Name: Hillman 5/16-in x 18 Zinc-plated Steel Hex Nut Count
Brand: Hillman
SKU: 3058549
Price: 0.14 USD
Availability: InStock
Rating: 4.8 (581 reviews)

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Hex nuts are used to prevent shear movement and tension when adhering facing materials together with machine bolts. Hex nuts are commonly used in wood to wood, wood to metal, and metal to metal applications. Grade 2 zinc steel hex nuts are recommended for most general uses and are corrosion resistant. Be sure to pre-drill any holes and to use washers and bolts that are a similar grade and finish.

Hex nuts are designed to mechanically join materials by fastening to a bolt
Zinc finish offers moderate corrosion resistance
Can be installed by screwing onto exposed thread by hand and tightening with a wrench
Safe for use in most general home and commercial applications
Recommended for use with bolts and washers of a similar size and finish
Parts feature USS coarse 5/16-in-18 screw thread

General
Finish	Zinc-plated	Use Location	Interior
Manufacturer Color/Finish	Silver	Unit of Measure	Count
Type	Hex	Measure Type	Standard (SAE)
Material	Steel	Thread Type	Coarse
Package Quantity	1	Fastener Speed Code	TAB
Grade	All-Purpose	Thread Pitch	18

Dimensions
Inner Diameter Measurement	5/16-in

Features
Threading	Right hand

Warranty
Warranty	None

Certifications
ACQ Approved	No	CA Residents: Prop 65 Warning(s)	No

Miscellaneous
UNSPSC	31161700

Check out the Best Selling Hex Nuts on Lowes.com

Review

4.8 out of 5

581 Reviews

95% Recommend this product

Ratings may include incentivized customer reviews.

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What Customers Are Saying

Customers overwhelmingly praise these hardware nuts for their perfect fit, reliable performance, and consistent quality. Reviewers emphasize precise threads, secure tightening, and dependable functionality across demanding applications like TV mounts and trailer repairs. The zinc-plated and stainless-steel options are noted as durable and well-made. Many appreciate the organized displays and wide variety available. A few mention minor inconveniences like occasional missing sizes, but these isolated concerns are vastly outweighed by enthusiastic endorsements of quality and reliability.

Customer review summary generated by AI, including incentivized reviews.

581 Customer Reviews

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Need screws

Would Not Recommend

Ex Only comes in medium metal silver. Ends of threads we not machined clean. If 2mm thinker, then the extra threads will match luck number seven per side.

DmdworekJuly 10, 2026
Verified Purchaser

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nuts

Would Recommend

works

customer2658125July 10, 2026
From 3_SLASH_8-in x 16 Stainless steel Steel Hex Nut Count Verified Purchaser

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Help always there for you

I never can find the nuts washers and bolts. The sales associate was awesome. He came over into my isle and found what I needed in no time. This happens every time. Not every once in a while.

RozDawgJuly 9, 2026
From 3_SLASH_8-in x 16 Stainless steel Steel Jam Nut Count Verified Purchaser

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6 Questions

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Hillman 5/16-in x 18 Zinc-plated Steel Hex Nut Count

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Shipping

Delivery

Overview

Product Features

Specifications

General

Finish

Use Location

Manufacturer Color/Finish

Unit of Measure

Type

Measure Type

Material

Thread Type

Package Quantity

Fastener Speed Code

Grade

Thread Pitch

Dimensions

Inner Diameter Measurement

Features

Threading

Warranty

Warranty

Certifications

ACQ Approved

CA Residents: Prop 65 Warning(s)

Miscellaneous

UNSPSC

What Customers Are Saying

Community Q & A

6 Questions

Hillman: Featured Videos

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Hillman 5/16-in x 18 Zinc-plated Steel Hex Nut Count

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Delivery

Overview

Product Features

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Community Q & A

Hillman: Featured Videos

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