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Top rated square washers

AI-generated summary · updated July 27, 2026 · verify details before purchase.

  1. Best overall

    Hillman 810007 1/4 x 2-1/2 Square Washer

    4.6/5 $5-$10

    Durable zinc-plated steel square washer for general fastening, widely used in woodworking and metalworking.

    • Good corrosion resistance
    • Uniform size and finish
    • Affordable bulk pack
    • Not stainless steel
    • May bend under heavy load
  2. Best value

    Everbilt 1/4 x 2 Square Washer

    4.7/5 $6-$12

    Popular square washer from Everbilt, offering a balance of price and quality for light to medium duty applications.

    • Excellent value for money
    • Consistent quality
    • Easy to find in stores
    • Limited size range
    • Not suitable for heavy loads
  3. Best budget pick

    Stanley 1/4 x 1-1/2 Square Washer

    4.5/5 $4-$8

    Budget-friendly square washer from Stanley, suitable for small projects and repairs.

    • Very low cost
    • Good for light duty
    • Nationally recognized brand
    • Thin material
    • Rusts if exposed to moisture
  4. Best bulk pack

    Unbranded 3/8 Square Washer 50 Pack

    4.4/5 $8-$15

    Economical bulk square washer pack for projects requiring many fasteners, basic quality.

    • Large quantity for price
    • Works well for general use
    • Good for temporary fix
    • Inconsistent finish
    • Not load rated
  5. Best for heavy duty

    Crown Bolt 1/2 x 3 Square Washer

    4.3/5 $10-$20

    Thick square washer from Crown Bolt designed for heavy-duty applications like framing or construction.

    • Thick and strong
    • Fits large bolts
    • Good load distribution
    • More expensive
    • Overkill for small tasks
  6. Best for structural

    Simpson Strong-Tie SQW21 Square Washer

    4.8/5 $15-$25

    Engineered square washer from Simpson Strong-Tie for use with structural fasteners and connectors.

    • High strength steel
    • Code compliant
    • Works with strong-tie products
    • Premium price
    • Limited to structural use
  7. Best for replacement

    Prime-Line F 3140 Square Washer

    4.2/5 $4-$7

    Small square washer commonly used for door and window hardware replacement.

    • Fits standard hardware
    • Inexpensive
    • Easy to install
    • Small size only
    • Not for heavy loads

Buying advice

When selecting square washers, consider the size and thickness relative to your bolt hole and load requirements. For outdoor use, choose stainless steel or coated washers to prevent rust. For structural projects, look for washers that meet code specifications. Bulk packs may save money but check consistency. Always match the washer inner diameter to your bolt size.

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