You may also like
Nuts 3/8-16 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:
- 0.551 - 0.564 in.
- Fastener Height:
- 0.335
- 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:
- 16
- 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 JG8NYN165 – Frequently Asked Questions
1) What thread size is the Metallics JG8NYN165 nylon insert lock nut?
It is a 3/8 inch nut with 16 threads per inch, cut to the ANSI/ASME B1.1 thread standard. That means it mates with 3/8-16 threaded rod, bolts, or studs. If your rod is 3/8-16 (common in strut and trapeze hanging work) this nut threads straight on; a 3/8-24 fine thread fastener will not accept it.
2) Is this locknut suitable for a Buy American or ARRA-funded project?
No. The JG8NYN165 is not Buy American compliant and is not ARRA compliant; country of origin is listed as multiple. On a federally funded job with domestic sourcing requirements you will need a domestically produced locknut instead.
3) Is a nylon insert locknut reusable, or should I use a serrated flange nut instead?
The JG8NYN165 locks with a nylon collar that deforms around the male thread, so it holds without marring the bolt and can be backed off and re-run a limited number of times until the nylon loses its grip. That makes it the better choice on equipment you expect to service. Where you need a one-time, higher-temperature or weld-adjacent connection, an all-metal prevailing torque or serrated flange nut is the right call, since nylon has a temperature ceiling a steel locking feature does not.
4) Does the Metallics JG8NYN165 meet a recognized dimensional standard for inspection?
It is built to ASME B18.16.6, the standard covering prevailing torque nuts, with threads to ANSI/ASME B1.1. That is the pair of references an inspector or spec writer will want for a submittal on a nylon insert locknut.
5) Will a yellow zinc plated steel locknut hold up outdoors or in a damp mechanical room?
The nut is steel with a zinc finish, yellow in color, which gives moderate corrosion protection suitable for interior and protected exterior work. For sustained wet, coastal, or washdown exposure, zinc plating will eventually sacrifice and a stainless or hot dip galvanized locknut is the better specification.
6) Is Grade 8 overkill, or do I need it for my 3/8-16 connection?
Grade 8 is the high strength class, so this nut is sized to develop the full load of a Grade 8 or equivalent high strength 3/8-16 bolt without stripping. If you are bolting into a Grade 2 or Grade 5 fastener it will still work fine, the nut is simply stronger than the joint needs. Where you are torquing a hardened bolt to spec, pairing it with a lower grade nut is the mistake, so Grade 8 is the right match.
7) How is the Metallics JG8NYN165 packaged and what is the minimum order?
These ship in a jar of 100 pieces, and 100 count is the minimum order. Good shop-cart or van-stock packaging; if you need a different size or a larger bulk quantity, Metallics offers other sizes and quantities by request.
8) What part number do I order for the 3/8-16 Metallics Grade 8 nylon insert locknut?
Order Metallics JG8NYN165, part of the JG8NYN series of hexagonal nylon insert lock nuts. One model covers this size, so there is no finish or pack option to specify beyond the 100 count jar.
How fast can I get the Metallics JG8NYN165 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 JG8NYN165 come with a warranty?
Absolutely. The Metallics JG8NYN165 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 JG8NYN165?
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 JG8NYN165 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.