Machinery’s Handbook, 31st Edition
2968
Index
T hreads and threading
T hreads and threading
( continued )
( continued )
Unified thread system
deviation formulas 2048 diameter pitch combinations 1950, 2035, 2053 diameters of wires for measuring 2124 dies, maximum pitches 2199 dimensional effect of coating 2022 drunken thread 2120 dryseal pipe 2095 Echols thread 2120 electrical fixture threads 2113 electric socket and lamp base 2113 external thread tolerances 2027 formulas for three-wire measurement 2123, 2124 French thread 2120
dimensions 1951–1977 external and internal thread forms 1940, 1994 fine and extra fine series 1950–1983 hole sizes for tapping 1991 internal and external profile 1948 limits 1951–1977, 1988 miniature, design dimensions 1994 miniature screw thread 1992–1996 pitch diameter tolerances 1990 standard series, tables of 1951–1977 thread classes 1979–1983 thread form, data and formulas 1940, 1947, 1948–1950, 1949 thread series 1948 uniform 4-, 6-, 8-, 12-, 16-, 20-, 28-, and 32-pitch series 1950–1987
fundamental deviation 2019 gages for screw threads 2140 classification 2140 standard tolerances 2146
Briggs pipe thread 2120 British Standard
for unified screw threads 2140
buttress threads 2078 ISO metric 2035, 2053 ISO profile 2044 pipe 2098–2100 RMS thread 2115 UNJ profile 1997 Whitworth 2086–2088
grinding 2192–2195
centerless method 2196
Harvey grip thread 2121 helix angle 1944, 1978–1987 hole size for tapping 1991 hose coupling 2105 indexable threading insert, CNC 1374 instrument makers’ 2113 interference fit 1944, 2106–2111 internal threads in pipe couplings 2093 International Metric thread system 1941 ISO metric 1942, 2035, 2053 designation 2047, 2048 design profile 2047 lead angle 2200 length of thread engagement 1944, 2047, 2049–2052 limiting dimensions formula 2022 limits fundamental deviation formulas 2048 lengths of thread engagements 2047 Class 1A and 1B 1952–1977 Class 2A and 2B 1951–1977 Class 3A and 3B 1951–1977 limits and tolerance 2049–2052 Lloyd & Lloyd screw thread 2121 lock nut pipe thread 2121 Löwenherz 2118 maximum material condition 1944 measuring screw threads 2122–2147 three-wire method 2123–2140 contact pressure 2126
casing thread 2120 change gears for lathe 2181
for fractional output 2182 modifying the quick change gearbox output 2182 changing pitch slightly 2199 chasing, cutting speeds for 1129–1142 checking by three-wire method, tables 2130, 2135 classes of tolerance 1979–2062, 2079 CNC 1374–1377 cutting calculations 1374–1375
lathes, cutting threads 1374 long-hand threading 1376 multi-start threads 1377 threading commands 1376 threading cycle 1376–1377 threading operations 1376 thread milling 1363
Cordeaux thread 2120 crest diameter tolerance 2049 cutting 2179 square 1010 cutting, change gears 2181 fractional ratios 2182
Dardelet thread 2120 definitions 1942–1946 design and application data 2107 designation of Unified threads 1951–1991 designation symbols for 973 design dimensions and tolerances 1994
formulas 2127, 2128, 2130, 2132, 2138, 2139 formulas, accuracy 2133 Whitworth, best wire sizes 2125, 2126 Whitworth, formulas 2117
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