Page 639 - 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

P1
3B 3B 47 SL
No.1-64 UNC
2B 2B 65
GH1 GH2
P1
3B 2BX PO
3B 3B 53
No.2-56 UNC 2B
2B 2B 70
GH1 GH2 Internal threads 3B Internal threads 2B
Internal threads 1B
P1 ST
3B 3B 55
No.3-48 UNC
2B 2B 75
GH1 GH2
ROLL
P1 P2 P3
3B 2BX 3B 60
No.4-40 UNC
2B 2B 83
GH2 GH3 GH4
CARBIDE
P1 P2
3B 3B 63
No.5-40 UNC
2B 2B 83
LONG
GH2 GH3
P1 P2 P3
3B 2BX 3B 68
No.6-32 UNC
2B 2B 93 HAND
GH2 GH3 GH4 GH5 TAPS

P1 P2 P3
3B 2BX 3B 71
No.8-32 UNC
2B 2B 96 EG (STI)
GH2 GH3 GH4 GH5

P1 P2 P3
SPECIAL
3B 2BX 3B 80
No.10-24 UNC THREADS,
2B 2B 108
GAUGES
GH2 GH3 GH4 GH5
P1 P2 P3
THREAD
3B 2BX 3B 82
No.12-24 UNC MILLS
2B 2B 110
GH2 GH3 GH4 GH5
P1 P2 P3
DIES
3B 2BX 3B 90
1/4-20 UNC
2B 2B 123
GH2 GH3 GH5 1B 184
CENTER
DRILLS
P2 P3
3B 2BX 3B 98
5/16-18 UNC
2B 2B 134
GH2 GH3 GH5 1B 200
Technical
info

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