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Bolts 3/8-16 X 1-1/4 G5 Hxbt St-zn (Jar 100)
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:
- C
- Buy American Compliant:
- C
- Country Of Origin:
- United States
- 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:
- 1/1/04
- Fastener Width:
- 0.628 - 0.650
- Grade:
- 5
- Hardness:
- Rockwell C19-30
- Language Code:
- EN
- Material Standard:
- AISI 1008 - 1026
- Order Minimum Imperial:
- 100
- Order Minimum Uom Imperial:
- CT
- 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:
- 1923 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 JG5HC59D – Frequently Asked Questions
1) What thread does the Metallics JG5HC59D hex bolt use, and will it take a standard 3/8-16 nut?
It's a 3/8 inch diameter bolt with 16 threads per inch, cut to ASME B18.2.1-2012. Shank outside diameter runs 0.3690 to 0.3750 inch. Any standard 3/8-16 nut or tapped 3/8-16 hole will take it. Note 16 TPI is UNC coarse for this diameter, so don't mix it with fine-thread 3/8-24 nuts you may already have on the shelf.
2) Is a Grade 5 bolt strong enough for mounting a motor to a machine base?
Yes, that's the stated use for these Metallics hex cap screws. Grade 5 medium carbon steel, heat treated, with 105,000 psi minimum tensile and yield and a hardness of Rockwell C19-30. That's the standard structural-duty cap screw for motor mounts, pump bases and truck and automotive repair. If the drawing calls for Grade 8, this is not a substitute.
3) Do these Metallics hex bolts meet Buy American and ARRA requirements for a public project?
Yes. The JG5HC59D is made in the United States and is flagged compliant for both Buy American and ARRA, which is what government, school district and other publicly funded jobs ask for on fasteners.
4) Is the zinc plating on these bolts good enough for outdoor or damp locations?
The finish is zinc plating over steel, which handles indoor mechanical rooms, equipment bases and general MRO fine. It's a sacrificial coating, not stainless, so in constant wet, coastal or washdown service it will eventually rust at the threads. For exterior or corrosive duty step up to hot dip galvanized or stainless.
5) How many bolts come in a jar, and can I buy fewer than a full jar?
These ship as a jar of 100, and 100 count is the order minimum, so the jar is the smallest unit. Jar packaging keeps loose hardware together on a service truck better than a poly bag. Other quantities are available by request.
6) What steel are these Grade 5 hex cap screws made from?
Medium carbon steel in the AISI 1008 to 1026 range, heat treated to reach Grade 5 properties. That composition is weldable in a pinch but welding destroys the heat treatment, so don't weld a Grade 5 bolt and expect it to hold 105,000 psi afterward.
How fast can I get the Metallics JG5HC59D 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 JG5HC59D come with a warranty?
Absolutely. The Metallics JG5HC59D 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 JG5HC59D?
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