hex head bolt 1.Surface:black,phosphated,galvanized.. 2.Grade:4.8,8.8,10.9,12.9 3:Material:mild steel,45# steel,40Cr,42CrMo

Material	Grade	Surface	Selling points	Supply ability	Certificate
SAE1045	4.8/8.8	black oxide	realiable quality	1000 tons/month	ISO9001:2000
SAE5140	10.9	phosphating	good service
SCM432	12.9	galvanization	reasonable price	delivery time	Packing
42CrMo	12.9	dacroment	timely delivery	35-40 days/container	5pcs/box;6boxes/carton

What we can garantee:

(1) Produce as per your request

(2) Strict quality control

(3) very reasonable and competitive price.

high strength hex head bolt