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Bolts 3/8-16 X 1-1/2 Carriage Blt St (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:
- 1/1/02
- 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:
- 2731 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 JCB23 – Frequently Asked Questions
1) What size nuts and washers do I need for the Metallics JCB23 carriage bolt?
The JCB23 is a 3/8-16 carriage bolt, so it takes standard 3/8-16 hex nuts, right hand thread, with 16 threads per inch. Shank measures 0.360 to 0.388 inch outside diameter. Pair it with a 3/8 flat washer under the nut if you are clamping wood or sheet metal, since the mushroom head side seats flush and should not be washered.
2) Will these bolts pass a Buy American or ARRA requirement on a federal job?
No. The JCB23 carriage bolt is not Buy American compliant and is not ARRA compliant, with country of origin listed as multiple. On federally funded work with domestic sourcing language in the contract, you will need a documented domestic fastener instead.
3) Is the Metallics JCB23 carriage bolt rust resistant enough for damp or outdoor work?
It is zinc plated steel, which handles indoor damp, mechanical rooms, and covered exterior locations. For direct weather exposure, salt air, or pressure treated lumber, zinc plating will corrode over time and stainless is the better call. Metallics builds the same carriage bolt pattern in 18-8 and 316 stainless if the job calls for it.
4) Does the JCB23 carriage bolt meet a recognized dimensional standard?
Yes, it is built to ASME B18.5-1990, the standard covering round head bolts including carriage bolts. If a spec or submittal calls for a B18.5 dimensional carriage bolt, the head diameter, head height, and square neck on this bolt conform to it.
5) Is this a hex head bolt or a round head carriage bolt?
It is a round, mushroom head carriage bolt, not a hex head. There is no wrenching surface on top, so you tighten from the nut side only, and the domed head sits nearly flush with a smooth finished face. If you need to turn the bolt itself with a wrench, you want a hex cap screw instead.
6) How many bolts come in a jar of Metallics JCB23, and can I buy fewer?
The JCB23 ships as a jar of 100 bolts, and one jar is the order minimum. Smaller counts are not broken out of the jar, though Metallics lists other sizes and quantities in the CB and JCB carriage bolt series on request if 100 of this size is not what you need.
7) What trades actually use the Metallics JCB23 carriage bolt?
It is stocked for electrical, plumbing, heating, and air conditioning work: bolting unistrut and trapeze hangers, securing equipment bases and backer boards, mounting panels and enclosures to wood blocking. The smooth domed head is handy anywhere a protruding hex head would snag a cable or a hand.
How fast can I get the Metallics JCB23 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 JCB23 come with a warranty?
Absolutely. The Metallics JCB23 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 JCB23?
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 JCB23 from ZenSupply?
ZenSupply makes it easy to get the commercial door hardware you need—fast shipping, expert support,
and
rewards on
every order.
Our team is always ready to help you choose the right product for your project.