Bolts 5/8-11 x 4-1/2 Hx Tap Blt St-zn (Box 25)
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:
- 27/64 in.
- Fastener Head Type:
- Hex
- Fastener Head Width:
- 0.906 - 0.938 in.
- Fastener Height:
- 0.378 - 0.444
- Fastener Length:
- 4/1/02
- Fastener Width:
- 1.033 - 1.083
- 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:
- 25
- Order Minimum Uom Imperial:
- CT
- Pack Type:
- Box
- Product Group:
- Fasteners
- Product Height:
- 7.25 in
- Product Length:
- 4.5 in
- Product Weight:
- 10.2 lbs
- Product Width:
- 4.5 in
- Sub Division:
- Electrical-E H2
- Tensile Strength:
- 60000 psi minimum
- Thread Per Inch:
- 11
- 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 HTB75 – Frequently Asked Questions
1) What thread size and pitch is the Metallics HTB75 hex tap bolt?
The HTB75 is a 5/8-11 bolt, so 5/8 inch diameter with 11 threads per inch, which is standard UNC coarse thread. Overall length is 4-1/2 inches, and unlike a hex cap screw with a plain shoulder, a tap bolt is threaded the full length, so it will thread into a tapped hole or a nut anywhere along the shank.
2) How strong is the Metallics HTB75 bolt, and is it a graded structural bolt?
Tensile strength is 60,000 psi minimum with a hardness of Rockwell B69 to B100. That puts it in the low-carbon, general-purpose class, which is what you want for conduit supports, strut, hangers, and equipment mounting. It is not a high-strength structural bolt, so if your drawing calls for a Grade 5 or Grade 8 bolt at a connection carrying structural load, specify that instead.
3) Is a zinc plated steel bolt OK outdoors or in a damp mechanical room?
The HTB75 is steel with a zinc finish, which handles indoor and sheltered conditions and incidental moisture. For sustained outdoor exposure, washdown areas, coastal sites, or anywhere in direct contact with weather, move to a stainless hex tap bolt instead. Metallics builds this same tap bolt line in 18-8 stainless as well as steel-zinc.
4) What size wrench or socket fits the head on this 5/8-11 hex tap bolt?
Head width across flats measures 0.906 to 0.938 inch, which is a 15/16 inch wrench or socket. Head height is 27/64 inch, so allow for that when you are figuring clearance under a strut, channel, or bracket flange.
5) How many bolts come in a box, and can I buy just a few?
The HTB75 ships as a box of 25, and 25 count is the order minimum, so it is sold by the box rather than the piece. Other sizes and quantities in the HTB series are available by request.
6) Does the Metallics HTB75 qualify for a Buy American or ARRA funded job?
The HTB75 is flagged ARRA compliant and Buy American compliant, with country of origin listed as China. On federally funded work the two can be read differently depending on which clause your contract carries, so match the flag your spec actually cites before you submit it.
7) Do nuts or washers come with the HTB75 bolts?
No. The box of 25 contains hex tap bolts only. If you are bolting through rather than into a tapped hole, order 5/8-11 hex nuts and 5/8 flat or lock washers separately.
8) What thread standard do these Metallics hex tap bolts conform to?
Threads are produced to IFI-199 (2014). Practically, that means the 5/8-11 thread mates with any standard 5/8-11 UNC nut, coupling, or tapped hole from another manufacturer.
9) How much does a box of 25 of these 5/8 inch bolts weigh for shipping?
A box of 25 comes in at 10.2 lbs, so roughly 6-1/2 ounces per bolt at the 4-1/2 inch length. Worth knowing if you are staging multiple boxes on a lift or a cart.
How fast can I get the Metallics HTB75 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 HTB75 come with a warranty?
Absolutely. The Metallics HTB75 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 HTB75?
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