For Cutting Tap Unified Fine Thread (UNF)

SP

Basic Pitch (+) μm Dia.

0 20 40 60 80 100 120 140 160 180 200 220 240 260 280 300 320 340 360 380 400 420

P1

SL3B3B42
No.0-80 UNF
2B2B57
GH1 GH2
PO P1
2BX 3B
3B3B 47
No.1-72 UNF
2B
2B2B 63
GH1 GH2Internal threads 3BInternal threads 2B
STInternal threads 1B
P1
3B3B50
No.2-64 UNF
2B68 2B
GH1 GH2
ROLL
P1
3B3B 53
No.3-56 UNF
2B71 2B
GH1 GH2
CARBIDE
P1
3B58 3B
No.4-48 UNF
2B78 2B
LONGGH1 GH2
P1P2
3B60 3B
No.5-44 UNF
HAND,2B80 2B
TAPSGH2 GH3
P1P2 P3
3B63 2BX 3B
EG (STI)No.6-40 UNF
2B86 2B
GH2 GH3 GH4
SPECIALP1P2P3
THREADS,3B67 3B 2BX
No.8-36 UNF
GAUGES2B90 2B
GH2 GH3 GH4
THREADP1P2P3
MILLS3B73 3B 2BX
No.10-32 UNF
2B98 2B
GH2 GH3 GH4
DIESP1P2P3
3B77 3B 2BX
No.12-28 UNF
2B2B 105
GH2 GH3 GH4 GH5
CENTER
DRILLSP1P2P3
3B81 3B 2BX
1/4-28 UNF
2B 108 2B
TechnicalGH2 GH3 GH4 GH51B 164