CUTTING TOOLS 11-80 Hardflex® Hacksaw Blades • Made in USA CAUTION: Any cutting tool may break or shatter under improper use. Government regulations require use of safety glasses and other appropriate safety equipment at all times in the vicinity of use. Shatterproof Variable Spacing Between Teeth Variable Gullet Depth Length (Inches) Teeth Per Inch Material Thickness Application Item No. Pkg. Qty. 12 14-18 1/4" and Thicker Aluminum, Babbitt, Brass, Bronze, Non-Ferrous Metals, Cast Iron, Lead, Plastic, Hard Rubber, High-Speed Steel, Tool Steel, Threaded Rod 51224 5 51224M01 10 NS169872 30 12 20-24 1/16" to 1/4" General-Purpose Cutting, BX Cable, Angle Iron, Bolts, Channels, Conduit, Drill Rod, Pipe and Tubing, Medium Gauge Sheet Metal and Metal NS136822 5 51225M01 10 51225M02 30 12 26-32 1/16" and Thinner Light BX Cable, Wire Rope, Gutters, Light Gauge Sheet Metal and Thin-Walled Tubing 51226 5 NS169873 10 NS169874 30 Variable Pitch • Teeth vary in size, spacing, gullet depth and number of teeth per inch along the whole length of the blade • Allows each tooth to enter the workpiece at a different cutting angle than the tooth before it, cutting into the workpiece underneath the cut made by the previous tooth, which makes for better chip formation. This allows you to cut faster and results in a smooth-cut finish • Less friction results in less heat buildup, particularly when cutting materials such as stainless steel that tend to work-harden easily • Each variable pitch blade size is able to cut a wider range of thicknesses, materials and shapes than straight pitch blades – reducing time required for blade changes Flexible Alloy Spring Steel Back Matrix Cutting Edge Electron Beam Weld Bi-Metal Construction • A matrix alloy tool steel cutting edge is electronically welded to an alloy spring steel back • Cuts tough materials up to Rc 45, yet remains shatterproof • Can be tensioned to 30,000 PSI in a Hardflex® frame for greater performance • Withstands heavy feed pressures, side pressures and shocks without stripping teeth • Resists fatigue due to high friction cutting temperatures • Teeth stay sharper longer Wavy Set • Groups of teeth are offset to the left and right throughout the blade • Less likely to strip than raker set teeth, because the set extends from below the gullets • On thin wall material, waviness increases the contact area, giving better accuracy • Better choice when the workpiece thickness varies, or for thin materials which may catch or bind teeth • The angle of each tooth changes gradually, thereby increasing the contact area and distributing the load HACKSAW BLADES WARNING: Cancer – www.P65Warnings.ca.gov.