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Bolts 3/8-16 X 4-1/2 G5 Hxbt St-zn (Box 50)
Additional Notes
- Other sizes and quantities available by request
Features
- A cap screw made from medium carbon steel and heat-treated
- Used to mount motor to machinery. Also popular in automotive and truck repair
Manufacturer Resources
Product Specs
- Arra Compliant:
- N
- Buy American Compliant:
- No
- Division:
- Electrical H1
- Fastener Head Height:
- 15/64 in.
- Fastener Head Type:
- Hex
- Fastener Head Width:
- 0.551 - 0.562 in.
- Fastener Height:
- 0.226 - 0.243
- Fastener Length:
- 4/1/02
- Fastener Width:
- 0.628 - 0.650
- Grade:
- 5
- Hardness:
- Rockwell C19-30
- Language Code:
- EN
- Material Standard:
- AISI 1008 - 1026
- Order Minimum Imperial:
- 50
- Order Minimum Uom Imperial:
- EA
- Outside Diameter:
- 0.3690 - 0.3750 IN
- Pack Type:
- Box
- Product Group:
- Fasteners
- Sub Division:
- Electrical-E H2
- Tensile Strength:
- 105000 psi minimum
- Thread Per Inch:
- 16
- Thread Standard:
- ASME B18.2.1-2012
- Wrenching Height:
- 0.16
- Yield Strength:
- 105000 psi minimum
- Department:
- Electrical
- Product Subgroup:
- Bolts
- Product Type:
- Hexagonal Bolt
- Type2:
- Hexagonal Bolt
- Series:
- G5HC and JG5HC
- Product Finish:
- Zinc
- Product Details:
- Hexagonal Bolt
- Product Material:
- Steel
Metallics G5HC40 – Frequently Asked Questions
1) What wrench or socket size fits the Metallics G5HC40 3/8-16 hex bolt?
Across the flats the head measures 0.551 to 0.562 inch, which is a 9/16 inch wrench or socket. Head height is 15/64 inch, so plan on roughly that much clearance above the surface once it is seated.
2) Is the Metallics G5HC40 bolt coarse or fine thread, and what nut do I need?
It is a 3/8 inch diameter bolt with 16 threads per inch, so it takes a 3/8-24... no. Pair it with a 3/8-16 nut. Standard 3/8 coarse is 16 TPI, so ordinary 3/8-16 hex nuts and tapped 3/8-16 holes accept it. Thread form follows ASME B18.2.1-2012.
3) How strong is a Grade 5 zinc hex bolt like the Metallics G5HC40?
Grade 5 medium carbon steel, heat treated, with 105,000 psi minimum tensile and yield values on record and a hardness of Rockwell C19-30. That is the common structural-duty grade for motor mounting and equipment anchoring, a step above an unmarked Grade 2 bolt.
4) Can I use Metallics G5HC40 bolts on a federally funded or Buy American job?
No. These Grade 5 hex cap screws are not Buy American compliant and are not ARRA compliant, with country of origin listed as multiple. On a job with domestic sourcing requirements you need a domestically produced fastener instead.
5) Will a 3/8-16 Grade 5 hex bolt pass through a 3/8 inch hole?
The shank measures 0.3690 to 0.3750 inch, which is a nominal 3/8. A drilled 3/8 inch hole is a tight fit at best, so most installers open the hole to 7/16 inch for clearance on unthreaded holes.
6) Are these Metallics Grade 5 bolts okay outdoors or in a damp mechanical room?
The finish is zinc plated steel, which handles indoor and sheltered damp conditions. For sustained outdoor weather exposure, salt, or wash-down areas, go to hot dip galvanized or stainless instead; zinc plating is a light sacrificial coating, not a marine finish.
7) How many bolts come in a box of Metallics G5HC40?
They ship as a box of 50 pieces, and 50 each is the order minimum. If you need a different count or a different length in the same G5HC series, other sizes and quantities are available by request.
8) What steel is used in the Metallics G5HC and JG5HC bolt series?
The series is produced to AISI 1008-1026 steel, a medium carbon range that is then heat treated to reach Grade 5 properties. That is what gives the 105,000 psi minimum strength rating rather than the lower values of a plain low carbon bolt.
How fast can I get the Metallics G5HC40 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 G5HC40 come with a warranty?
Absolutely. The Metallics G5HC40 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 G5HC40?
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installation tips, and troubleshooting. Contact Us
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