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Bolts 3/8-16 x 3/4 Hx Tap Blt St-zn (Box 1000)
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:
- 4-Jan in.
- Fastener Head Type:
- Hex
- Fastener Head Width:
- 0.544 - 0.562 in.
- Fastener Height:
- 0.226 - 0.268
- Fastener Length:
- 4-Mar
- Fastener Width:
- 0.620 - 0.650
- 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:
- 1000
- Order Minimum Uom Imperial:
- TH
- Pack Type:
- Box
- Product Group:
- Fasteners
- Product Height:
- 6 in
- Product Length:
- 7.25 in
- Product Weight:
- 29.98 lbs
- Product Width:
- 6.25 in
- Sub Division:
- Electrical-E H2
- Tensile Strength:
- 60000 psi minimum
- Thread Per Inch:
- 16
- 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 HTB44M – Frequently Asked Questions
1) Is the Metallics HTB44M a full-thread 3/8-16 bolt, and what does a tap bolt mean here?
The HTB44M is a 3/8-16 x 3/4 hex tap bolt, which means it is threaded the full length of the shank rather than having a plain grip section. That is what you want when you are threading into a tapped hole, a channel nut, or a strut insert and need every bit of the short 3/4 inch length engaged. Thread pitch is 16 threads per inch, the standard UNC coarse pitch for 3/8 diameter.
2) Can I use these zinc plated steel bolts outdoors or in a damp mechanical room?
The HTB44M is carbon steel with a zinc plated finish, which handles indoor, damp interior, and sheltered exterior service. For direct weather exposure, coastal air, wash-down areas, or anything chemically aggressive, go to the 18-8 stainless version of the hex tap bolt instead. Zinc plating is a sacrificial coating, not a stainless substitute.
3) What grade strength are these Metallics hex tap bolts, and are they strong enough for structural steel connections?
Rated at 60,000 psi minimum tensile with a hardness of Rockwell B69 to B100. That is commercial low carbon bolt strength, fine for strut, hangers, enclosure mounting, raceway supports, and general electrical anchoring. It is not a Grade 5 or Grade 8 bolt, so do not substitute it where a drawing calls out a higher grade for a structural or high-load joint.
4) How many bolts come in a box of Metallics HTB44M, and can I buy a smaller quantity?
These ship as a box of 1,000, and 1,000 is the order minimum. Metallics does make the hex tap bolt in other sizes and quantities by request, so if you need a different length or a smaller count it can be sourced rather than taken off the shelf in this configuration.
5) Do Metallics HTB44M hex tap bolts meet Buy American or ARRA requirements on a federal job?
Both the ARRA and Buy American compliance flags on the HTB44M are marked C (compliant). Country of origin on the part is China, so where a project specifies domestic melt and manufacture rather than general Buy American compliance, confirm which standard your spec is written to before you commit the box.
6) What thread standard do these hex tap bolts conform to, and will they thread into a standard 3/8-16 nut or strut channel nut?
Threads are made to IFI-199 (2014) at 16 threads per inch, the standard coarse series for 3/8 diameter. Any correctly made 3/8-16 nut, channel nut, tapped hole, or beam clamp will take them. The 3/4 inch length is short, so check your total stack-up: with a thick channel nut you may have little thread left past the nut.
7) How much does a box of 1,000 Metallics 3/8-16 x 3/4 hex tap bolts weigh for shipping and handling?
A full box runs 29.98 lbs, with carton dimensions of 7.25 by 6.25 by 6 inches. Worth knowing if you are staging material on a lift or sending multiple boxes up to a mechanical penthouse, since the weight is concentrated in a small carton.
How fast can I get the Metallics HTB44M delivered?
Most orders ship the same day from our distribution partners, with quick delivery throughout the
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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 HTB44M come with a warranty?
Absolutely. The Metallics HTB44M 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 HTB44M?
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installation tips, and troubleshooting. Contact Us
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