our factory can bolt and nut
1.surface treatment: H.D.G ,plain,black,zinc
2.finish:4.8-8.8
3.standard:din, BS, ANSI/ASTM

material: carbon steel,35#,45#

(1):D5/8"*L2"

(2):D1"*L3-1/2"

(3)D1'*L4"

(4)D1-1/4"*L4-1/2"

(5)D1/2"*L1-1/2"

(6)D1/2"*L1-3/4"

standard:BS,ANSI/ASTM

                  DIN:

1.DIN 931-2
M42 to M160*6 hexagon head bolts - Product grade B

2.DIN EN 1662
Hexagon bolts with flange - Small series (ISO/DIS 15071:1996,modified)

3.DIN EN ISO 4014
Hexagon head bolts - Product grades A and B(ISO 4014:1999)

4.DIN EN ISO 4017
Hexagon head screws - Product grade A and B (ISO 4017:1999

5.DIN EN ISO 4018 
Hexagon head screws - Product grade C (ISO 4018:1999)

processes: cold forging and hot forged

way of payment: T/T, L/C