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Bolts 3/8-16 X 2-3/4 G5 Hxbt St-zn (Jar 50)
Additional Notes
- Other sizes and quantities available by request
Features
- Used to mount motor to machinery. Also popular in automotive and truck repair
- A cap screw made from medium carbon steel and heat-treated
Manufacturer Resources
Product Specs
- Arra Compliant:
- C
- Buy American Compliant:
- C
- 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:
- 2/3/04
- Fastener Width:
- 0.628 - 0.650
- 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-Gr_5_Hex_Bolt_Dom_St-Zn.pdf
- Order Minimum Imperial:
- 50
- Order Minimum Uom Imperial:
- EA
- Outside Diameter:
- 0.3690 - 0.3750 IN
- Pack Type:
- Jar
- Product Group:
- Fasteners
- Product Height:
- 5.75 in
- Product Length:
- 3.5 in
- Product Weight:
- 2268 g
- Product Width:
- 88.9 MM
- Sub Division:
- Electrical-E H2
- Tensile Strength:
- 105000 psi minimum
- Thread Per Inch:
- 16
- Thread Standard:
- ASME B18.2.1-2012
- Voltage Rating:
- Zinc Chromate
- 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 JG5HC31 – Frequently Asked Questions
1) Is a Grade 5 hex bolt strong enough for mounting a motor to a machine base?
Yes, that is the intended use. The JG5HC31 is a Grade 5 medium carbon steel cap screw, heat treated, with 105,000 psi minimum tensile and 105,000 psi minimum yield and a hardness of Rockwell C19-30. Metallics lists motor mounting to machinery as the primary application, along with automotive and truck repair. For higher clamp loads you would step up to a Grade 8 bolt instead.
2) Does the Metallics JG5HC31 hex bolt meet Buy American and ARRA requirements for a public project?
Metallics flags the JG5HC31 as both Buy American compliant and ARRA compliant. Country of origin is listed as multiple, so if your spec requires documentation of a single source country, get the cert on the specific lot shipped.
3) How many bolts come in a jar of Metallics JG5HC31?
Fifty pieces, packed in a jar. The order minimum is 50 each, so the jar is the buy unit rather than a loose count. Jar weight is listed at 2268 g. Metallics notes other sizes and quantities are available by request.
4) Will a zinc plated Grade 5 bolt hold up outdoors or in a damp mechanical room?
The JG5HC31 is steel with a zinc finish, which handles indoor mechanical rooms, equipment rooms and general industrial service fine. Zinc plating is a sacrificial coating, not stainless, so for continuous wet, coastal or chemical exposure a hot dip galvanized or stainless fastener is the better call.
5) What dimensional standard do these 3/8-16 hex bolts follow, and will the heads clear a tight bracket?
Threads and head geometry follow ASME B18.2.1-2012, so the JG5HC31 interchanges with any standard 3/8-16 hex cap screw of the same length. Head height is 15/64 inch and the head measures 0.551 to 0.562 inch across the flats, with a wrenching height of 0.16 inch. If you are bolting into a recess or counterbore, those are the numbers to check for socket clearance.
6) What steel are Metallics Grade 5 hex bolts made from?
Material standard is AISI 1008 to 1026 steel, heat treated to Grade 5 properties. That lands it at Rockwell C19-30 hardness with 105,000 psi minimum tensile. It is a structural and machinery fastener, not a stainless or non magnetic one.
How fast can I get the Metallics JG5HC31 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 JG5HC31 come with a warranty?
Absolutely. The Metallics JG5HC31 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 JG5HC31?
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