high tensile two head threaded stud bolts

1)  Material: High quality carbon steel
     Class :4.8, 5.8, 6.8, GR.2, A307
2)  Material :Alloy steel :20MnTiB ,40Cr ,42CrMo  
     Class :8.8, 10.9,12.9 ,GR.2,GR.5,GR.8,A325-1,A490-1 ,GR.B7,GR.B7M
3)  Material :stainless steel :302 ,304 ,305 ,316, 304L ,316L ,410, 430
     Class:  A2-50 ,A4-50 , A2-70 ,A4-70 ,GR.B8,GR.B8M
Surface Refine : Part galvanization ,Colorful galvanization ,Army green galvanization ,Black galvanization ,Steam Black ,Ash phosphorus ,Brass , Nickel plate ,Chrome plate ,Heating galvanization ,Zinc plated(yellow, black, green)
Packing:
1) Bulk packing: about 20-25kgs per carton. load cartons in pallets
2) Assortment in poly bag or plastic box.
3)As to customers' requirement