Cleveland
Cleveland HSS M2 Rectangular Tool Bit 851 3/8 x 5/8 in x 6 in
High-speed steel rectangular tool bit for lathe work, model 851, 6 in length
- HSS M2 steel resists wear during heavy machining
- 6 in length provides reach for deep turning operations
- 3/8 x 5/8 in cross-section fits standard tool holders
- Right- and left-hand use doubles workshop versatility
- Non-beveled blank allows custom grind geometry
High-Speed Steel Lathe Blank
The Cleveland HSS M2 rectangular tool bit is a ground blank for lathe work. Machinists and tool-and-cutter grinders shape it into custom turning, facing or threading tools. High-speed steel M2 grade holds a keen edge in mild and medium-carbon steels.
3/8 by 5/8 in Cross-Section, 6 in Length
The 3/8 in width and 5/8 in height provide a rigid section for moderate depths of cut. Six inches of overall length gives enough grip in a standard tool holder while leaving room to grind multiple tool geometries. Heavy roughing on large diameters will exhaust the cross-section strength.
Replaces Worn or Undersized Blanks
Shops replace undersized carbon-steel blanks or worn HSS bits with this M2 grade when longer edge life is needed. The jump is worth it when cycle time matters and regrind intervals must be stretched. Not suited for high-volume production that demands carbide or coated grades.
Highlights
- HSS M2 steel resists wear during heavy machining
- 6 in length provides reach for deep turning operations
- 3/8 x 5/8 in cross-section fits standard tool holders
- Right- and left-hand use doubles workshop versatility
- Non-beveled blank allows custom grind geometry
Specifications
| Brand | CLEVELAND |
|---|
Questions about this item
Will this 3/8 in x 5/8 in rectangular blank fit the tool holder on my older lathe?
The blank measures 3/8 in wide by 5/8 in high and 6 in long, so check your holder's pocket dimensions against those figures before mounting.
How do I verify the bit is cutting correctly once I have ground it?
After grinding, the high-speed steel edge should produce a continuous, brightly coloured chip in mild steel without chipping or excessive heat buildup.
Does the package include a pre-ground cutter or just the 851 blank?
Only the rectangular HSS M2 blank is supplied; you must grind the cutting geometry yourself or buy a separate ground tool.
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