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

Name: Hillman 5/16-in x 18 Galvanized Steel Hex Nut Count
Brand: Hillman
SKU: 3037543
Price: 0.35 USD
Availability: InStock
Rating: 4.8 (3082 reviews)

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4.8

3082

Inner Diameter Measurement: 5/16-in

Finish: Galvanized

$0.35

Package Quantity: 1

Thread Pitch: 18

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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. Galvanized zinc 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
Galvanized zinc finish offers high resistance to corrosion in exterior applications
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
Parts conform to ASTM A153 specification

General
Finish	Galvanized	Use Location	Exterior
Manufacturer Color/Finish	Gray	Unit of Measure	Count
Type	Hex	Measure Type	Standard (SAE)
Material	Steel	Thread Type	Coarse
Package Quantity	1	Fastener Speed Code	VAB
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)	Prop 65 WARNING(S) -

Miscellaneous
UNSPSC	31161700

Check out the Best Selling Hex Nuts on Lowes.com

Review

4.8 out of 5

3082 Reviews

95% Recommend this product

Ratings may include incentivized customer reviews.

Read All Reviews

+ 39

What Customers Are Saying

Customers overwhelmingly praise these hex nuts for reliable performance and consistent quality. Most highlight perfect fit with bolts, clean well-formed threads, and secure holding without issues. Reviewers commend the galvanized finish for rust resistance and emphasize strength in demanding applications. The quality construction and value proposition resonate strongly, with many stating they would purchase again. A very small number report isolated manufacturing concerns, but these represent negligible feedback compared to the dominant positive experience.

Customer review summary generated by AI, including incentivized reviews.

3082 Customer Reviews

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Gets the job done at a great price

Would Recommend

Good quality threads are high quality as well did the job I needed them for perfect.

July 1, 2026
From 1_SLASH_4-in x 28 Zinc-plated Steel Hex Nut 4 Count Verified Purchaser

Was this Review Helpful ?

They will do for now

Would Recommend

I was looking for this size in a flange nut but it was not available in this thread count. They were available in 5/16" x 18 and in metric sizes so I'm somewhat baffled why they weren't available in the 5/16" x 24. I purchased them anyway to get my task done and I ordered what i needed online through a different supplier and will replace these when my order comes in.

rare57June 30, 2026
From 5_SLASH_16-in x 24 Zinc-plated Steel Hex Nut 4 Count Verified Purchaser

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57 Questions

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

Shop Hillman

Pickup

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

57 Questions

Hillman: Featured Videos

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

Shop Hillman

Pickup

Shipping

Delivery

Overview

Product Features

Specifications

Community Q & A

Hillman: Featured Videos

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