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Bolts 1/4-20 X 1-3/4 Hx Tap Blt St-zn (Jar 100)
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:
- 1/3/04
- 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:
- 100
- Order Minimum Uom Imperial:
- CT
- Pack Type:
- Jar
- Product Group:
- Fasteners
- Product Height:
- 4.57 in
- Product Length:
- 3 in
- Product Weight:
- 1279 g
- Product Width:
- 76.2 MM
- 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 Bolt
- Type2:
- Hexagonal Bolt
- Series:
- HTB, JHTB, and JSHTB
- Product Finish:
- Zinc
- Product Details:
- Hexagonal Bolt
- Product Material:
- Steel
Metallics JHTB51 – Frequently Asked Questions
1) What thread size and pitch is the Metallics JHTB51 hex tap bolt?
The JHTB51 is a 1/4-20 hex tap bolt, meaning a 1/4 inch diameter with 20 threads per inch, which is the standard UNC coarse pitch for that diameter. It takes any standard 1/4-20 nut or tapped 1/4-20 hole. Length is 1-3/4 inches.
2) Is a hex tap bolt threaded all the way to the head, or does it have a shoulder?
A hex tap bolt is fully threaded the whole length under the head, unlike a hex cap screw that has an unthreaded shank. That is what makes the JHTB51 useful for threading directly into a tapped hole or a strut nut, where you want engagement right up to the clamped surface. Thread form follows IFI-199 (2014).
3) What strength grade are these 1/4-20 hex tap bolts rated to?
Minimum tensile strength is 60,000 psi, with hardness in the Rockwell B69 to B100 range. That is low-carbon commercial grade material, appropriate for strut, enclosure, bracket, and general electrical mounting work. For structural or high-preload connections, step up to a higher grade fastener instead.
4) What wrench or socket size fits the head on the Metallics JHTB51?
Head width across the flats measures 0.425 to 0.438 inches, which is a 7/16 inch wrench or socket. Head type is a standard hex.
5) Will zinc plated steel hex tap bolts hold up outdoors or in a damp mechanical room?
The JHTB51 is steel with a zinc finish, which handles indoor and protected-interior electrical work well but is not a stainless part. For wet exterior, coastal, or washdown locations, specify the 18-8 stainless version in the same series rather than the zinc.
6) How many bolts come in a jar of Metallics JHTB51?
They ship 100 to a jar, and 100 count is the order minimum. Total weight of the jar is 1279 g. The jar packaging keeps loose 1-3/4 inch bolts contained on a cart or in a gang box rather than spilling in a bag.
7) Do these Metallics hex tap bolts meet Buy American requirements for a government job?
The JHTB51 is flagged compliant for both Buy American and ARRA. Country of origin is listed as multiple, so if your contract requires a single documented origin, request origin paperwork on the specific lot.
8) Can I get 1/4-20 hex tap bolts in a length other than 1-3/4 inches?
The JHTB51 covers the 1/4-20 by 1-3/4 inch size in a 100 count jar. Other lengths and pack quantities in the HTB, JHTB, and JSHTB series are available by request, including bulk HTB and stainless JSHTB.
How fast can I get the Metallics JHTB51 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 JHTB51 come with a warranty?
Absolutely. The Metallics JHTB51 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 JHTB51?
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
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