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Nuts 5/8-18 G8 Hx Ny-Ins FT Locknut St-zn (Jar 100)
Features
- Made to American Standard Dimensions
Additional Notes
- Other sizes and quantities available by request
Manufacturer Resources
Product Specs
- Arra Compliant:
- C
- Buy American Compliant:
- C
- Dimensional Standard:
- ASME B18.16.6
- Division:
- Electrical H1
- Fastener Head Height:
- 0.735 - 0.765 in.
- Fastener Head Width:
- 0.922 - 0.940 in.
- Fastener Height:
- 0.593
- Field Application:
- Width is Wrench Size
- Grade:
- 8
- Language Code:
- EN
- Neurspe:
- https://ideadigitalasset.com/DAMRoot/Original/10035/11237_ID-SPE-v1-ID-SPE-v1-Hex_Nylon_Insrt_Lck_Nut_Gr_8_Fine_Thrd_St-Zn.pdf
- Order Minimum Imperial:
- 100
- Order Minimum Uom Imperial:
- CT
- Pack Type:
- Jar
- Product Group:
- Fasteners
- Product Height:
- 7.25 in
- Product Length:
- 4.5 in
- Product Weight:
- 8.44 lbs
- Product Width:
- 4.5 in
- Sub Division:
- Electrical-E H2
- Thread Direction:
- Right Hand
- Thread Per Inch:
- 18
- Thread Standard:
- ANSI/ASME B1.1
- Thread Type:
- UNF
- Department:
- Electrical
- Product Subgroup:
- Nuts
- Product Type:
- Hexagonal Nylon Insert Lock Nut
- Type2:
- Hexagonal Nylon Insert Lock Nut
- Series:
- JNYN
- Product Finish:
- Zinc
- Product Details:
- Hexagonal Nylon Insert Lock Nut
- Product Color:
- Silver
- Product Material:
- Steel
Metallics JNYNF167 – Frequently Asked Questions
1) Will the Metallics JNYNF167 locknut thread onto a 5/8-18 fine thread bolt?
Yes. The JNYNF167 is a 5/8-18 UNF nut, 18 threads per inch, right hand, cut to ANSI/ASME B1.1. It will not run onto a 5/8-11 coarse bolt, so check the bolt thread pitch before you order. Fine thread gives more threads in engagement, which is why it shows up on vibration-prone equipment and machine bolting.
2) Is the JNYNF167 a Grade 8 nut, and can I use it with Grade 8 bolts?
It is a Grade 8 steel nut, so it matches the strength class of Grade 8 bolting rather than dragging the joint down to a lower-grade nut. Body is steel with a zinc finish, silver in appearance.
3) Do these Metallics locknuts qualify for Buy American and ARRA jobs?
Metallics lists the JNYNF167 as both Buy American compliant and ARRA compliant, which is what a public works or federally funded job will ask for on the submittal. Country of origin is recorded as multiple.
4) What wrench or socket size do I need for these 5/8-18 nylon insert locknuts?
Across the flats the nut measures 0.922 to 0.940 in., and Metallics notes that the width is the wrench size. That puts it at a 15/16 in. wrench or socket. Overall nut height runs 0.735 to 0.765 in.
5) Can nylon insert locknuts be reused, or do I need new ones every time I take the joint apart?
The locking in a nylon insert nut comes from the nylon collar deforming around the bolt threads. That collar loses grip each time it is run on and off, so for anything holding load, plan on fresh nuts at reassembly. That is part of why the JNYNF167 is sold 100 to a jar rather than in small counts.
6) Are these nylon insert locknuts OK in a high heat location?
The locking element is nylon, not metal, so these are for ambient and moderate temperature service. For hot work, exhaust, boiler, or anything near a flame, use an all-metal prevailing torque or distorted thread locknut instead. Zinc plating also makes the JNYNF167 a general indoor and sheltered outdoor part rather than a marine or heavy chemical exposure fastener.
7) What dimensional standard do these hex nylon insert locknuts meet?
They are made to ASME B18.16.6, the standard for prevailing torque nuts, with threads to ANSI/ASME B1.1. If your drawing calls out a B18.16.6 hex nylon insert nut in 5/8-18 Grade 8, the JNYNF167 answers it.
8) How many nuts come in a jar and how much does it weigh?
The JNYNF167 ships as a jar of 100, with a minimum order of 100 count. The jar weighs 8.44 lbs and measures 7.25 in. by 4.5 in. by 4.5 in., so a few jars stack fine on a van shelf.
How fast can I get the Metallics JNYNF167 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 JNYNF167 come with a warranty?
Absolutely. The Metallics JNYNF167 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 JNYNF167?
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
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