(1)special bolt (2)according to customers' drawings (3)4.6 4.8 8.8 (4)Q235.35&45 steel (5)plain,black,zinc,hdg Name:special bolt:Model:ss5, ss8, ss25, ss36Size:D3/4*4-7/8, 7/8*5-3/4, 15/16*6, M22*170, M24*161Material: Q 235, 35&45 steel or specified Grade: 4.6, 4.8, 8.8Surface: plain, zinc, black, hdgPack:Double-layer woven bag+Free fumigation wooden palletUsed on wooden sleepers ,we can produce ...