Top rated countersunk washers

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

1. 1 Best overall

   Hillman Group 440000 1/4" Countersunk Flat Washer, 100-Pack

   ★★★★★4.7/5 $5-$8

   High-quality zinc-plated steel washers with a consistent countersink angle, perfect for standard fastening needs.

   • Durable zinc plating
   • Accurate countersink
   • Good value pack

   • May rust if exposed to moisture

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2. 2 Best budget pick

   Everbilt 1/2" Countersunk Flat Washer, 50-Pack

   ★★★★☆4.5/5 $4-$7

   Affordable stainless steel washers that resist corrosion, ideal for light-duty applications.

   • Low price
   • Rust resistant
   • Easy to find

   • Thinner than premium options

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3. 3 Best variety

   Stainless Steel Countersunk Washer Assortment Kit, 180-Pack

   ★★★★★4.6/5 $10-$15

   Includes multiple sizes from #6 to 5/8" in a reusable case, offering great versatility for projects.

   • Wide size range
   • Reusable case
   • 304 stainless steel

   • Some sizes may be less used

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4. 4 Professional grade

   GRAINGER APPROVED Countersunk Flat Washer, 3/8", 100-Pack

   ★★★★☆4.4/5 $9-$12

   Heavy-duty zinc-plated washers with tight tolerances, suitable for industrial applications.

   • Precise dimensions
   • Strong material
   • Reliable brand

   • Higher price per piece

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5. 5 Small hardware

   Prime-Line 9194741 Countersunk Flat Washer, #10, 25-Pack

   ★★★★☆4.3/5 $3-$5

   Compact pack of zinc-plated steel washers for small screws and light assemblies.

   • Compact size
   • Good finish
   • Affordable

   • Small quantity

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6. 6 Medium duty

   National Hardware N267-213 Countersunk Flat Washer, 5/16", 50-Pack

   ★★★★☆4.5/5 $6-$9

   Zinc-plated steel washers with a smooth finish, ideal for general construction and DIY.

   • Smooth edges
   • Consistent quality
   • Trusted brand

   • Not stainless

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7. 7 Corrosion resistance

   3/8" Countersunk Flat Washer Stainless Steel, 100-Pack

   ★★★★★4.6/5 $12-$16

   Marine-grade 316 stainless steel washers, excellent for outdoor or high-moisture environments.

   • Superior corrosion resistance
   • 100-pack value
   • High strength

   • More expensive

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