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SP-BLF OX

Spiral Fluted Taps, Deep Hole Use, Oxided

Specification

The BLF is suitable for deep hole tapping and presents the

Efollowing advantages thanks to its geometry with the truncated crests:
1. Elimination of chipping problems at the taps full thread portion.
Oxide 2. Good chip ejection.
M26～3. Reduction of tapping friction.
Recommended Tapping Speeds depending on Materials4. The internal threads are cut by the chamfer and the 1st full thread.
The full thread portion follows the internal threads just cut, and
Free cutting andCarbon steel anddrives or rotates the tap forward based on the pitch of the threads.
structural steellow alloy steelSince only half of threads are truncated, the BLF tap does not
IS PIS Plose its guiding function, making sure that the tap is able to move
5〜105〜10forward following the pitch of the threads.
(m/min)(m/min)
For icon explanation, refer to P.50
TYPE：1DIN371TYPE：2DIN371

TYPE：3 DIN376 TYPE：4 DIN376

Segment：1D

SizeClassCodeChamferL (mm)ℓ (mm)ℓn (mm)ℓs (mm)Ds (mm)K (mm)ℓk (mm)No. of flutesTypeStock
For Metric Threads
M3×0.5ISO2SD3.0GANEXJ2.5P56918343.52.7631●
M4×0.7ISO2SD4.0IANEXJ2.5P631321384.53.4631●
M5×0.8ISO2SD5.0KANEXJ2.5P7014253964.9831●
M6×1ISO2SD6.0MANEXJ2.5P8015304564.9831●
M8×1.25ISO2SD8.0NANEXJ2.5P9019354786.2932●
M10×1.5ISO2SD010OANEXJ2.5P1002339521081132●
M12×1.75ISO2SG012PANEXJ2.5P11026-56971033●
M14×2ISO2SG014QANEXJ2.5P11026-561191233●
M16×2ISO2SG016QANEXJ2.5P11026-561291233●
M18×2.5ISO2SG018RANEXJ2.5P12533-6414111443●
M20×2.5ISO2SG020RANEXJ2.5P14033-7116121543●
M22×2.5ISO2SG022RANEXJ2.5P14033-711814.51743●
M24×3ISO2SG024SANEXJ2.5P16037-821814.51744●
M27×3ISO2SG027SANEXJ2.5P16037-8220161944●
M30×3.5ISO2SG030TANEXJ2.5P18044-9222182144●
M33×3.5ISO2SG033TANEXJ2.5P18046-9225202344●
M36×4ISO2SG036UANEXJ2.5P20052-10228222544●
M39×4ISO2SG039UANEXJ2.5P20052-10232242744