(1)Hex/ Flandge/Wheel
(2)Material:carbon steel, stainless steel
(3)Size:M4-M64, all length
(4)Finish: Zinc plated..

 Standard: DIN, ISO, ANSI, etc

(1)Hex/ Flandge/Wheel
(2)Material:carbon steel, stainless steel
(3)Size:M4-M30, all length
(4)Finish: Plain, Zinc plated, etc