Page 65 - HOLE MAKING CATALOG p311-382
P. 65
USER GUIDE TAPS
Tap Nomenclature (Regrinding)
A J1 '
E
d3 A-A
' di dm d1 γ
S
P
AD
B
Δ1
T
ε
B d5
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
ϒ1 Rake angle
T Width of land
S Flute width
d5 Web thickness
ε Angle of spiral flute
375
