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Nuts 1/4-20 Cap Nut SS (Jar 100)
Features
- Proper Finish When Covering Exposed Threaded Bolt Ends
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 Width:
- 0.423 - 0.4375 in.
- Fastener Height:
- 0.318 - 0.338
- Fastener Width:
- 0.482-0.505
- Field Application:
- Electrical, Plumbing, Heating and Air Conditioning Industries
- Language Code:
- EN
- Neurspe:
- https://ideadigitalasset.com/DAMRoot/Original/10035/11237_ID-SPE-v1-ID-SPE-v1-Cap_Acorn_Nut_Nickel_Plated_18-8_SS.pdf
- Order Minimum Imperial:
- 100
- Order Minimum Uom Imperial:
- JR
- Pack Type:
- Jar
- Product Group:
- Fasteners
- Product Height:
- 2.15 in
- Product Length:
- 3 in
- Product Weight:
- 1.31 lbs
- Product Width:
- 3 in
- Sub Division:
- Electrical-E H2
- Thread Per Inch:
- 20
- Department:
- Electrical
- Product Subgroup:
- Nuts
- Product Type:
- Cap Nut
- Type2:
- Cap Nut
- Series:
- JCN
- Product Details:
- Cap Nut
- Product Material:
- 18-8 Stainless Steel
Metallics JCN163SS – Frequently Asked Questions
1) Will the Metallics JCN163SS cap nut thread onto a 1/4-20 bolt?
Yes. The JCN163SS is a 1/4-20 cap nut, 20 threads per inch, so it runs onto any standard 1/4 inch coarse-thread bolt or threaded rod. It is a closed (acorn) nut, so it covers the end of the bolt rather than letting threads run through it. Plan on the bolt end stopping inside the dome.
2) Are Metallics JCN163SS cap nuts stainless, and will they hold up outdoors or in a wet location?
They are 18-8 stainless steel, the common 300-series austenitic grade used where plated steel would rust. That makes them a reasonable choice for exterior strut runs, damp mechanical rooms, and washdown areas. In coastal or chloride-heavy environments 18-8 will still show surface staining over time.
3) Do Metallics JCN163SS cap nuts meet Buy American or ARRA requirements for a government job?
No. The JCN163SS is not Buy American compliant and is not ARRA compliant, with country of origin listed as multiple. On a federally funded project with domestic sourcing language in the spec, this part will not satisfy it.
4) What wrench or socket size fits the Metallics JCN163SS cap nut?
The hex on the JCN163SS measures 0.423 to 0.4375 in. across the flats, which is 7/16 inch, so a 7/16 wrench or socket is the one to grab. Across the corners it runs 0.482 to 0.505 in., and overall height is 0.318 to 0.338 in. If you are working in a tight box or channel, that corner dimension is the clearance number to check.
5) How many cap nuts come in a jar of Metallics JCN163SS, and can I buy fewer?
The JCN163SS ships as a jar of 100 pieces, and the jar is the minimum order unit, so 100 is the smallest quantity. The filled jar weighs 1.31 lbs. Other sizes and quantities in the JCN cap nut line are available by request.
6) What are cap nuts like the Metallics JCN163SS actually used for on a job?
They go on the exposed end of a threaded bolt or rod to finish it off and cover sharp threads, which is why they turn up on electrical, plumbing, and HVAC work: strut and rod hangers, panel and enclosure mounting, equipment feet, anywhere a cut thread end is at hand height or in a public area. The dome also keeps threads from snagging wire or insulation.
7) Can I use the JCN163SS cap nut as the only nut holding a connection together?
Treat it as a finish nut, not a structural one. Because it is closed, the bolt cannot run past it, so you get only the thread engagement the 0.318 to 0.338 in. body allows. On anything carrying real load, run a standard 1/4-20 hex nut to full torque first and use the cap nut over the remaining thread as the cover.
How fast can I get the Metallics JCN163SS 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 JCN163SS come with a warranty?
Absolutely. The Metallics JCN163SS 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 JCN163SS?
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installation tips, and troubleshooting. Contact Us
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