTB3B 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 HTB3B?
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