Machinery’s Handbook, 31st Edition
2966
Index
T aps and tapping
( continued )
T aps
( continued )
thread forms 969 thread limits 974 thread tolerances 974 tolerances straight pipe 994 taper pipe 994 types of 969 undersize 972 UNS thread 971 T aps and tapping 2148–2178 automatic screw machine 1235 clearance holes
tapping specific materials 2150 alloy steel 2151 aluminum 2152
carbon steel 2150 copper alloys 2153 free cutting steel 2152 gray cast iron 2152
high-temperature alloys 2152 high-tensile strength steels 2151 malleable cast iron 2152 nodular cast iron 2152 stainless steel 2151 titanium and titanium alloys 2152 Acme 1009, 1010 drill hole size 1009, 1010, 1012 adjustable 1009, 1010 markings standard 973 square thread 1010 thread series designations 973
ISO metric bolts and screws 2173 CNC machine 2177 cold form tapping 2174–2176 coolant 2178 cutting oils 1250 cutting speeds 1129–1142, 2150, 1235 hole size before tapping 2170 Unified miniature thread 2160–2171 length of engagement and tolerances 2169 lubrication 1250 methods of tapping 2148 nitriding of 2149 numerically controlled 2177 pipe power for driving 2177 tap drills for 2176 pipe threads drill sizes 2176 power required 2177 pitch increased to compensate for shrinkage 2198 rake angles for various materials 2150 removing a broken tap 2176 serial taps and close tolerances 2149 speeds 2149, 2150 spiral fluted 2149 pointed 2148 square threads 1010, 1012 steel 2149 surface treatment of 2149 tap drills Acme threads 1009 American National threads 2168 machine screws 2169
taps
tolerances on minor diameter 2169 Unified thread form 1940 T aylor tool life equation 1091, 1167, 1168, 1170, 1198, 1199, 1200, 1213, 1220 T -bolts and T-slots, ANSI/ASME Standard 1858–1859 T DH (total dynamic or system head) 2803 T eflon (TFE) bearings 2440 T emperature absolute 2870 boiling points, various substances 369 critical, heat treating of steel 459, 462, 466 effect on working stresses, of springs 314, 315–316 effects on drawing dimensions 625 effects on oil 2505, 2509 Fahrenheit and Celsius 2870 of freezing mixtures 373 ignition 373 of various materials 373 influence on strength of metals 392 judging by color, steel 477 of lead bath alloys 478 of nitrogen, solid 646 required to develop tightening stress in bolt 1658, 1660 T emper designations, aluminum alloys 528– 539 T empering 404–405, 423–426, 458, 460, 461, 464, 465, 468, 476–479, 501–502 of carbon dioxide, solid 646 changes in length due to 375
diameter of tap drill 2153 ISO metric threads 2172 coarse pitch 2172 cold form 2176 pipe Briggs (NPT) 2176 Whitworth 2176 Unified thread system
double 461, 479 in lead bath 478 in oil 478
cold form 2175 miniature 2171
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