A Brand AT-2 R-Spec (16642)

Advanced Performance End-Cutting Thread Mill for Non-ferrous Materials


The high-efficiency thread mill AT-2 R-SPEC is engineered to dramatically reduce machining time in non-ferrous metal applications such as aluminum alloy by its continuous helical cutting ability, which combines drilling and threading into a single process.



prevents welding on the cutting edge

End Cutting Edge

Helical drilling and threading can be done simultaneously

Unique Cutting Edge Shape

prevents deflection of tool


for wide chip room

Left-Hand Cut

Results in long tool life by climb milling



List 16642 - A Brand AT-2 R-Spec - Metric View Offering >   View Overview >

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

good best

Speed & Feed Calculator

View Speed & Feed calculator