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Bolts 1/4-20 x 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:
- 2-Jan
- 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 in
- Product Length:
- 7.25 in
- Product Weight:
- 25.57 lbs
- Product Width:
- 6.25 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 HTB11B – Frequently Asked Questions
1) What size is the Metallics HTB11B hex tap bolt and what thread does it take?
The HTB11B is a 1/4-20 x 1/2 inch hex tap bolt, so it runs 20 threads per inch on a 1/4 inch coarse (UNC) thread. It mates with any 1/4-20 nut, tapped hole, or strut channel nut. Threads are formed to IFI-199 (2014).
2) What is the strength rating on the Metallics HTB11B tap bolt?
Minimum tensile strength is 60,000 psi, with hardness of Rockwell B69 to B100. That is standard low carbon steel fastener strength, equivalent in tensile class to ordinary unmarked hex bolts. If a drawing calls out SAE Grade 5 or Grade 8 for a structural or vibration load, this bolt does not cover it.
3) How are these sold, and can I buy fewer than a full box?
The HTB11B ships as a box of 2,500 pieces, and 2,500 is the order minimum. Boxed weight is 25.57 lbs. Smaller counts of this exact size are not part of the HTB11B pack, though other sizes and quantities in the hex tap bolt line can be requested.
4) Is a hex tap bolt threaded all the way, and does that matter for strut or unistrut work?
A tap bolt is a hex head fastener threaded full length to the head, which is why electricians reach for it over a standard hex cap screw with a shoulder. On a short 1/2 inch length like the HTB11B, full thread means the whole grip engages a channel nut or a tapped hole, so you get maximum thread engagement in thin material such as strut, box ears, and sheet steel brackets.
5) What wrench or socket do I need for these 1/4-20 hex tap bolts?
Head width across the flats measures 0.425 to 0.438 inch, which is a 7/16 inch wrench or socket. A 7/16 nut driver works for overhead box and strut work.
6) Are these bolts coated for corrosion, and can I use them in a damp location?
These are steel bolts with a zinc finish. Zinc plating handles indoor and normally dry or occasionally damp conditions. For wet exterior, coastal, or chemically aggressive locations, step up to a stainless fastener instead; the Metallics tap bolt line is also produced in 18-8 stainless.
7) Where are Metallics HTB11B hex tap bolts made?
Country of origin is China. Facility and institutional buyers working to a domestic sourcing spec should factor that in when writing the submittal.
8) Can I use a hex tap bolt instead of a machine screw for mounting electrical boxes and brackets?
Yes, and it is often the better pick. A hex head takes a socket or nut driver, so you can run it down with more torque and less cam out than a slotted or combo machine screw, and the full length thread behaves the same way in a tapped hole. The trade off is you need wrench clearance around the head; in tight channels a round or pan head machine screw fits better.
How fast can I get the Metallics HTB11B 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 HTB11B come with a warranty?
Absolutely. The Metallics HTB11B 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 HTB11B?
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
Why buy the Metallics HTB11B from ZenSupply?
ZenSupply makes it easy to get the commercial door hardware you need—fast shipping, expert support,
and
rewards on
every order.
Our team is always ready to help you choose the right product for your project.