Four-Wing Z4 Geometry
The verified C173 design uses four cutting wings in a dedicated T-slot cutter format for compatible routing operations.


A Klein C173 four-wing HW carbide T-slot cutter with a 41 mm cutter diameter, 2 mm cutting width, 8 mm shank, and 43 mm overall length. The exact C173.020.R Item is listed for compatible hand router machines and router tables working softwood, hardwood, aluminium, plastic, plexiglass, and PVC.
The C173 family uses a four-wing T-slot cutter format for compatible routing in plastic materials, aluminium, softwood, and hardwood. This exact Item combines the 41 mm diameter body with a 2 mm cutting width.
For compatible hand router machines and router tables using an 8 mm collet. Confirm collet condition, cutter clearance, machine guarding, workholding, intended slot dimensions, and the applicable machine and tool speed limits before production use.
Klein C173.020.R is the exact 2 mm cutting-width variant in the C173 family of HW Z4 T-slot cutters. The official Item row specifies an 8 mm shank, 41 mm cutter diameter, 2 mm cutting width, and 43 mm overall length.
The four-wing cutter geometry is intended to produce a narrow T-slot profile in compatible material when used in a properly matched hand router or router table. The official family page identifies plastic material and aluminium as primary uses and also lists softwood, hardwood, plexiglass, and PVC among supported workpiece groups.
Correct 8 mm collet fit, cutter clearance, machine guarding, workholding, entry strategy, feed direction, and compliance with the machine and tool speed ratings are essential. Verify that the 41 mm cutter body and 2 mm cutting width suit the intended T-slot geometry before machining.
Technical Specifications
The verified C173 design uses four cutting wings in a dedicated T-slot cutter format for compatible routing operations.
The C173.020.R Item pairs a 41 mm cutter diameter with a narrow 2 mm cutting width and 43 mm overall length.
Official machinery guidance lists both hand router machines and router tables when equipped with a compatible 8 mm collet and adequate clearance.
Confirm the exact C173.020.R Item code rather than selecting by the C173 family alone. Use a clean, compatible 8 mm collet and verify that the router, table opening, guard, fence, and workholding provide safe clearance for the 41 mm cutter body. Confirm the required 2 mm slot width, tool projection, feed direction, material support, and the applicable machine and tool speed limits before use.
Klein C173.020.R combines a 41 mm cutter diameter, 2 mm cutting width, 8 mm shank, 43 mm overall length, and four-wing HW carbide geometry for compatible T-slot routing.
Correct collet fit, machine clearance, guarding, workholding, feed direction, slot geometry, and adherence to the machine and tool speed ratings are essential to safe, consistent production use.