Flat Washer Dimension Comparison

Flat Washer

Flat washer’s prime function as part of a fastening assembly is to spread the clamp load bearing face pressure under a bolt or nut, over a larger surface area, preventing damage. The below images contain links to table dimensional comparisons German DIN125 and other DIN standards, British BS4320 Metric and BS3410 Inch and  American ANSI B18.22 for both Inch and Metric.

 METRIC WASHERS TO DIN STANDARD             METRIC WASHERS TO BS4320            METRIC WASHERS TO AMERICAN SPEC

                                             INCH WASHERS TO BS3410                     INCH WASHERS TO AMERICAN SPEC

Flat Washer dimensional comparisons

Washer dimensional comparisons covering British BS4320 and BS3410; USA ANSI specification for both Inch flat washers and metric flat washers and European DIN flat washer standards.   

Flat washers are primarily manufactured to standard specifications in various sizes, materials and shapes. Flat washers are thin, flat and circular general-purpose washers with a centrally located hole. Internal and external forms usually are round but can be square, hexagonal or rectangular. The hole or outer diameter can be non-symmetrical depending on the function of the washer. Flat washer sizes are designated by the shank diameter of the fastener in which they form part of the assembly.

Flat washers comparisons at fastenerdata

the place to find fastener data including dimensional flat washer comparisons

washer comparison table for the UK Europe and the USA