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Bolts 7/16-14 x 2-1/4 G8 HXBT St-zn (Jar 25)
Features
- Used in automotive and fleet industries, where greater tensile strength is required than can be met by a Grade-5
- A cap screw made from medium carbon steel and heat-treated
Additional Notes
- Other sizes and quantities available by request
Manufacturer Resources
Product Specs
- Arra Compliant:
- N
- Buy American Compliant:
- No
- Division:
- Electrical H1
- Fastener Head Height:
- 19/64 in.
- Fastener Head Type:
- Hex
- Fastener Head Width:
- 0.612 - 0.625 in.
- Fastener Height:
- 0.272 - 0.291
- Fastener Length:
- 2/1/04
- Fastener Width:
- 0.687 - 0.722
- Grade:
- 8
- Hardness:
- Rockwell C33-39
- Language Code:
- EN
- Material Standard:
- AISI 1021 - 1045
- Order Minimum Imperial:
- 25
- Order Minimum Uom Imperial:
- EA
- Outside Diameter:
- 0.4305 - 0.4375 IN
- Pack Type:
- Jar
- Product Group:
- Fasteners
- Sub Division:
- Electrical-E H2
- Tensile Strength:
- 150000 psi minimum
- Thread Per Inch:
- 14
- Yield Strength:
- 130000 psi minimum
- Department:
- Electrical
- Product Subgroup:
- Bolts
- Product Type:
- Hexagonal Bolt
- Type2:
- Hexagonal Bolt
- Series:
- G8HC and JG8HC
- Product Finish:
- Zinc
- Product Details:
- Hexagonal Bolt
- Product Material:
- Steel
Metallics JG8HC76214 – Frequently Asked Questions
1) Is the Metallics JG8HC76214 a coarse or fine thread 7/16 bolt?
Coarse. It's a 7/16-14 hex cap screw, 14 threads per inch, which is the UNC pitch for 7/16 diameter. Shank measures 0.4305 to 0.4375 inch across. If your tapped hole or nut is 7/16-20 fine, this bolt will not thread into it.
2) Is a Grade 8 bolt actually stronger than the Grade 5 I'm replacing?
Yes, and by a meaningful margin. This is a Grade 8 medium carbon steel cap screw, heat treated, rated 150,000 psi minimum tensile and 130,000 psi minimum yield, with a hardness of Rockwell C33-39. Grade 5 tops out well below that. It's the usual step up for automotive and fleet work where Grade 5 won't carry the load. Grade 8 is harder and less ductile, so it is the wrong choice where you want a fastener to stretch rather than snap.
3) Can I use these Grade 8 bolts on a federally funded or Buy American job?
No. The JG8HC76214 is flagged not Buy American compliant and not ARRA compliant, with country of origin listed as multiple. On a project with domestic sourcing requirements you'll need a documented domestic Grade 8 fastener instead.
4) What wrench or socket size fits the head on this 7/16 Grade 8 hex bolt?
The hex head measures 0.612 to 0.625 inch across the flats, so a 5/8 inch socket or wrench is the fit. Head height is 19/64 inch, which matters if you're torquing in a recess or under a bracket with limited clearance.
5) Will zinc plated Grade 8 bolts hold up outdoors or in a wash bay?
The finish is zinc plating over steel, which handles indoor service and incidental moisture but is not a marine or continuously wet duty coating. For equipment that lives in road salt or gets pressure washed daily, expect the plating to give up before the bolt does. Material is AISI 1021 to 1045 steel.
6) How many bolts come in a jar of Metallics JG8HC76214?
They ship in a jar of 25, and 25 each is the order minimum. The jar pack is what the JG prefix on the part number signals, versus the bulk G8HC packaging in the same series.
7) Do these hex bolts come with nuts and washers?
No. This is the hex cap screw only, 25 to a jar. Order matching 7/16-14 hex nuts and hardened washers separately. On Grade 8 joints a hardened washer under the head matters, since the higher clamp load will dish a standard flat washer.
8) Is this bolt fully threaded?
At 7/16-14 x 2-1/4 this is a hex cap screw, which carries a plain shank below the head with threads on the lower portion rather than running thread the full length. If your joint needs thread all the way to the head, specify a fully threaded tap bolt instead.
9) Can I get this Grade 8 bolt in a different length or a bigger box?
Yes. Other sizes and quantities in the G8HC and JG8HC Grade 8 hex cap screw series are available by request, so if 2-1/4 inch is short for your grip length or 25 pieces won't cover the job, ask for the size and pack you need.
How fast can I get the Metallics JG8HC76214 delivered?
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Does the Metallics JG8HC76214 come with a warranty?
Absolutely. The Metallics JG8HC76214 is backed by a manufacturer’s warranty.
For full warranty terms, check the product documentation or Contact Us.
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