Overall Thread Thread+Neck Shank Shank Size of Length of
length length length length dia. square square

L ℓ ℓn ℓs Ds K ℓk


(for blind hole)
Spiral Fluted Taps Spiral Fluted Taps Spiral Pointed Taps
OL+RZ
Thread Forming Taps for Dry Tapping, Coated
Specification


(for through hole)
■OL+RZ is the forming taps enabling dry tapping under
following condition : tapping sizes of smaller than M6, thin
Coating steel sheets having burring operation, and steel parts with
rather short length. Optimum coating suitable to the tapping
condition.
Recommended Tapping Speeds depending on Materials


(for through hole)
Free cutting and Carbon steel and Medium alloy steel and Ferritic and austenitic
High alloy steel
structural steel
IS P
low alloy steel
IS P
heat treated steel
IS P IS P
stainless steel
IS M M TYPE:1 DIN371
15 30 15 30 15 25 15 25 10 25
〜 〜 〜 〜 〜
(m/min) (m/min) (m/min) (m/min) (m/min)
For icon explanation, refer to P.50


Hand Taps
Carbide Taps
Cemented
Segment:1J
Size Class Code Chamfer L ℓ ℓn ℓs Ds K ℓk Lobe Type Stock
(mm) (mm) (mm) (mm) (mm) (mm) (mm)
For Metric Threads
M3 × 0.5 ISO2X RE3.0GBHPTP 4P 56 9 18 34 3.5 2.7 6 4 1
M4 × 0.7


Roll Taps
ISO2X RE4.0IBHPTP 4P 63 13 21 38 4.5 3.4 6 4 1
M5 × 0.8 ISO2X RE5.0KBHPTP 4P 70 14 25 39 6 4.9 8 4 1
M6 × 1 ISO2X RE6.0MBHPTP 4P 80 15 30 45 6 4.9 8 4 1
Number of oil grooves : non


Simple Inspection Tools
Special Thread Taps
Pipe Taps
Thread Mills
Dies
Center Drills
Centering Tools


DIN
RO-6
171