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5/16-in x 18 Zinc-plated Steel Nylon insert Nut Count

Ratings & Reviews for Hillman 5/16-in x 18 Zinc-plated Steel Nylon insert Nut Count

4.7
1039
Review
 4.7 out of 5
1040 Reviews


95% Recommend this product

Ratings may include incentivized customer reviews.

What Customers Are Saying

Customers overwhelmingly praise these lock nuts for reliable self-locking performance, solid build quality, and excellent value. Most highlight the effective torque retention that prevents loosening under vibration, eliminating the need for additional washers. Reviewers consistently commend the precise manufacturing, describing them as true-to-size with substantial feel and durable finishes. Many note the product delivers exactly what they need at a fair price and would repurchase. A few mention minor inconveniences like packaging constraints or occasional sizing errors, but these are isolated. Overall, customers strongly endorse these nuts as dependable hardware that consistently meets expectations.

Customer review summary generated by AI, including incentivized reviews.
1040 Customer Reviews

Solid fastener

Would Recommend

Corrosion-resistant. Solid piece of metal. Does the job needed.

July 25, 2026
From 1_SLASH_4-in x 20 Zinc-plated Steel Nylon insert Nut Count Verified Purchaser
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Reduces vibration

Would Recommend

Prevents vibration with a nylon insert. Good solid hold

July 25, 2026
From 3_SLASH_8-in x 16 Zinc-plated Steel Nylon insert Nut Count Verified Purchaser
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They sent me a used non-spec nut.

Would Not Recommend

I don’t even know where you would buy this. It’s half the thickness of the standard nut, and has a beveled edge on the back side of it. I bought four for my brush cutter. Three were standard and the fourth was this. You can see where someone took a star wrench to it and stripped the top half off, that wasn’t me. You’re selling salvage nuts now Lowes? I should’ve just gone to the store myself.

July 23, 2026
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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...

Customer Service@HillmanJuly 24, 2026

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
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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
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