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
N+RS/N-RS
Thread Forming Taps for Non-Ferrous Materials
Specification


(for through hole)
■N+RS/N-RS is the forming tap suitable for non-ferrous
materials such as aluminum castings, aluminum die
E castings and brass.
Nitride
~ M2.6
Recommended Tapping Speeds depending on Materials


(for through hole)
Aluminum alloy Aluminum alloy N+RS ~ M6
Si Si N-RS M8 ~
IS IS
5(m/min)

15 5 15

(m/min)
For icon explanation, refer to P.50


Hand Taps
TYPE:1 DIN371 TYPE:2 DIN371


Carbide Taps
Cemented
TYPE:3 DIN371 TYPE:4 DIN376


Roll Taps
Simple Inspection Tools
Special Thread Taps
Segment:1J
Size Class Code Chamfer L ℓ ℓn ℓs Ds K ℓk Lobe Type Stock


Pipe Taps
(mm) (mm) (mm) (mm) (mm) (mm) (mm)
For Metric Threads
M2 × 0.4 ISO2X RE2.0EBKENB 2P 45 8 - 32 2.8 2.1 5 4 1 ●
M2.3 × 0.4 ISO2X RE2.3EBKENB 2P 45 9 - 32 2.8 2.1 5 4 1
M2.5 × 0.45 ISO2X RE2.5FBKENB 2P 50 8 15 33 2.8 2.1 5 4 2 ●
M3 × 0.5 ISO2X RE3.0GBKENB 2P 56 9 18 34 3.5 2.7 6 4 2 ● Thread Mills
M4 × 0.7 ISO2X RE4.0IBKENB 2P 63 13 21 38 4.5 3.4 6 4 2 ●
M5 × 0.8 ISO2X RE5.0KBKENB 2P 70 14 25 39 6 4.9 8 4 2 ●
M6 × 1 ISO2X RE6.0MBKENB 2P 80 15 30 45 6 4.9 8 4 2 ●
Dies


M8 × 1.25 ISO2X RD8.0NBKENB 2P 90 19 35 47 8 6.2 9 6 3 ●
M10 × 1.5 ISO2X RD010OBKENB 2P 100 23 39 52 10 8 11 6 3 ●
M12 × 1.75 ISO2X RG012PBKENB 2P 110 26 - 56 9 7 10 6 4
Number of oil grooves : M2.5 and smaller = non, M3 and larger = 1
Taps for M6 and smaller : External centers on thread end are removed.
Center Drills
Centering Tools


DIN
RO-4
169