Prices, Promotions, styles, and availability may vary. Our local stores do not honor online pricing. Prices and availability of products and services are subject to change without notice. Errors will be corrected where discovered, and Lowe's reserves the right to revoke any stated offer and to correct any errors, inaccuracies or omissions including after an order has been submitted.

5/16-in x 24 Zinc-plated Steel Nylon insert Nut 2 Count

Ratings & Reviews for Hillman 5/16-in x 24 Zinc-plated Steel Nylon insert Nut 2 Count

4.7
1096
See Product Details
Review
  4.7 out of 5
1096 Reviews


95% Recommend this product

Ratings may include incentivized customer reviews.

What Customers Are Saying

Customers overwhelmingly praise these lock nuts for exceptional locking performance, solid build quality, and outstanding value. The nylon locking feature consistently prevents loosening under vibration and torque, outperforming traditional lock washers. Reviewers highlight precise sizing, consistent threading, and perfect fit for mounting hardware and gate locks without modification. Many emphasize dependable performance, affordability, and strong repurchase intent. A few report isolated issues like receiving wrong sizes, but these are rare and do not reflect a pattern of failure.

Customer review summary generated by AI, including incentivized reviews.
1096 Customer Reviews

I worked.

Perfect, just what I needed. Only needed 1.

July 15, 2026
From 1_SLASH_2-in x 20 Zinc-plated Steel Nylon insert Nut 2 Count Verified Purchaser
Was this Review Helpful ?

Would Recommend

It was a fine-threaded nut which is very hard to find

July 8, 2026
From 4mm x 0.7 Zinc-plated Steel Nylon insert Nut 8 Count Verified Purchaser
Was this Review Helpful ?

Speed Code did not work, wasted my time.

 Would Recommend

I selected 12 Stop Nuts, placed them in the bag provided and wrote the TFU Speed Code on the bag. When I checked out the cashier said the Speed Code did not work! She tried locating the bar code in a folder but could not find it. I had to trek all the way back to their location a take a pic of fhe bar code. Very frustrating experience!!!

July 6, 2026
From 1_SLASH_4-in x 20 Zinc-plated Steel Nylon insert Nut Count Verified Purchaser
Was this Review Helpful ?
Response from Customer Service@Hillman

We are very sorry to hear that this product was unsatisfactory and did not meet your expectations. We understand how disappointing that can be. Pleas... Read More

Customer Service@HillmanJuly 6, 2026

Zinc lock nuts

 Would Recommend

I bought these for the bolts, perfect fit. They're locknuts too. I have used them ind the past and the zinc coating is resistant to rusting and corrosion.

July 5, 2026
From 1_SLASH_4-in x 20 Zinc-plated Steel Nylon insert Nut Count Verified Purchaser
Was this Review Helpful ?

Stainless #6 locknuts

 Would Recommend

These fit a Metric bolt perfect!!! Very well made locknuts.

July 5, 2026
From 6mm x 1.00 Zinc-plated Steel Nylon insert Nut 4 Count Verified Purchaser
Was this Review Helpful ?

nuts and bolts

 Would Recommend

good quality

June 30, 2026
From 6mm x 1.00 Zinc-plated Steel Nylon insert Nut 4 Count Verified Purchaser
Was this Review Helpful ?

Doesnt stay tight

It does not stay tight

June 24, 2026
From 6mm x 1.00 Zinc-plated Steel Nylon insert Nut 4 Count Verified Purchaser
Was this Review Helpful ?
Response from Customer Service@Hillman

Thank you for your feedback, we have noted your feedback and are reviewing possible options to improve this product1Page 2Page 3Page 10