China M20*57 Undercarriage Spare Parts Excavator Track Roller Bolts and Nuts | Track Shoe Bolts

China M20*57 Undercarriage Spare Parts Excavator Track Roller Bolts and Nuts | Track Shoe Bolts - 图片 2

China M20*57 Undercarriage Spare Parts Excavator Track Roller Bolts and Nuts | Track Shoe Bolts - 图片 3

China M20*57 Undercarriage Spare Parts Excavator Track Roller Bolts and Nuts | Track Shoe Bolts - 图片 4

China M20*57 Undercarriage Spare Parts Excavator Track Roller Bolts and Nuts | Track Shoe Bolts - 图片 5

China M20*57 Undercarriage Spare Parts Excavator Track Roller Bolts and Nuts | Track Shoe Bolts

Material：40Cr /35CrMo

Process：Hot punch, cold punch

Surface Hardness：10.9/12.9

Color：gray, black

Dimensions：M20 * 1.5*56