DIN 912 Socket head cap screws 3/8X5/8 DİN 912 UNC 12,9 BLACK 5000 PCS 3/8X1"1/2 DİN 912 UNC 12,9 BLACK 5000 PCS 5/16X1"1/4 DİN 912 UNC 12,9 BLACK 5000 PCS 1/2 UNC 13 LARGE HEAD: 1/2X1"1/2 DİN 912 UNC 12,9 BLACK 5000 PCS 1/2X1"3/4 DİN 912 UNC 12,9 BLACK 5000 PCS 1/2X2" DİN 912 UNC 12,9 BLACK 5000 PCS 1/2X2"1/2 DİN 912 UNC 12,9 BLACK 3000 PCS 1/2X3" DİN 912 UNC 12,9 BLACK 3000 PCS