Prevailing torque type hexagonal thin nut with non-metallic insert ISO 10511 Brass CU2/CU346041
Prevailing torque type hexagon nut, all metal DIN 980-V Stainless steel D6 (1.4462)52020
Prevailing torque type hexagon nut with flange all metal ISO 7044 Steel Zinc Flake 1069272