hardware washers
nord lock 21.4 1051 lock washer 316 ss fits m20 3mm th pk100
lock washer 316 stainless steel plain finish fits bolt sizes m20 inside dia . 21.4 mm outside dia . 30.7 mm thickness 3mm thickness tolerance 0.25 mm rockwell hardness min . 52 hrc case hardened meets exceeds din 25201 package quantity 100 br b features b ul li finish plain li li inside dia . 21.4 mm li li item lock washer li li material 316 stainless steel li li outside dia . 30.7 mm li li package quantity 100 li li size m20 li li fits bolt sizes m20 li li thickness 3mm li li meets exceeds din 25201 li li rockwell hardness min . 52 hrc case hardened li li thickness tolerance 0.25 mm li ul