Nachi LIST561 1-1/16 HSS Screw Machine Length Straight Shank Drill Bit
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The Nachi LIST561 is a 1-1/16" diameter high-speed steel (HSS) straight shank drill bit in screw machine (stub) length, part number WF23 series, manufactured in Japan. Screw machine length drills feature a shorter flute and overall length compared to jobber-length drills, providing greater rigidity and reduced deflection, making them well-suited for use in turret lathes, screw machines, and CNC machining centers where close-tolerance hole location is required. The black oxide surface treatment visible in the photos reduces friction and provides mild corrosion resistance while retaining the base HSS substrate's toughness for drilling steel, cast iron, aluminum, and similar workpiece materials. This is a new, unused tool supplied as a single piece (1 PC) in the original Nachi packaging.
Product Specifications
| Brand | Nachi |
| Catalog / List Number | LIST561 |
| Part Number | 1266103 |
| Drill Diameter | 1-1/16 in (1.0625 in) |
| Shank Type | Straight Shank |
| Length Series | Screw Machine Length (Stub) |
| Material | High Speed Steel (HSS) |
| Coating / Finish | Black Oxide |
| Point Angle | 118° |
| Flute Type | 2-Flute Spiral (Right Hand Cut) |
| Country of Origin | Japan |
| Quantity | 1 PC |
| Condition | New |