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Bolts 3/8-16 X 1 Carriage Blt St-zn (Jar 100)
Additional Notes
- Other sizes and quantities available by request
Manufacturer Resources
Product Specs
- Arra Compliant:
- N
- Buy American Compliant:
- No
- Dimensional Standard:
- ASME B18.5-1990
- Division:
- Electrical H1
- Fastener Head Type:
- Mushroom
- Fastener Head Width:
- 0.782 - 0.844 in.
- Fastener Height:
- 0.188 - 0.208
- Fastener Length:
- 1
- Fastener Width:
- 0.368 - 0.388
- Field Application:
- Electrical, Plumbing, Heating, Air Conditioning Industries
- Hardness:
- Rockwell B70-B100
- Language Code:
- EN
- Neurspe:
- https://ideadigitalasset.com/DAMRoot/Original/10035/11237_ID-SPE-v1-ID-SPE-v1-Carriage_Bolt_18-8_SS_and_316_SS.pdf
- Order Minimum Imperial:
- 100
- Order Minimum Uom Imperial:
- JR
- Outside Diameter:
- 0.360 - 0.388 IN
- Pack Type:
- Jar
- Product Group:
- Fasteners
- Product Height:
- 5.75 in
- Product Length:
- 3.5 in
- Product Weight:
- 2164 g
- Product Width:
- 88.9 MM
- Sub Division:
- Electrical-E H2
- Tensile Strength:
- 60000 psi minimum
- Thread Direction:
- Right Hand
- Thread Per Inch:
- 16
- Yield Strength:
- 36000 psi minimum
- Department:
- Electrical
- Product Subgroup:
- Bolts
- Product Type:
- Hexagonal Bolt
- Type2:
- Hexagonal Bolt
- Series:
- CB and JCB
- Product Finish:
- Zinc
- Product Details:
- Hexagonal Bolt
- Product Material:
- Steel
Metallics JCB56 – Frequently Asked Questions
1) What size is the Metallics JCB56 carriage bolt, and what nut thread does it take?
The JCB56 is a 3/8-16 carriage bolt, 1 inch long under the head, with right hand threads at 16 threads per inch. That means it pairs with a standard 3/8-16 hex nut. Shank measures 0.360 to 0.388 inch outside diameter, so it drops through a 3/8 inch drilled hole.
2) What strength rating do these carriage bolts carry? My spec calls out a tensile minimum.
Minimum tensile is 60,000 psi with a 36,000 psi minimum yield, and hardness runs Rockwell B70 to B100. The bolt is made to ASME B18.5-1990 dimensions. If a drawing calls for a higher strength class, this is not the fastener for it, but for general electrical, plumbing, and HVAC support work it meets the usual commercial carriage bolt requirement.
3) Do these carriage bolts qualify for a Buy American or ARRA funded job?
No. The JCB56 is not Buy American compliant and is not ARRA compliant, with country of origin listed as multiple. On federally funded work with domestic sourcing requirements you will need a domestically produced carriage bolt instead.
4) Is a zinc plated steel carriage bolt okay outdoors or in a damp mechanical room?
The JCB56 is steel with a zinc finish, which handles indoor and dry-protected work and short-term weather exposure. It is not a stainless fastener, so for sustained outdoor, coastal, wet-pit, or chemical exposure you want 18-8 or 316 stainless carriage bolts instead.
5) Carriage bolt or hex bolt for mounting electrical equipment to channel?
Use the carriage bolt where you can only reach one side. The square shoulder, 0.368 to 0.388 inch across, grips the hole so the bolt does not spin while you run the nut, and the wide 0.782 to 0.844 inch dome spreads bearing on thin material. Choose a hex bolt when you need to apply higher torque with a wrench on both ends, or when the head has to seat flat in a counterbore.
How fast can I get the Metallics JCB56 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 JCB56 come with a warranty?
Absolutely. The Metallics JCB56 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 JCB56?
You can call, text, or email our expert support team for fast answers. We’re here to help with
product
selection,
installation tips, and troubleshooting. Contact Us
Why buy the Metallics JCB56 from ZenSupply?
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and
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every order.
Our team is always ready to help you choose the right product for your project.