Stainless Steel Flat Washers Flat washers are a thin, flat, circular stamping with a centrally located hole, made from 18-8 austenitic stainless steel. Designed for use with stainless steel screws and nuts in general applications where parts are subject to corrosion. These general purpose commercial standard flat washers are positioned under a nut, head of a screw, or head of a bolt in order to provide a smooth bearing surface and evenly distribute the fastener load over a wider area. Detailed Product Information Select Desired Washer Size In Drop Down Menu To View Full Detailed . General Product Information Nominal Washer Size Outside Diameter Thickness Minimum Thickness Maximum #0 0.156" 0.005" 0.024" #1 0.1875" 0.017" 0.019" #2 0.250" 0.018" 0.032" #3 0.250" 0.018" 0.032" #4 0.250" 0.025" 0.040" #5 0.281" 0.025" 0.040" #6 0.375" 0.025" 0.040" #8 0.375" 0.025" 0.040" #10 0.438" 0.025" 0.040" #12 0.500" 0.033" 0.057" 1/4" 0.625" 0.043" 0.057" 5/16" 0.750" 0.043" 0.057" 3/8" 0.875" 0.043" 0.057" 7/16" 1.125" 0.055" 0.069" 1/2" 1.125" 0.055" 0.069" 9/16" 1.062" 0.050" 0.080" 5/8" 1.50" 0.071" 0.085" 3/4" 1.750" 0.099" 0.119" 7/8" 2" 0.102" 0.116" 1" 2" 0.118" 0.132" 1-1/8" 2.50" 0.118" 0.132" 1-1/4" 2.750" 0.118" 0.132" 1-1/2" 2.750" 0.133" 0.147" 1-3/4" 3.50" 0.133" 0.147" 2" 4" 0.180" 0.194" Shipping: All orders placed before 3:30 pm EST Will Ship Same Day Tracking is provided on ALL Orders Priority Mail Shipping service is offered at a discount of only $3.95 UPS Ground UPS Next Day Air is available, Please inquire for pricing Returns : ALL returns are accepted if returned within 60 days. Money Back or exchange guaranteed. NO Restocking Fees. For YOU, we constantly strive to find ways of improving our performance.