Page 735 - Iscar
P. 735
USER GUIDE
TAPS
Tap Nomenclature (Regrinding)
A A γ 1
β
Δ
d3 di dm d1
Δ
A-A
P
α
A
B γ
S
Δ 1
T
ε
d5
B-B
B
d1 Major diameter
dm Flank diameter
di Minor diameter
d3 Chamfer diameter
P Pitch
a Flank angle
ß Chamfer angle
j Gun nose angle
ϒ Gun nose front
rake angle
Δ Chamfer relief
Δ 1 Pitch diameter relief
on the land
ϒ 1 Rake angle
T Width of land
S Flute width
d5 Web thickness
ε Angle of spiral flute
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