Bolts 5/16-18 X 1-1/4 G5 Hxbt St-zn (Jar 100)
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:
- 13/64 in.
- Fastener Head Type:
- Hex
- Fastener Head Width:
- 0.489 - 0.500 in.
- Fastener Height:
- 0.195 - 0.211
- Fastener Length:
- 1/1/04
- 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-Gr_5_Hex_Bolt_Dom_St-Zn.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:
- 4.57 in
- Product Length:
- 3 in
- Product Weight:
- 1506 g
- Product Width:
- 76.2 MM
- Sub Division:
- Electrical-E H2
- Tensile Strength:
- 105000 psi minimum
- Thread Per Inch:
- 18
- Thread Standard:
- ASME B18.2.1-2012
- Voltage Rating:
- Zinc Chromate
- Wrenching Height:
- 0.14
- 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 JG5HC54 – Frequently Asked Questions
1) What wrench or socket size fits the Metallics JG5HC54 5/16-18 hex bolt?
The hex head measures 0.489 to 0.500 inch across the flats, so a 1/2 inch wrench or socket is the one you want. Head height is 13/64 inch, which matters if you're working in a tight pocket or under a motor mount flange.
2) Will a 5/16-18 Grade 5 hex bolt thread into an existing coarse-thread tapped hole?
Yes, if the hole is UNC. The JG5HC54 is 5/16-18, 18 threads per inch, which is the standard coarse pitch for 5/16 diameter, and it's made to ASME B18.2.1-2012. It will not go into a 5/16-24 fine-thread hole. Shank diameter runs 0.3065 to 0.3125 inch, so a 5/16 clearance hole in a bracket needs to be drilled slightly oversize (a 21/64 or 11/32 bit is the usual choice).
3) Can I use these zinc plated hex bolts outdoors or in a wet location?
Zinc plating on steel is a mild corrosion barrier, fine for indoor mechanical rooms, equipment rooms, and panel or strut work. For direct weather exposure, washdown areas, or anywhere near chemicals or salt, step up to hot dip galvanized or stainless. The JG5HC54 is zinc finished carbon steel, not stainless.
4) How many bolts come in a jar of Metallics JG5HC54 and can I buy fewer?
It ships as a jar of 100, and 100 count is the order minimum, so the jar is the smallest unit. Metallics notes other sizes and quantities in the G5HC and JG5HC series are available by request if 1-1/4 inch length or this pack size doesn't suit the job.
5) Do these Grade 5 hex bolts meet Buy American requirements for a public project?
The JG5HC54 is flagged both ARRA compliant and Buy American compliant in Metallics' data. Country of origin is listed as multiple, so if your contract requires a specific origin certificate on the lot you receive, get that confirmed against the shipment documentation.
6) Is a hex cap screw the same thing as a hex bolt for this application?
For practical purposes on machinery mounting, yes. Metallics describes the JG5HC54 as a cap screw made from medium carbon steel and heat treated, and catalogs it as a hexagonal bolt to ASME B18.2.1-2012. Cap screws hold tighter dimensional tolerances on the head and body, which is why they're the choice for threading into a tapped hole rather than just passing through with a nut.
7) What steel are Metallics Grade 5 hex bolts made from?
Medium carbon steel heat treated, with the material called out to AISI 1008 through 1026. Yield and tensile are both listed at 105,000 psi minimum, and hardness lands at Rockwell C19-30. That's a weldable-ish plain carbon stock, but heat treated fasteners lose their grade properties if you weld or torch them, so don't modify these in the field.
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Does the Metallics JG5HC54 come with a warranty?
Absolutely. The Metallics JG5HC54 is backed by a manufacturer’s warranty.
For full warranty terms, check the product documentation or Contact Us.
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