hardware washers
nord lock 21.4 2051 lock washer 316ss fits m20 3.2 mmth pk100
lock washer 316 stainless steel plain finish fits bolt sizes m20 inside dia . 21.4 mm outside dia . 39mm thickness 3.2 mm 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 . 39mm li li package quantity 100 li li size m20 li li fits bolt sizes m20 li li thickness 3.2 mm li li meets exceeds din 25201 li li rockwell hardness min . 52 hrc case hardened li li thickness tolerance 0.25 mm li ul