SKU: 90438694003

Hillman 5/16 in. Stainless Steel SAE Nylon Lock Nut, 50 Pack

Sale price$19.79 Regular price$21.99
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Description

Hillman 5/16 in. Stainless Steel SAE Nylon Lock Nut, 50 Pack5 16" Stainless Steel Nylon Lock Nuts (50 Pack) These Hillman SAE nylon lock nuts feature a durable 18 8 stainless steel construction with a compressible nylon insert to resist vibration and prevent loosening. Ideal for outdoor and marine applications, they deliver best in class corrosion resistance and secure fastening for 5 16 18 coarse threads. Key Features: Corrosion Resistant: 18 8 stainless steel for long lasting performance in harsh

5/16" Stainless Steel Nylon Lock Nuts (50-Pack)

These Hillman SAE nylon lock nuts feature a durable 18-8 stainless steel construction with a compressible nylon insert to resist vibration and prevent loosening. Ideal for outdoor and marine applications, they deliver best-in-class corrosion resistance and secure fastening for 5/16-18 coarse threads.


Key Features:

  • Corrosion Resistant: 18-8 stainless steel for long-lasting performance in harsh environments
  • Secure Hold: Nylon insert locks threads to prevent loosening from vibration—no lock washer needed
  • SAE Coarse Thread: 5/16-18 thread size fits common hardware and fasteners
  • Bulk Convenience: 50-pack for projects, maintenance, and inventory needs
  • Clean Finish: Stainless steel appearance complements professional installations

Specifications Table:

Specification Details
Callout Size 5/16 inch
Thread Size 5/16-18
Thread Type Coarse
Unit of Measurement SAE
Material 18-8 Stainless Steel
Finish Stainless steel
Insert Material Nylon
Number in Package 50 pack
Packaging Type Boxed
Features Nylon insert stop nut; resists loosening due to vibration; best-in-class corrosion resistance

Frequently Asked Questions (FAQ):

Q: What thread size do these lock nuts fit?
A: They are 5/16-18 SAE coarse thread.


Q: Are these suitable for outdoor or marine use?
A: Yes. The 18-8 stainless steel provides excellent corrosion resistance for outdoor and damp environments.


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


Q: What tools are required for installation?
A: Use a standard wrench or socket sized for 5/16" nuts; tighten until the nylon insert engages the threads.


Q: How many nuts are included?
A: A total of 50 lock nuts are included in the pack.


Sleek, Stainless Precision for Timeless Hardware Details

These stainless nylon lock nuts bring polished restraint to functional detailing, marrying industrial strength with refined simplicity. The satin steel and crisp nylon ring feel modern and purposeful, creating a cohesive look across fixtures and furnishings. Use them to elevate exposed hardware on shelving, benches, or outdoor pieces where the finish matters. A small yet essential touch that anchors luxury with reliability.


Secure your projects with corrosion-resistant confidence—add this 50-pack of Hillman stainless 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: 90438694003

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Piano Man
Charlottesville, US
★★★★★ 1
Made mostly of POLYPROPYLENE PLASTIC and should not be injested.
Size: 8 Inch - 2 Pack, Color: Tree Branch
BAD PRODUCT. DO NOT BUY THESE FOR YOUR DOG. They are made mostly of POLYPROPYLENE PLASTIC. It even says on the package - "CAUTION: Product is not intended to be eaten or ingested. If you believe your pet has swallowed a piece, please take away and contact veterinarian if needed. Our dachshund went to town on one of these and had diarrhea for two days and cost us several hundred dollars in vet bills to do x-rays and medicine for the poor dog. What do you think a dog is going to do with a dog chew? Just find another product. This one isn't worth it.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 26, 2026
A
Verified Purchase
Amazon Customer
Lake Worth, US
★★★★★ 5
Loved by both my pup and I! I can't say enough good things!!
Size: Large, Number of Items: 1
My lab puppy absolutely loves this! And so do I. My 5 month old lab puppy loves to play with us and is not so good at playing by himself. Though he is getting a little better. I use this when we need to keep him occupied or when we need a little break. I bought this for him when we first got him at about 2 months old; even then he had no problems figuring it out. Depending on how much food I put in it, this will keep him busy for quite awhile. My puppy does not usually have much of an attention span, he is always jumping from one toy, bone, or chew to another. But with this I know I can consistently depend on him being entertained for at least 15 to 30 minutes, again, depending on how much food I put in there. "Bob" as we call him, is very well made. I purchased the large one and it holds about 2 cups of food. The yellow top screws off so that you can pour the food in, there is an adjustable opening so if you want to make it harder for your dog you can adjust it and he will have to work harder to get the food out. It screws on quite tight and has never come off while my dog is playing with it even when he carries it around by the top. There is another opening towards the bottom where the food comes out that is also adjustable depending on how easy you want it to be or how big the food is that you are using. Both openings are pretty large and I have never had an issue with putting things in there. I know some people use it to put their dog's food in, as my dog is self fed I have never done that. But I do use Cheerios and all kinds of other cereals and treats but mainly I use other "special" dog foods. I buy moist and dry dog foods that look like they may taste good and use them as treats. My dog thinks he is getting treats and never knows the difference, he loves them. It's healthier than feeding him lots of treats and also a lot cheaper. Using the "Bob" not only keeps him independently entertained but also helps to tire him out. It can be a bit loud as I have tile floors but it is not that bad. It is constructed extremely well. My pup plays very rough with it, he bats it around into walls, furniture etc., drops it down steps, it has taken a beating but it has stood up to my dog's abuse, where many of his other toys have not made it. It is very easy to clean. I plan on purchasing another one for my sister-in-law's pig. She is 70 pounds over weight and hates to move around but obviously loves food. I think that putting her food inside will be just the motivation she needs. And it is so well made that I don't have to worry about giving it to her!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on August 10, 2014
T
Verified Purchase
Tillea Hurinenko
Louisville, US
★★★★★ 5
Favorite toy
Size: Small, Number of Items: 1, Size: Small, Number of Items: 1
This is my dog’s absolute favorite toy. When I fill it, it’ll keep him busy for up to an hour, and even when I don’t fill it, he likes to tip it around to check for missed treats quite often. It’s super sturdy, and just the right size for him (20 lb mini schnauzer).
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Reviewed in the United States on April 18, 2026
J
Verified Purchase
Jessica Ward
Battle Creek, US
★★★★★ 5
Perfect Enrichment for my Puppy
Size: Small, Number of Items: 1
Amazing!! Super durable and exactly what I was looking for! My dog loves this and it keeps him very busy! It fits about half a cup inside and can be used anywhere.
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Reviewed in the United States on June 1, 2026
G
Verified Purchase
Gerald B
Massapequa, US
★★★★★ 4
Can't be clean but provides fun.
Size: Small, Number of Items: 1
It's well made and our pup really does like it. The only thing is, it doesn't fully open to clean it out. I wouldn't buy it again for that fact. It's tough plastic and sturdy.
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Reviewed in the United States on April 13, 2026

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