50 Pcs 304 Stainless Steel Square Washers 1/2 ID x 2 x 2 - Heavy Duty

Our review of these 50 Pcs 304 Stainless Steel Square Washers finds them best suited for builders, fabricators, and maintenance crews who need durable, corrosion-resistant gaskets for heavy applications. The strongest reason to buy is the material: 304 stainless steel combined with a 0.18 in (5 mm) thickness gives these washers long service life and reliable protection for connected surfaces where vibration, pressure dispersion, and appearance matter.

Key Features

• 304 stainless steel construction: Provides excellent corrosion resistance and heat strength so the washers last longer in demanding environments.
• 0.18 in (5 mm) thickness: The substantial thickness resists deformation under high clamping loads and helps distribute pressure evenly.
• Smooth finish: A clean surface appearance makes these suitable for higher-end equipment where exposed hardware must look neat.
• Square shape: Expands contact area under the nut to protect mating surfaces from damage and reduce embedment.
• Vibration buffering: The washer's size and thickness help cushion shock and reduce the tendency of nuts to loosen on vibrating equipment.
• Pack of 50: A bulk quantity for projects and maintenance tasks reduces the need for frequent reordering.

Who It's For

These square washers are a practical choice for contractors working on construction sites, machine shops fitting industrial equipment, and maintenance technicians repairing agricultural or manufacturing machinery. The combination of 304 stainless steel and a thick profile suits outdoor, corrosive, or higher-temperature settings where longevity matters.

Those who should look elsewhere include installers who need non-metallic isolation pads or springs, or users requiring extremely thin shims; this product is intentionally thick and rigid and is not designed to act as a soft insulating washer.

Pros & Cons

Pros

• Durable 304 stainless steel resists rust and maintains strength in heat and low temperatures.
• Thick 0.18 in profile reduces deformation and better distributes bolt load across the surface.
• Smooth finish allows use on visible equipment where appearance matters.
• Bulk pack of 50 is convenient for projects and routine maintenance.

Cons

• Being thick and rigid, they are not suitable when a flexible or insulating washer is required.
• Square OD may not fit recessed or countersunk areas designed for round washers.

Specifications

Material	304 stainless steel
Inner diameter	1/2 in (ID)
Outer shape	Square, 2 in x 2 in
Thickness	0.18 in (approximately 5 mm)
Quantity	50 pieces
Finish	Smooth stainless surface

Our Verdict

For anyone needing a robust, attractive square washer that minimizes surface damage and resists corrosion, this 50-piece pack is a sensible value. The 304 stainless steel and 0.18 in thickness make it especially worth choosing for outdoor, industrial, or equipment-facing applications where longevity and appearance matter.

Frequently Asked Questions

Are these washers suitable for outdoor use?
Yes. The 304 stainless steel construction provides good corrosion resistance for most outdoor environments.

Will the thickness prevent nut tightening?
The 0.18 in thickness is intended to withstand load and will not interfere with normal nut engagement when paired with appropriately sized fasteners.

Can these washers protect painted surfaces?
They help disperse pressure and reduce surface damage, but for delicate finishes consider an additional protective layer if needed.