Page 641 - Yamawa_European_Catalogue_YEU23

9. Comparison of pitch diameter tolerance

Intro

For Cutting Tap Unified Coarse Thread (UNC)
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

P3 P5
P4 SL
3B 2BX 3B 197
1 3/8-6 UNC
2B 2B 263
GH4 GH6 GH8 1B 392
GH9
PO
P3 P6
P4
3B 2BX 3B 199
1 1/2-6 UNC
2B 2B 265 ST
GH4 GH6 GH8 1B 400
GH9

ROLL

3B 2BX
CARBIDE
2B
Internal threads 3B Internal threads 2B
Internal threads 1B
LONG

HAND
TAPS

EG (STI)

SPECIAL
THREADS,
GAUGES

THREAD
MILLS

DIES

CENTER
DRILLS

Technical
info

639