CMT Stop Collar for 1/2" Shanks
Series 541
1/2-Inch Stop Collar
CMT 541.002.00 is the exact 1/2-inch-bore variant in the official Series 541 stop-collar family. This non-cutting service accessory fits compatible 1/2-inch (12.7 mm) shanks and is referenced on selected CMT router-bit assemblies where a movable collar is used to position or retain related components. Official product imagery shows a compact annular collar with a radial set-screw clamping interface.
Main Product Description
CMT 541.002.00 is the exact 1/2-inch-bore item in the official Series 541 stop-collar family. CMT lists the family under Spare Parts and Accessories, and the live North American variation row identifies Item Code 541.002.00 with bore value B = 1/2 inch.
The official European variation table lists the same item at 12.7 mm, confirming the imperial-to-metric shank fit. Official product imagery shows an annular collar with a radial threaded clamping interface, allowing the collar to be positioned on a compatible cylindrical shank and secured for the specified tool assembly.
CMT references 541.002.00 on selected compatible 1/2-inch-shank router-bit assemblies, including the 815.690.11B 90° V-grooving bit. Distributor documentation also identifies the component as a steel stop collar for top-bearing bits. Compatibility must still be confirmed by the exact tool row; this is a separately orderable accessory, not a cutting tool.
Best Fit Applications
Product Highlights
Exact 1/2-Inch Variant
Item Code 541.002.00 is the official Series 541 stop collar with B = 1/2 inch, also listed as 12.7 mm in CMT’s metric table.
Dedicated Service Accessory
This is non-cutting hardware for compatible CMT tool assemblies and is intentionally kept separate from carbide, PCD, HSS, and other cutting-material classifications.
Verified 1/2-Inch Tool Reference
CMT lists 541.002.00 with the 815.690.11B 90° V-grooving bit, confirming use on at least one official 1/2-inch-shank router-bit assembly.
Compatibility & Installation Notes
Confirm exact Item Code 541.002.00 and a true 1/2-inch (12.7 mm) cylindrical shank before installation. Use the collar only where the compatible CMT tool row or assembly specifies it. Position it squarely, secure the radial clamping interface, and verify that it does not contact the cutting edges, bearing, collet, machine guard, workpiece, or surrounding hardware. This accessory does not replace 541.001.00 for 1/4-inch shanks, 541.006.00 for 3/8-inch shanks, or 541.009.00 for 1/8-inch shanks.
Verified 1/2-Inch Positioning Hardware for Compatible CMT Assemblies
CMT 541.002.00 is the exact Series 541 stop collar for a 1/2-inch or 12.7 mm shank interface.
Its compact annular form and radial clamping interface provide a separately orderable positioning and retention component for compatible CMT router-bit assemblies.