Hillman 5/8 in. Zinc-Plated Steel USS Nylon Lock Nut, 25-Pack
SKU: 20370824665

Hillman 5/8 in. Zinc-Plated Steel USS Nylon Lock Nut, 25-Pack

Sale price$16.64 Regular price$18.49
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Description

Hillman 5/8 in. Zinc-Plated Steel USS Nylon Lock Nut, 25-Pack5 8 in. Zinc Plated Nylon Lock Nuts (25 Pack) These Hillman USS nylon lock nuts provide secure, vibration resistant fastening for heavy duty projects. Made of steel with a zinc plated finish, they offer corrosion protection and a reliable hold thanks to the compressible nylon insert. Key Features: Vibration Resistant Hold: Nylon insert locks the nut in place without a lock washer Corrosion Protection: Durable zinc plated steel construction for long

5/8 in. Zinc-Plated Nylon Lock Nuts (25-Pack)

These Hillman USS nylon lock nuts provide secure, vibration-resistant fastening for heavy-duty projects. Made of steel with a zinc-plated finish, they offer corrosion protection and a reliable hold thanks to the compressible nylon insert.


Key Features:

  • Vibration-Resistant Hold: Nylon insert locks the nut in place without a lock washer
  • Corrosion Protection: Durable zinc-plated steel construction for long-lasting performance
  • Coarse Thread Compatibility: 5/8-11 USS thread fits standard coarse-thread bolts
  • Project-Ready Pack: Convenient 25-piece boxed package
  • Versatile Use: Ideal for automotive, machinery, and structural applications

Specifications Table:

Specification Details
Brand Name Hillman
Callout Size 5/8 inch
Thread Size 5/8-11
Thread Type Coarse (USS)
Finish Zinc Plated
Material Steel with nylon insert
Unit of Measurement USS
Number in Package 25
Packaging Type Boxed
Package Height 2 in
Package Width 4.5 in
Package Length 3.5 in
Package Weight 2.1 lbs

Frequently Asked Questions (FAQ):

Q: What thread size do these nuts fit?
A: They fit 5/8-11 coarse (USS) thread bolts.


Q: Do I still need a lock washer?
A: No. The nylon insert provides locking action, eliminating the need for a lock washer.


Q: Are they suitable for outdoor use?
A: Yes. The zinc-plated finish helps resist corrosion, making them suitable for indoor and outdoor applications.


Q: How many nuts are included?
A: 25 pieces per retail package.


Q: What material are the nuts made from?
A: Steel nuts with a zinc-plated finish and nylon insert.


A Polished, Industrial Essential

These zinc-plated lock nuts add a subtle, gleaming precision to any build, marrying rugged steel with a chic metallic finish. The nylon insert is the quiet hero—streamlined, secure, and resilient against vibration. Style them with black oxide bolts for a striking contrast and a clean, architectural look. A small detail with big impact, they’re indispensable for refined, sturdy construction.


Secure your projects with dependable, corrosion-resistant locking—add this 25-pack of Hillman nylon lock nuts to your cart today.

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 20370824665

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Verified Purchase
Jason Brown
Massapequa, US
★★★★★ 1
A total joke.
Pattern Name: Cage Ball, Size: Large - 4 Inch / 8.5 oz
I was so hopeful and really wanted this to be as good as the sellers claimed. After all, they boast of a lifetime replacement (a joke and be sure to read the ridiculous terms lol). I have a "pocket pitty" and she loves rubber toys. There is not much I have found that can withstand her force; however, reading reviews AND seeing their warranty, I wanted to give it a try. Typically, I stick with Java wood and XL super dense knotted ropes, as that has been the only thing that can last any real amount of time. Thankfully, she never goes after our stuff or household items/furniture, just her toys. The ball arrived. I checked it over. It looked semi promising. I was hopeful. The design does allow for them to leverage their paw strength by getting it between the rubber bars and then pull with their teeth. Within 3 minutes of her having it, she already had a bar ripped off. Within 5 minutes, she had 3 bars ripped off. Don't get me wrong, she had a blast. But this is by no means strong enough for an actual aggressive chewer. Perhaps there is just not anything rubber that can handle her jaws, but now I can't get a replacement because the warranty only covers if the product is defective. It doesn't cover chewing damage (on any of their products). The advertising is very misleading so be aware. Why a replacement if she will just destroy it again you may wonder? She loves to go after a ball, but now I know she can kill this one, I keep them in a drawer and only let her play fetch with it while supervised. I will say though, I you have a puppy, I think this would be great for them as long as they are not extra large. The material has give, which is nice. But if you have a real aggressive chewer, don't waste the money.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 7, 2023
T
Verified Purchase
TERESA
Louisville, US
★★★★★ 4
Not indestructible, but is very tough.
Pattern Name: Ball, Size: Large - 3 Inch / 12 oz
My dog destroyed this, but it took a little longer than it usually does. Would love to know how the lifetime replacement works. There is no information that I see on how to contact the seller.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 8, 2025
D
Verified Purchase
Diane Knickerbocker
Draper, US
★★★★★ 5
Would buy again
Pattern Name: Cage Ball, Size: Large - 4 Inch / 8.5 oz
This is a great ball! Both my dogs love it. Queensland is a heavy chewer and I can see no damage. Catahoula loves to fetch and kick after kick and retrieval this ball shows no wear. It’s easy to pick up and is a good size for my dogs.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 11, 2025
L
Verified Purchase
Laura Hein
Bozeman, US
★★★★★ 5
Very Durable Ball
Pattern Name: Cage Ball, Size: Large - 4 Inch / 8.5 oz
This ball has held up to regular puppy chewing for 3 months now. At first I was worried my retriever would get her mouth stuck in it, but it hasn't been a problem since she has gotten bigger. Supervision required for smaller pups. One thing to note is that the ball was shipped with a strong rubber smell, but that has gone away with use and washing. Super easy to clean! It is a heavier ball making it bounce well and it doesn't damage the walls. Super durable. She's been chewing on it every day and there is no damage to it at all. The scratches, holes, or pieces missing. It's stayed intact for months!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on October 6, 2023
D
Verified Purchase
dellanney maxwell snyder
Lake Worth, US
★★★★★ 3
Good ball, but not really for super chewers
Pattern Name: Ball, Size: Large - 3 Inch / 12 oz
This ball is tough...my (foster) dog is tougher. It is a heavy rubber ball, but my Staffordshire bull terrier is able to destroy these balls within about a couple of hours. We never let him chew on these unmonitored. If you have a moderate chewer, this is probably ok for your dog; for any super chewers, you might want to pass. We first bought one of these balls when we learned our foster dog (fresh out of the shelter) had heartworms. We knew we had to keep him occupied somehow, and it is by far his favorite toy (he loves the doughnut-shaped toy as well). We bought MANY of these during his heartworm treatment. Now that he is done with his treatment we won't buy any more of these. They are expensive for what they are. And just be aware that the lifetime warranty only applies to material or manufacturing flaws...not the actual toughness of the product.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 16, 2025

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