Hertel 89320634 Screw Machine Drill Bit Wire 22 Hss

Product Description

The HERTEL 89320634 is a screw machine length drill bit sized for wire gauge number 22, with a decimal diameter of 0.1570 inches. Screw machine length bits are shorter than jobber length, providing added rigidity and reduced deflection when drilling on lathes, screw machines, and short-travel drill press setups. The 118-degree split-less point is a general-purpose geometry suited to most common metals and plastics. The high-speed steel construction handles moderate heat buildup without losing edge hardness. The bright, uncoated finish keeps the surface true to the base material. Right-hand cut. Overall length is 2.125 inches with a flute length of 1.0625 inches. Machinists, tool and die workers, and maintenance technicians are the typical end users.

This bit is used in production machining and maintenance environments where a compact drill profile is required. Screw machine length geometry suits CNC lathes, turret lathes, drill presses with limited quill travel, and bench-top drilling fixtures. The 0.1570-inch diameter falls within the 0.1500 to 0.2000 inch size range, making it appropriate for pilot holes, through-holes in sheet metal, and clearance holes for small fasteners in ferrous and non-ferrous stock. General-purpose grade means it is not optimized for hardened steels or exotic alloys, but covers the broad range of everyday drilling tasks in a shop or field setting.

Key Features

• Wire gauge number 22 size at 0.1570 inches decimal diameter
• Screw machine length for increased rigidity and reduced deflection
• 118-degree point angle for general-purpose drilling in metal and plastic
• High-speed steel construction resists heat during moderate-duty drilling
• Bright, uncoated finish maintains dimensional accuracy
• Right-hand cut, suitable for standard drill chucks and collets

Compatibility

Designed as a general-purpose screw machine length drill bit for use in any standard drill chuck or collet accepting a straight shank in the 0.1570-inch diameter range, including CNC lathes, turret lathes, screw machines, and bench drill presses.

Installation Notes

Install in a properly rated drill chuck or collet and verify the shank is fully seated and secured before operation. Ensure the workpiece is clamped or fixtured to prevent rotation during drilling. Use appropriate cutting fluid or lubricant for ferrous materials to extend edge life. Inspect the cutting edges for wear before each use and replace the bit if chipping or rounding is visible.