DIN SIZE DESCRIPTION Material 981 KM1 12X1 LOCK NUT 45# steel 981 KM2 15X1 LOCK NUT 45# steel 981 KM3 17X1 LOCK NUT 45# steel 981 KM4 20X1 LOCK NUT 45# steel 981 KM5 25X1.5 LOCK NUT 45# steel 981 KM06 30X1.5 LOCK NUT 45# steel 981 KM07 35X1.5 LOCK NUT 45# steel 981 KM08 40X1.5 LOCK NUT 45# steel 981 KM09 45X1.5 LOCK NUT 45# steel 981 KM10 50X1.5 LOCK NUT 45# steel 981 KM11 55X2 LOCK NUT 45# steel 981 KM12 60X2 LOCK NUT 45# steel 981 KM13 65X2 LOCK NUT 45# steel 981 KM14 70X2 LOCK NUT 45# steel 981 KM15 75X2 LOCK NUT 45# steel 981 KM16 80X2 LOCK NUT 45# steel 981 KM20 100X2 LOCK NUT 45# steel 981 KM04 20X1 NYLON INSERT LOCK NUT 45# steel 981 KM04 20X1.5 NYLON INSERT LOCK NUT 45# steel 981 KM05 25X1.5 NYLON INSERT LOCK NUT 45# steel 981 KM06 30X1.5 NYLON INSERT LOCK NUT 45# steel 5406 MB01 LOCK WASHER cold rolled sheet 5406 MB02 LOCK WASHER cold rolled sheet 5406 MB03 LOCK WASHER cold rolled sheet 5406 MB04 LOCK WASHER cold rolled sheet 5406 MB05 LOCK WASHER cold rolled sheet 5406 MB06 LOCK WASHER cold rolled sheet 5406 MB07 LOCK WASHER cold rolled sheet 5406 MB08 LOCK WASHER cold rolled sheet 5406 MB09 LOCK WASHER cold rolled sheet 5406 MB10 LOCK WASHER cold rolled sheet 5406 MB11 LOCK WASHER cold rolled sheet 5406 MB12 LOCK WASHER cold rolled sheet 5406 MB13 LOCK WASHER cold rolled sheet 5406 MB14 LOCK WASHER cold rolled sheet 5406 MB15 LOCK WASHER cold rolled sheet 5406 MB16 LOCK WASHER cold rolled sheet 5406 MB20 LOCK WASHER cold rolled sheet