I) Bolt and Machine Screw Material: Stainless steel, Steel Type: Hex Bolts, Round Head Square Neck Carriage Bolts, Hex Socket Cap Screws, Hex Socket Set Screws, Botton Head Bolt Screws, Tapping Screws, Wood Screws, Lifting Eye Bolts, Eye Bolt Form B, Masonary Bolts, U-Bolts. Parts upon Customer's request and their drawing or sample. 2) Nuts Material: Stainless steel, Steel Type: Hexagon Nuts, Nyloc Nuts, all metal insert locking Nuts, Domed Cap Nuts, Acorn Cap Nuts, Flange Nuts, Square Nuts, Weld Nuts, Round Nuts, Lifting Eye Nuts, Slotted and Castle Nuts, Chain roller, Other special Nuts or machine Parts upon Customer's request and their drawing or sample. 3) Thread Material: Stainless steel, Steel Type: Parts upon Customer's request and drawing or sample; DIN931, DIN933, DIN603, DIN912, DIN913, DIN916, DIN84, DIN85, DIN7985, DIN965, DIN966, DIN7981, DIN7982, DIN571, DIN580, DIN444, DIN529, DIN3570, DIN975, DIN976. Thanks & Best Regards; Peter Hong / Foreign Dep. for Honest Prosper Industrial Co., Ltd. Tel:886-4-7983078 Fax:886-4-7995061 Skype:Honest Prosper