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Manufacturer Resources
Product Specs
- Arra Compliant:
- C
- Buy American Compliant:
- C
- Division:
- Electrical H1
- Fastener Head Height:
- 13/64 in.
- Fastener Head Type:
- Hex
- Fastener Head Width:
- 0.489 - 0.500 in.
- Fastener Height:
- 0.195 - 0.211
- Fastener Length:
- 3
- Fastener Width:
- 0.557 - 0.577
- Grade:
- 5
- Hardness:
- Rockwell C19-30
- Language Code:
- EN
- Material Standard:
- AISI 1008 - 1026
- 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
- Outside Diameter:
- 0.3065 - 0.3125 IN
- Pack Type:
- Jar
- Product Group:
- Fasteners
- Product Height:
- 7.25 in
- Product Length:
- 4.5 in
- Product Weight:
- 2830 g
- Product Width:
- 114.3 MM
- Sub Division:
- Electrical-E H2
- Tensile Strength:
- 105000 psi minimum
- Thread Direction:
- Right Hand
- Thread Per Inch:
- 18
- Thread Standard:
- ASME B18.2.1-2012
- Wrenching Height:
- 0.14
- Yield Strength:
- 105000 psi minimum
- Department:
- Electrical
- Product Subgroup:
- Bolts
- Product Type:
- Hexagonal Bolt
- Type2:
- Hexagonal Bolt
- Series:
- G5HTB and JG5HTB
- Product Finish:
- Zinc
- Product Details:
- Hexagonal Bolt
- Product Material:
- Steel
Metallics JG5HTB16 – Frequently Asked Questions
1) Is the Metallics JG5HTB16 hex tap bolt threaded all the way to the head?
Yes. A hex tap bolt is fully threaded along its length, which is what separates it from a hex cap screw with a plain shoulder. The JG5HTB16 is 5/16-18 by 3 inches long, right hand thread at 18 threads per inch, so you get full thread engagement anywhere along the 3 inch grip.
2) Will a 5/16-18 Grade 5 tap bolt hold a motor mount, or do I need Grade 8?
Grade 5 is the normal choice for motor and machinery mounting, and this Metallics bolt is made for exactly that job plus automotive and truck repair. It is medium carbon steel, heat treated to Rockwell C19-30, with 105,000 psi minimum tensile and 105,000 psi minimum yield. Step up to Grade 8 only where the engineering drawing calls for it; for general equipment anchoring Grade 5 is the standard spec.
3) What wrench size fits the head on the 5/16-18 Metallics hex tap bolt?
The hex head measures 0.489 to 0.500 inch across the flats, so a 1/2 inch wrench or socket is the right tool. Head height is 13/64 inch, with a wrenching height of 0.14 inch, so there is enough bearing surface for a standard socket in a counterbored or recessed pocket.
4) Is zinc plating on these bolts good enough for outdoor use?
The JG5HTB16 is steel with a zinc finish, which is a corrosion coating for dry or sheltered service, machine rooms, equipment skids, and interior electrical work. Direct weather exposure, washdown, or coastal air will eat through plated zinc over time. For those conditions use hot dip galvanized or 18-8 stainless hardware instead.
5) Do these Metallics hex tap bolts meet Buy American and ARRA requirements for a government job?
Both the ARRA Compliant and Buy American Compliant fields on the JG5HTB16 carry a C designation. Country of origin is China. On a federally funded project where domestic origin is enforced by the contract, verify the compliance basis against your spec before submitting.
6) Can I use a standard 5/16-18 nut and lock washer with these bolts?
Yes. The thread is 5/16-18 UNC, right hand, cut to ASME B18.2.1-2012, so any standard 5/16-18 nut, flat washer, or split lock washer threads on. Match the nut grade to the bolt, Grade 5 bolt with a Grade 5 (or higher) nut, so the nut is not the weak point.
How fast can I get the Metallics JG5HTB16 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 JG5HTB16 come with a warranty?
Absolutely. The Metallics JG5HTB16 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 JG5HTB16?
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