Product Introduce:Thread rod  
Type of gear:standards gear,ladder-shaped gear,round gear rack

Class:Grade 4.8,Grade 5.8,Grade 8.8,Grade 9.8,Grade 10.9,Grade 12.9,B7.A2(304),A4(316)

Specification:DIN series m4-m52

              B.S series 3/16"-2"

              U.S series 1/4"-3/4"

Surface treatment:bear outlook,

                 galvanized,

                 heat  galvanized,

                 blackened