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Hillman 5/16-in Stainless steel Steel Split Lock Washer

Name: Hillman 5/16-in Stainless steel Steel Split Lock Washer
Brand: Hillman
SKU: 1000363987
Price: 0.48 USD
Availability: InStock
Rating: 4.7 (70 reviews)

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4.7

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Sat, Oct 17

2,182 available

Delivery

Sat, Oct 17

146 available

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Engineered to provide more uniform load distribution, split lock washers are great for any indoor/outdoor project. Ideal for situations where potential loosening from corrosion or vibration is a concern, split lock washers are used to prevent nuts and bolts from coming loose. These fasteners contain split ends that help "lock" into the mating material, thus providing a locking feature when tightened beneath a nut. The 18-8 stainless steel finish offers good corrosion resistance. Use with treated lumber in applications with like nuts and bolts of similar diameter.

Commonly used in applications using a bolt or a screw where two pieces are being joined together
Split ends grip the material surface to prevent loosening during vibration
18-8 Stainless steel finish for good corrosion resistance
Use with like nuts and bolts of similar diameter
For use with any indoor or outdoor project with treated lumber

General
Finish	Stainless steel	Material	Steel
Type	Split	Fastener Speed Code	ZBL
Package Quantity (Count)	1

Dimensions
Washer Diameter	8mm	Inner Washer Diameter (Inches)	5/16-in

Certifications
CA Residents: Prop 65 Warning(s)	No

Warranty
Warranty	None

Miscellaneous
UNSPSC	31161800

Check out the Best Selling Lock Washers on Lowes.com

Review

4.7 out of 5

70 Reviews

89% Recommend this product

Ratings may include incentivized customer reviews.

What Customers Are Saying

Customers overwhelmingly praise this split lock washer for reliable performance and durable stainless steel construction. Reviewers consistently report it prevents bolts from loosening under vibration and stress, works exactly as intended across diverse applications like ATVs and lawn mowers, and maintains tension over time. The stainless steel resists rust and suits outdoor use, with customers noting it's a significant improvement over cheaper alternatives. Most highlight perfect fit, correct dimensions, and proper split design. Many appreciate the excellent value for quality stainless steel. Overall, reviewers express strong satisfaction and recommend it for dependable, long-lasting performance.

Customer review summary generated by AI, including incentivized reviews.

70 Customer Reviews

Sort By

Good Washers

Would Recommend

Good Washers

DIYerSeptember 16, 2026
From 5_SLASH_16-in Stainless steel Steel Split Lock Washer Verified Purchaser

Was this Review Helpful ?

Washer with split in it

Would Recommend

Lock washer worked well. It has a split in it and slightly twisted to apply pressure to nut so it doesnt back out. It has a hole in the middle for a bolt to go through and strong enough to get the job done. Finish was nice. Working well for my project so far and don't expect any problems from it later on

JeremyAugust 8, 2026
From 5_SLASH_16-in Stainless steel Steel Split Lock Washer Verified Purchaser

Was this Review Helpful ?

Priced right

Works well

BriguyJune 23, 2026
Verified Purchaser

Was this Review Helpful ?

Stainless washers

Would Recommend

Was what I needed and they work great.

ArchJune 14, 2026
From 5_SLASH_16-in Stainless steel Steel Split Lock Washer Verified Purchaser

Was this Review Helpful ?

easy to use

Would Recommend

Threads good, perfect size for wheel barrow replacements

runnerJune 4, 2026
From 5_SLASH_16-in Stainless steel Steel Split Lock Washer Verified Purchaser

Was this Review Helpful ?

but in bulk our singles

Would Recommend

it was what i needed

mikeMay 27, 2026
From 5_SLASH_16-in Stainless steel Steel Split Lock Washer Verified Purchaser

Was this Review Helpful ?

Good product

Would Recommend

Perfect size

TinaMay 23, 2026
From 5_SLASH_16-in Stainless steel Steel Split Lock Washer Verified Purchaser

Was this Review Helpful ?

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