Self-Locking Washer: 1) Round type: 23mm/30mm; 2) Square type:32mm/38mm/50mm; 3) Hole:2.4mm or 2.7mm; 4)Material:Galv. sheet

Self-Locking Washer Features:

1) Round washer: 23mm / 30mm / 38mm2) Square washer: 32mm / 38mm / 50mm3) Thickness: 0.40mm4) Material: zincification steel/ ss