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Bolts 3/8-16 X 3 Carriage Blt SS (Jar 50)
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
- Division:
- Electrical H1
- Fastener Head Type:
- Mushroom
- Fastener Head Width:
- 0.782 - 0.844 in.
- Fastener Height:
- 0.188 - 0.208
- Fastener Length:
- 3
- Fastener Width:
- 0.368 - 0.388
- Field Application:
- Electrical, Plumbing, Heating, Air Conditioning Industries
- Language Code:
- EN
- Material Standard:
- ASTM F593
- 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:
- 50
- Order Minimum Uom Imperial:
- EA
- Outside Diameter:
- 0.329 - 0.388 IN
- Pack Type:
- Jar
- Product Group:
- Fasteners
- Product Height:
- 7.25 in
- Product Length:
- 4.5 in
- Product Weight:
- 2245 g
- Product Width:
- 114.3 MM
- Sub Division:
- Electrical-E H2
- Thread Direction:
- Right Hand
- Thread Per Inch:
- 16
- Thread Standard:
- ANSI/ASME B1.1
- Thread Type:
- UNC
- Department:
- Electrical
- Product Subgroup:
- Bolts
- Product Type:
- Hexagonal Bolt
- Type2:
- Hexagonal Bolt
- Series:
- CB and JCB
- Product Details:
- Hexagonal Bolt
- Product Material:
- 18-8 Stainless Steel
Metallics JCB26SS – Frequently Asked Questions
1) What size and thread does the Metallics JCB26SS carriage bolt have, and will a standard 3/8-16 nut fit it?
The JCB26SS is a 3/8-16 x 3 inch carriage bolt with 16 threads per inch, UNC coarse thread, right hand, made to ANSI/ASME B1.1. Any standard 3/8-16 UNC nut threads onto it. Measured shank is 0.368 to 0.388 inch, so it drops through a 7/16 inch hole without binding.
2) Is this stainless carriage bolt OK for outdoor or damp locations?
It is 18-8 stainless steel to ASTM F593, which is the standard austenitic stainless fastener spec and holds up in wet and outdoor work. For chloride exposure such as coastal or pool chemical environments, 316 stainless is the better choice.
3) How does a carriage bolt head seat, and do I need a square hole?
The JCB26SS has a mushroom head, 0.782 to 0.844 inch across and 0.188 to 0.208 inch high, with a square shoulder under it per ASME B18.5. The shoulder bites into wood as you tighten so the bolt will not spin, which means you only need a round through-hole and one wrench on the nut side. In steel or thin material the square does not grip, so hold the head while tightening.
4) Will these bolts meet a Buy American or ARRA requirement on a federal job?
No. The JCB26SS is listed as not Buy American compliant and not ARRA compliant, with multiple countries of origin. If your contract carries a domestic sourcing clause, these will not qualify.
5) Are nuts and washers included with the JCB26SS carriage bolts?
Bolts only. The jar contains the 3/8-16 x 3 carriage bolts and nothing else, so order 3/8-16 hex nuts and flat washers separately. Match the stainless, 18-8 nuts and washers with 18-8 bolts, since mixing plated steel nuts onto stainless bolts gives you galvanic corrosion at the joint.
6) How many carriage bolts come in a jar, and can I buy fewer than 50?
The JCB26SS ships as a jar of 50 pieces, and 50 each is the order minimum, so a jar is the smallest unit. Smaller counts in other sizes can be requested.
7) What trades use these stainless carriage bolts, and is a mushroom head bolt the right pick over a hex bolt?
Metallics lists this bolt for the electrical, plumbing, heating and air conditioning trades, typical work being strut, hanger and bracket mounting to wood framing. Choose a carriage bolt when you want a smooth low-profile head on the finished side and no exposed edges to catch, and when you can only reach one side with a wrench. If both sides are accessible and you need to torque the fastener properly to a spec, a hex head bolt is the better choice because a mushroom head gives you nothing to grip.
How fast can I get the Metallics JCB26SS delivered?
Most orders ship the same day from our distribution partners, with quick delivery throughout the
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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 JCB26SS come with a warranty?
Absolutely. The Metallics JCB26SS 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 JCB26SS?
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