Knurled washers

Knurled washers guarantee a very good lockng of screws thanks to their special conical form with knurls on both support surfaces.

Material      spring steel

Hardness         458 – 545  HV          45 x 52 HRC
 

Spring washers for screws and bolts

Use of these spring washers is recommended for locking mechanical parts, when support surfaces should not be damaged.

Material:   spring steel C60S ( C60)
                   EN 1032-1/4 ( Din 17222)

Hardness        458 – 562  HV          46 – 53  HRC