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MCMASTER 3/8IN SS FLAT WASHER

Description & Features

Experience reliable durability and performance with this stainless steel flat washer crafted by McMaster-Carr Supply Co. This washer's 3/8 inch size ensures a precise fit aiding in effective load distribution to prevent both equipment wear and surface damage.

Engineered to endure harsh industrial environments it boasts excellent corrosion resistance while maintaining integrity under substantial loads. The flat design ensures even pressure distribution making it ideal for use in precision equipment and machinery.

MPN: 96659A108

Supplier Part Number: 96659A108

Specifications

Brand Mcmaster-Carr Supply Co	Brand Mcaster-Carr Supply Co	Pack Size 1.00	UOM EA	Supplier Part Number 96659A108	Product Weight 0.05 lbs

Product Questions & Answers (3)

Question by: Steve P on Feb 24, 2026, 7:09 PM

these go on standard 3/8 inch bolts, right? just want to make sure before i order a bunch

Answer by: Customer Support on Feb 26, 2026, 6:16 AM

sized for 3/8 inch fasteners. The flat design spreads load evenly across the surface, so you get good contact without concentrating stress on any one spot. Works well anywhere you need to protect a surface or keep a fastener from pulling through.

Question by: Merle C on Jan 3, 2026, 2:20 PM

What's the main thing this washer is good for?

Answer by: Customer Support on Jan 5, 2026, 6:59 AM

Primarily, this stainless steel flat washer distributes load evenly, which helps prevent wear and tear on both the equipment and the surface it's against.

Question by: Lyle T on Aug 5, 2025, 7:39 AM

got a 3/8 bolt, is this washer the right size for it or am i gonna be fighting it?

Answer by: Customer Support on Aug 7, 2025, 6:02 AM

For a 3/8 inch fastener, the 3/8 inch size on this McMaster-Carr stainless flat washer is intended to give you a proper fit so it sits clean and helps spread the load.