CMT Contractor ITK Plus Fast Framing Saw Blade - 160mm x 20mm, 24-Tooth ATB+Shear is a professional-grade circular saw blade engineered for metric-arbor cordless saws and track saws. Built with a 24-tooth alternate top bevel plus shear geometry, this blade delivers fast, aggressive cuts through framing lumber, plywood, OSB, and pressure-treated wood. The 160mm diameter and 20mm bore - with an included 16mm adapter - make it a direct fit for compact cordless circular saws and guided track saw systems that accept metric arbors.

Key Features

• 24-Tooth ATB+Shear Geometry (10 ATB + 8 Shear) - combines an alternate top bevel grind with an 8 deg. shear angle to produce fast stock removal while leaving cleaner edges than a standard flat-top configuration, reducing tear-out on plywood and sheet goods.
• 18 deg. Cutting (Hook) Angle - an aggressive positive hook pulls material into the cut, reducing feed resistance and allowing faster throughput on framing lumber and structural panels.
• 160mm Diameter with 20mm Bore (+16mm Adapter) - sized for compact and cordless metric-arbor saws, with a 16mm reducer ring so one blade fits multiple tool platforms without purchasing separate blades.
• 0.071 in. Kerf / 0.047 in. Plate - a thin kerf design reduces the material removed per pass, which lowers motor load on cordless tools and extends battery run time on job sites.
• Hard Metal (HW) Carbide Teeth - tungsten carbide tipping provides extended edge retention across demanding materials including pressure-treated lumber, OSB, and hardwood, reducing the frequency of blade changes.
• Pin Hole Configuration 2/6/32 - enables compatibility with saw platforms that use locating pin holes for repeatable, vibration-free blade seating.

Why This Product

• The 24-tooth ATB+Shear grind is specifically optimized for fast framing work - it cuts aggressively enough for structural lumber and OSB while maintaining edge quality on plywood and laminated sheet goods, removing the need to swap blades between tasks.
• The thin 0.071 in. kerf combined with the 18 deg. positive hook angle reduces the demand on cordless motors, making this blade a practical choice for battery-powered circular saws where preserving charge matters on long framing days.
• The dual-bore design - 20mm primary bore with a 16mm adapter included - means this blade spans multiple metric-arbor tool platforms, offering versatility for contractors who run track saws and cordless circular saws from different manufacturers.
• Hard metal carbide teeth resist dulling through repeated cuts in pressure-treated lumber and engineered panels, supporting sustained cutting performance across full framing projects without frequent tool changes.

Specifications

• Manufacturer Part Number: 271.160.24H
• Brand: CMT Orange Tools
• Diameter: 160mm
• Bore Diameter: 20mm (+16mm)
• Number of Teeth: 24
• Tooth Grind: ATB+Shear
• Sharpening: 10 ATB + 8 Shear
• Cutting Angle: 18 deg.
• Kerf Thickness: 0.071 in.
• Plate Thickness: 0.047 in.
• Pin Hole: 2/6/32
• Tooth Material: HW (Hard Metal Carbide)

Approved Applications

• Fast framing cuts in dimensional lumber
• Ripping and crosscutting softwood and hardwood
• Cutting plywood and OSB panels
• Cuts in pressure-treated lumber
• Track saw guided cuts
• Cordless circular saw cutting operations

Frequently Asked Questions

What does the ATB+Shear tooth grind mean for cut quality?

ATB+Shear combines an alternate top bevel angle with an additional 8 deg. shear component on each tooth. This geometry allows the teeth to slice across wood fibers rather than chop through them, which produces faster cuts with reduced splintering compared to a basic flat-top grind. This blade uses 10 ATB teeth and 8 Shear teeth in its 24-tooth configuration.

What saws is this 160mm blade compatible with?

This blade is designed for metric-arbor cordless circular saws and track saws that accept a 160mm diameter blade. It fits machines with a 20mm arbor directly, and the included 16mm reducer adapter extends compatibility to saws with a 16mm arbor bore. The pin hole configuration is 2/6/32 for platforms that use locating pins.

Why does kerf thickness matter for cordless tool performance?

A thinner kerf - this blade is 0.071 in. - means less material is removed per pass, which directly lowers the cutting resistance the motor must overcome. On battery-powered saws, lower motor load translates to longer run time per charge and reduced heat buildup during sustained framing operations.

Is this blade suitable for cutting pressure-treated lumber?

Yes. The hard metal (HW) carbide teeth are rated for use in pressure-treated lumber. Carbide tipping resists the accelerated dulling that can occur when cutting chemically treated wood, making this blade appropriate for both structural framing and exterior applications involving treated material.