EXOPRO® WHR-Ni Taps (338Ni)

Premium Taps designed for Nickel Based Alloys


The EXOPRO®-WHR-Ni spiral point tap series is one of OSG’s latest innovations for nickel-based alloy applications. The EXOPRO®-WHR-Ni series features a unique rake angle to improve cutting edge rigidity, which helps prevent chipping and prolongs tool life. With the addition of OSG’s patented HR coating, wear resistance and tool life can be substantially prolonged versus the competition.


Unique rake angle

Improves cutting edge rigidity to prevent edge chipping.

OSG’s patented HR coating

Improves wear resistance to prolong tool life.



List 337Ni - Spiral Pointed, Inch View Offering >   View Overview >

List 338Ni - Spiral Pointed, Metric View Offering >   View Overview >

Alternate Products

List 335Ni - Spiral Fluted, Inch View Offering >   View Overview >

List 336Ni - Spiral Fluted, Metric View Offering >   View Overview >



Nickel Alloys, Stainless Steel.


Both through hole and blind hole applications.


Popular in Aerospace & Medical Industries.

Application Guide

ISO Work Material Recommended
P Low Carbon Steel : 1010, 1018
P Medium Carbon Steel : 1035, 1045
P High Carbon Steel : 1065
P Alloy Steels : 4140, 4340
P Die Steels
M Stainless Steels : 300
M Stainless Steels : 400
M Stainless Steels : 17-4PH
K Cast Iron
N Aluminum : 6061, 7075
N Aluminum : Casting
S Nickel Alloy : Inconel
S Titanium : 6AL4V (30HRC)
H Hardened Steels : ~35 HRC
H Hardened Steels : 35-45 HRC
H Hardened Steels : 45-50 HRC
H Hardened Steels : 50-70 HRC

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