Table of Contents
Hacksaw Designation | How to Buy Hacksaw ?
Introduction:
Terminology used in Hacksaw blade:

Fig. Terms Relating to Hacksaw Blades
Centre Line-The longitudinal line which passes through the centres of the pin holes.
Pin Hole-The hole at each end of the blade by means of which the blade is held and tension when in use. The pin holes are normally located on the centre line of the blade.
Teeth-The serrations formed across the thickness of the blade to provide cutting edges.
Toothed Edge-The longitudinal edge along which the teeth have been formed.
Cutting Edge-The edge of the face intended to perform cutting. It is formed by the intersection of the flank and the face.
Face-The surface of the tooth over which the chip flows.
Flank-That surface over which the surfaces produced on the work piece pass. It extends to the root radius.
Root Radius-The radius connecting the face of the tooth and flank of the preceding tooth.
Gullet-The space bounded by the face, root radius and flank of a tooth, which permits chip removal.
Back Edge-The longitudinal edge parallel to the toothed edge.
Side-The flat surface between the toothed edge and the back edge.
Set-The projection of teeth from the side of the blade, to provide cutting clearance.
Staggered Set-The transverse setting or staggering of groups of teeth.
Wavy Set-The transverse setting or staggering of groups of teeth in the wave form.
MATERIAL USED FOR HACKSAW BLADES
A blade hardened uniformly except for the area adjacent to the pin holes.
2) Flexible Blade (Type B)
A blade hardened uniformly along the length of toothed edge.
A blade uniformly hardened and tempered along the length of toothed edge and the back edge with the centre of the blade in soft condition and the back edge either soft or hard.
4) Spring
A blade hardened uniformly along the length of toothed edge, the remainder being spring tempered.
5) Shatterproof Blade (Type E)
A hand hacksaw blade of any type or quality so Manufactured that it will resist breakage but if breakage occur, it will not fragment into more than two pieces.
DESIGNATION OF HACKSAW BLADES:
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