Name: Hillman 3/8-in Stainless steel Standard Flat Washer
Brand: Hillman
SKU: 5004928243
Price: 0.45 USD
Availability: InStock
Rating: 4.8 (359 reviews)

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Stainless flat washers are great for adding resistance to your bolts and screws to prevent them from boring into the wood and weakening it. When selecting a washer, be sure to pick one that matches the fasteners you are already using. Picking a different finish may cause a chemical reaction, weakening your fasteners over time.

Stainless steel finish combines a polished look with superior protection against rust and corrosion
Designed for use specifically with SAE threaded bolts
Flat washers are used to increase the pressure a bolt or screw provides in material
Prevents a nut, bolt, or screw of the same finish and size from pulling through material
For use with a 3/8-in bolt or screw

General
Fastener Speed Code	ZAC	Material	Stainless steel
Finish	Stainless steel	Package Quantity (Count)	1

Dimensions
Washer Diameter	3/8-in	Inner Washer Diameter (Inches)	3/8-in

Certifications
CA Residents: Prop 65 Warning(s)	No

Warranty
Warranty	None

Miscellaneous
UNSPSC	31161800

Check out the Best Selling Flat Washers on Lowes.com

Review

4.8 out of 5

359 Reviews

96% Recommend this product

Ratings may include incentivized customer reviews.

Read All Reviews

What Customers Are Saying

Customers overwhelmingly praise these stainless steel washers for exceptional rust resistance, durability, and reliable performance across DIY and professional projects. Reviewers consistently highlight the corrosion-resistant material as ideal for outdoor and salt-exposed environments, describing them as maintenance-free and built to last. Most confirm the washers perform exactly as intended, fitting perfectly for mounting, repairs, and reinforcement tasks. Customers appreciate the solid construction and value for the price. A few note they were thinner than expected, but this rarely diminishes satisfaction. Overall, reviewers strongly recommend these washers for dependable, long-lasting hardware.

Customer review summary generated by AI, including incentivized reviews.

359 Customer Reviews

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Works perfectly

Would Recommend

They work perfectly

CrazyhorseSeptember 7, 2026
Verified Purchaser

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Magical washer

Would Not Recommend

The most outstanding washer we have ever used. Highly recommend

JMJRSeptember 6, 2026
From 1_SLASH_4-in Stainless steel Standard Flat Washer Verified Purchaser

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Would Recommend

Used as spacers

FayeFayeSeptember 5, 2026
From 1_SLASH_4-in Stainless steel Standard Flat Washer Verified Purchaser

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Would Recommend

The washer fit fine and worked as expected.

TonySeptember 4, 2026
Verified Purchaser

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Would Recommend

Works well with the bolt and nut

JjdiySeptember 4, 2026
From 1_SLASH_4-in Stainless steel Standard Flat Washer Verified Purchaser

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Perfect for my needs

Littlebink25September 3, 2026
From 1_SLASH_4-in Stainless steel Standard Flat Washer Verified Purchaser

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Great product!!!

Great product and worked as needed.

JuniorSeptember 2, 2026
Verified Purchaser

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17 Questions

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COMPARE PRODUCTS

		Name	Current Item Hillman3/8-in Stainless steel Standard Flat Washer
		Ratings	359
		Material	Stainless steel
		Finish	Stainless steel
		Inner Washer Diameter (Inches)	3/8-in
Hillman5/16-in Stainless steel Standard Flat Washer	Hillman3/8-in Stainless steel Standard Flat Washer	Hillman1/2-in Hot-dipped galvanized Standard Flat Washer	Hillman3/8-in Stainless steel Standard Flat Washer	Hillman3/8-in Zinc-plated Standard Flat Washer 10-Count	Hillman1/4-in Zinc-plated Standard Flat Washer 16-Count	Hillman1/2-in Stainless steel Standard Flat Washer	Hillman1/2-in Stainless steel Standard Flat Washer	Hillman5/8-in Stainless steel Standard Flat Washer
174	160	1129		639	636	80	1
Stainless steel	Stainless steel	Steel	Stainless steel	Steel	Steel	Stainless steel	Stainless steel	Stainless steel
Stainless steel	Stainless steel	Hot-dipped galvanized	Stainless steel	Zinc-plated	Zinc-plated	Stainless steel	Stainless steel	Stainless steel
5/16-in	3/8-in	1/2-in	3/8-in	3/8-in	1/4-in	1/2-in	1/2-in	5/8-in