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Bolts 5/16-18 x 1-1/2 Carriage Blt SS (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
- Division:
- Electrical H1
- Fastener Head Type:
- Mushroom
- Fastener Head Width:
- 0.688 - 0.719 in.
- Fastener Height:
- 0.156 - 0.176
- Fastener Length:
- 1/1/02
- Fastener Width:
- 0.307 - 0.324
- 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:
- 100
- Order Minimum Uom Imperial:
- JR
- Outside Diameter:
- 0.272 - 0.324 IN
- Pack Type:
- Jar
- Product Group:
- Fasteners
- Product Height:
- 5.75 in
- Product Length:
- 3.5 in
- Product Weight:
- 1787 g
- Product Width:
- 88.9 MM
- Sub Division:
- Electrical-E H2
- Thread Direction:
- Right Hand
- Thread Per Inch:
- 18
- 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 JCB56SS – Frequently Asked Questions
1) What nut and washer do I need for the Metallics JCB56SS carriage bolt?
The JCB56SS is a 5/16-18 bolt, so it takes a 5/16-18 UNC nut with right-hand threads, 18 threads per inch, cut to ANSI/ASME B1.1. Nuts and washers are not part of the jar, so order them separately. For a stainless assembly, match the 18-8 stainless steel of the bolt to avoid galvanic corrosion between dissimilar metals.
2) Do these carriage bolts meet Buy American requirements on a federal job?
No. The JCB56SS is not Buy American compliant and is not ARRA compliant; country of origin is listed as multiple. If your project carries a domestic sourcing clause, this is not the bolt to specify.
3) Will a mushroom head carriage bolt sit flush, or does it stand proud of the surface?
It stands slightly proud. The JCB56SS has a mushroom (round, low dome) head measuring 0.688 to 0.719 inch across with a head height of 0.156 to 0.176 inch, so it sits as a smooth low button on the face with no driver slot to catch on. If you need a truly flush face, use a flat head machine screw instead; carriage bolts are chosen where you want a tamper-resistant, snag-free exposed side.
4) Will a Metallics carriage bolt interchange with another brand's 5/16-18 carriage bolt?
Yes. The JCB56SS is made to ASME B18.5, the dimensional standard for round head square neck bolts, with threads to ANSI/ASME B1.1, so head diameter, square neck and thread pitch match any other B18.5 carriage bolt of the same 5/16-18 x 1-1/2 size. The one thing to keep consistent is material: swapping a plated steel bolt into a stainless assembly invites galvanic corrosion.
5) What trades actually use these stainless carriage bolts?
Metallics lists the JCB56SS for the electrical, plumbing, heating and air conditioning trades. On those jobs it shows up anchoring equipment feet and brackets, bolting strut and hanger assemblies, and fastening panels or enclosure mounting plates where you want a smooth, slot-free head on the exposed side and corrosion resistance in a damp mechanical space.
6) Can I get this stainless carriage bolt in other lengths or diameters?
Yes. Metallics builds the CB and JCB carriage bolt series in other sizes and other pack quantities on request, so if 5/16-18 x 1-1/2 is not the grip length you need, a different size in the same 18-8 stainless can be sourced.
How fast can I get the Metallics JCB56SS 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 JCB56SS come with a warranty?
Absolutely. The Metallics JCB56SS 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 JCB56SS?
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installation tips, and troubleshooting. Contact Us
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