Osg 11550715 Screw Machine Drill Bit 7/32 in Hss

Product Description

The OSG 11550715 is a screw machine length drill bit designed for high-performance metal drilling in tight-clearance and production applications. Built from high speed steel with a coated finish, this bit measures 7/32 inch (0.2188 inches) in diameter and features a 120-degree faceted point angle with web thinning for reduced entry force. The straight-cylindrical shank and regular spiral flute geometry promote efficient chip evacuation. At 72.00 mm (approximately 2.83 inches) overall length and a 3xD flute-to-diameter ratio, it fits standard drill chucks and is well suited to repetitive hole operations on production lines and in field repair work.

This bit is intended for drilling steel, alloy steel, aluminum, aluminum alloy, and aluminum silicate workpieces. The screw machine length format -- shorter than a jobber bit -- provides added rigidity and reduced deflection, making it a practical choice for CNC drill presses, screw machines, turret lathes, and handheld power drills where stub-length control is needed. Machinists, tool-and-die technicians, and maintenance mechanics are the primary users.

Key Features

• 7/32 inch (0.2188 inches) diameter with a tight tolerance of +0 to -0.018 mm
• 120-degree faceted point angle with web thinning for fast, clean entry
• High speed steel construction with a coated finish for extended tool life
• Straight-cylindrical shank compatible with standard drill chucks
• Screw machine (stub) length at approximately 2.83 inches overall for maximum rigidity
• Right-hand cut, regular spiral flute for efficient chip removal in ferrous and non-ferrous materials

Compatibility

Designed for use in standard drill chucks accepting a 6.00 mm straight-cylindrical shank; compatible with primary workpiece materials including steel, alloy steel, aluminum, aluminum alloy, and aluminum silicate as specified for OSG Series 1150.

Installation Notes

Secure the shank fully in the drill chuck and verify concentricity before operation. Use appropriate cutting fluid or coolant for steel and alloy steel workpieces to prevent heat buildup, noting that this bit does not support coolant-through delivery. Inspect the cutting edges for chipping or wear before each use and replace the bit if the point geometry is compromised. Follow applicable workplace safety standards for rotating cutting tools, including proper workpiece fixturing and eye protection.