MATERIALS USED FOR TOOLS PRODUCING Symbol Description Marking acc to DIN Destination HSS High-speed steel 1 3343 S-6-5-2 General purpose machine dies,

MATERIALS USED FOR TOOLS PRODUCING Symbol Description Marking acc.to DIN Destination HSS High-speed steel 1.3343 S-6-5-2 General purpose machine dies, hand taps and general purpose machine taps HSSE (HSCo5) High-speed steel 1.3243 S-6-5-2-5 High performance machine taps, machine dies, INOX drills HSSE-PM High-speed powder steel High performance machine taps for difficult workable materials, forming taps VHM Micrograin solid carbide High performance machine taps for difficult workable materials, drills, mills 2. THREAD TYPE M r- i /г. Metric thread ISO DIN-13 MF /г. Metric fine thread ISO DIN-13 (symbol used only in catalogues for distinguish from metric coarse thread) UNC У. jr. American unified coarse thread ANSI B-1.1 UNF yr. American unified fine thread ANSI B-1.1 G f. лГ-.ч .F. ,л- ,л- л /у// Whitworth pipe thread DIN-ISO 228 (identical with BSP) Rp у .р. Р:;ЭД Whitworth internal cylindrical pipe thread PN-ISO 7/1 and DIN EN 10226-1 (identical with BSPP) Rc Whitworth internal tapered pipe thread PN-ISO 7/1, DIN EN 10226-2 (identical with BSPT) BSW Whitworth thread BS-84:1956 (in the past - W) BSF /Ак Whitworth fine thread BS-84:2007 Pg ;j Steel conduit thread DIN-40430 (P) Tr Й У-Жг. Trapezoidal symetric thread DIN-103 NPT Шг) American tapered pipe thread with dryseal material ANSI B-1.20.1 R F Whiworth external tapered pipe thread ISO-7/1 (identical with BSPT) W W Cylindrical Whitworth thread for gas cylinder valves PN-60/M-69224 and DIN 477