This is a listing of 524 'standard' threads including: BA = British association. CEI = Cycle Engineers Institute. ADM = Admiralty. M = ISO Metric. Whit = Whitworth. UNF/UNC = Unified national Fine/Coarse. BSF = British Standard Fine. W.INS = Whitworth Instrument. W.Pipe = Whitworth Pipe Thread Brass = Brass thread. PROG = Progress Thread. BSP = British Standard Pipe Thread. WALTH = Waltham Thread PEND = Watch Pendant Thread. GAS = Gas (Brass Pipe) Thread THURY = Swiss Screw Thread. ASME = ASME Thread. HOLTZ= Holtzapfels Threads. LOEW = Loewenhertz Threads. SPARK = Spark Plug Threads. Elgin = Elgin watch screw threads (L = left hand thread) CROWN = Watch crown threads. BUTTON = Watch button threads COND = Steel conduit thread (DIN 40430) Original compilation by Andy Pugh of Bodgesoc Industries, Sheffield, UK Additions and layout by Ian W. Wright, Sheffield, UK The actual table can be easily converted to Excel to allow formating: -Select all data -'Copy' -Open Excel -paste - you might have to do 'text to columns' if it doesn't drop in nicely. We have this listing formated nicely, printed out using a large format printer as ONE page, lamiated for durability, and hangs in an out of the way spot in the student machine shop. When someone comes in with a strange (or not so strange) thread and asks 'what's this?', we just point at the chart. A quick note when attempting to identify an unknown thread: the MEASURED thread diameter will usually be a few thousandths less than the theroretical dimension shown in the chart. Machinery Handbook gives the allowable clipping of the crest for UNF/UNC threads, each of the other systems will have their own standards.