ANSI B18.2.1 HEX BOLT, UNF THREAD, REAL GR.5, HEAT TREATED,BLACK OXIDE ,MARK " THREE LINE", MATERIAL : 35K 5/16*1   FULL THREAD        5/16*1  HALF THREAD  THREAD LENGTH=17MM    5/16*1.1/4  HALF THREAD THREAD LENGTH=20MM    5/16*1.1/4  FULL THREAD 3/8X3/4 3/8X1" 3/8*1.1/4 THREAD LENGTH=20MM 3/8X1.1/2  THREAD LENGTH=20MM 3/8X2          HALF THREAD    7/16X1.1/4 FULL 7/16X1.1/2 THREAD LENGTH=25MM 7/16X2 HALF 1/2X1.1/2 FULL THREAD 1/2X2          HALF THREAD    1/2X2.1/2   HALF THREAD    ANSI B18.2.1 HEX BOLT, UNC THREAD, REAL GR.5, HEAT TREATED,BLACK OXIDE,MARK " THREE LINE", MATERIAL : 35K 3/8*3/4 5/8X2   5/8X2.1/2 HALF THREAD     5/8X3" HALF THREAD     3/4X2 FULL THREAD   3/4X2.1/2 HALF THREAD THREAD LENGTH=40MM 3/4X3 HALF THREAD