Общий каталог FANAR 2021 - страница 303

γ2K d1 d2 i Technical information 6. DIES 6.1. Die construction elements w z γ1 n A s h1 d1 - nominal thread diameter d2 - outside diameter Detail A h1 - die thickness κ - chamfer angle γ1- rake angle γ2 - spiral face inclination w - chip hole n - chamfer s - spiral face z - hole for fixing screw 6.2. Dimension standards Dimension standards assign proper series of dies outer dimensions (diameters, thickness) to nominal standards as well as determine the dimensions connected with dies fixing in the holder (position, size of holes for fixing screws and V-grooves). Symbol Standards Destination EN 22 568 Round dies for metric coarse M and MF fine threads, UNC, UNF, DIN (in the past DIN 223) B S W, BSF as well as other threads, excluding thePN-92/M-58070pipe threads G and R ISO 2568 EN 24 231 DIN (in the past DIN 5158) Round dies for pipe threads GPN-92/M-58161 ISO 4231 EN 24 230 DIN (in the past DIN 5159) Round dies for tapered pipe threads RPN-92/M-58160 ISO 4230 12 300