Page 643 - Yamawa_European_Catalogue_YEU23

9. Comparison of pitch diameter tolerance

Intro

For Cutting Tap Unified Fine Thread (UNF)
Basic Pitch (+) μm SP
Dia.
0 20 40 60 80 100 120 140 160 180 200 220 240 260 280 300 320 340 360 380 400 420

P1 P2 P3
3B 2BX 3B 90 SL
5/16-24 UNF
2B 2B 121
GH2 GH3 GH4 GH5 1B 179
P1 P2 P3
PO
3B 2BX 3B 93
3/8-24 UNF
2B 2B 124
GH2 GH3 GH4 GH5 1B 187
P1 P2 P3 P4 ST
3B 2BX 3B 104
7/6-20 UNF
2B 2B 137
GH2 GH3 GH4 GH5 GH6 1B 205
ROLL
P1 P2 P3 P4
3B 2BX 3B 106
1/2-20 UNF
2B 2B 141
GH2 GH3 GH4 GH5 GH6 1B 212
CARBIDE
P1 P2 P3 P4
3B 2BX 3B 111
9/16-18 UNF
2B 2B 149
LONG
GH2 GH3 GH4 GH5 GH6 1B 225
P1 P2 P3 P4
3B 2BX 3B 113
5/8-18 UNF
2B 2B 151 HAND
GH2 GH3 GH4 GH5 GH6 1B 230 TAPS

P2 P3 P4
3B 2BX 3B 124
3/4-16 UNF
2B 2B 164 EG (STI)
GH3 GH4 GH5 GH6 1B 248

P2 P3 P4
SPECIAL
3B 2BX 3B 134
7/8-14 UNF THREADS,
2B 2B 177
GAUGES
GH3 GH4 GH5 GH6 GH7 1B 268
P2 P3 P4
THREAD
3B 2BX 3B 144
1-12 UNF MILLS
2B 2B 192
GH3 GH4 GH5 GH6 GH7 1B 289
P2 P3 P4
DIES
3B 2BX 3B 149
1 1/8-12 UNF
2B 2B 197
GH3 GH5 GH7 1B 297
CENTER
DRILLS
P2 P3 P4
3B 2BX 3B 152
1 1/4-12 UNF
2B 2B 203
GH3 GH5 GH7 1B 304
Technical
info

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