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8.8 grade external six corner screw / bolt / screw / screw complete tooth half tooth M12*30/35/40/45/50-120

discount 70% in 2018-09-19 to 2018-09-21
price: USD$ 3.50
freight :USD$18.00,(Express)
freight :USD$7.00,(Postal parcel)
Minimum Order Quantity:3
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Product Name:8.8 stage high strength outer six corner bolt (M12 series 


Material: carbon steel surface treatment: blackening mechanical strength: grade 8.8

The six angle bolts by 45# steel by cold forging machine to create thread rolling clear Cathy after heat treatment hardening process, the

The hardness of the screw is very high and the stability is good. The surface is not easy to rust by blackening. If large, you can contact the store to discount oh!