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Nuts 7/16-14 G8 Ny-Ins Locknut St-Yz (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 B18.16.6
- Division:
- Electrical H1
- Fastener Head Height:
- 0.438 - 0.468 in.
- Fastener Head Width:
- 0.616 - 0.627 in.
- Fastener Height:
- 0.324
- Grade:
- 8
- Language Code:
- EN
- Order Minimum Imperial:
- 100
- Order Minimum Uom Imperial:
- CT
- Pack Type:
- Jar
- Product Group:
- Fasteners
- Sub Division:
- Electrical-E H2
- Thread Per Inch:
- 14
- Thread Standard:
- ANSI/ASME B1.1
- Department:
- Electrical
- Product Subgroup:
- Nuts
- Product Type:
- Hexagonal Nylon Insert Lock Nut
- Type2:
- Hexagonal Nylon Insert Lock Nut
- Series:
- JG8NYN
- Product Finish:
- Zinc
- Product Details:
- Hexagonal Nylon Insert Lock Nut
- Product Color:
- Yellow
- Product Material:
- Steel
Metallics JG8NYN172 – Frequently Asked Questions
1) Will a 7/16-14 Grade 8 nylon insert locknut thread onto standard 7/16 inch UNC bolts?
Yes. The Metallics JG8NYN172 locknut is cut 7/16-14, which is 14 threads per inch to ANSI/ASME B1.1, the standard coarse (UNC) series for 7/16 inch fasteners. It will run onto any 7/16-14 UNC threaded rod, bolt or stud. It will not fit 7/16-20 fine thread.
2) What wrench or socket size do I need for these 7/16-14 nylon insert locknuts?
Across-flats width on the JG8NYN172 runs 0.616 to 0.627 inch, so a 5/8 inch (0.625) wrench or socket is the fit. Nut height is 0.438 to 0.468 inch, which is the taller profile typical of a nylon insert nut, so allow for that stack height plus a couple of threads of bolt protruding through the insert.
3) Is this a Grade 8 nut, and can I use it with Grade 8 bolts?
Grade 8 is what you get here. The JG8NYN172 is a Grade 8 steel nylon insert locknut, so it is matched to Grade 8 bolting and will not be the weak link in a high strength joint. Note the nylon insert limits service temperature, so for high heat applications an all metal prevailing torque nut is the better choice.
4) Can I use these nuts on a Buy American or ARRA funded job?
No. The JG8NYN172 is not Buy American compliant and is not ARRA compliant; country of origin is listed as multiple. For federally funded work with domestic sourcing requirements, you will need a domestically produced locknut instead.
5) Should I use a nylon insert locknut or a plain hex nut with a lock washer?
A nylon insert nut like the JG8NYN172 resists back-off from vibration without needing a separate washer, because the nylon collar grips the bolt threads rather than relying on spring tension. That makes it the choice for equipment mounts, strut and conduit support, and anything that shakes. The trade-off: the insert is best treated as single use, so if the joint gets taken apart repeatedly, a plain hex nut with a washer, or an all metal lock nut, is the better pick.
6) What finish are these locknuts, and are they okay outdoors?
These are steel nuts with a yellow zinc finish. Zinc plating gives moderate corrosion resistance suited to indoor and protected or dry outdoor work. For continuous wet, coastal, or buried service, specify hot dip galvanized or stainless instead.
7) How many nuts come in a jar of Metallics JG8NYN172, and is there a minimum order?
The JG8NYN172 ships as a jar of 100 pieces, and 100 count is the order minimum, so one jar is the smallest buy. If you need a different size or a bulk quantity instead of jars, other sizes and quantities are available by request.
8) Do these locknuts meet a dimensional spec I can put on a submittal?
Dimensions conform to ASME B18.16.6, the standard covering prevailing torque hex lock nuts, and threads are to ANSI/ASME B1.1. That pair of callouts plus the Grade 8 designation is normally what a spec section wants for a nylon insert locknut.
How fast can I get the Metallics JG8NYN172 delivered?
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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 JG8NYN172 come with a warranty?
Absolutely. The Metallics JG8NYN172 is backed by a manufacturer’s warranty.
For full warranty terms, check the product documentation or Contact Us.
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