Osg 61516 Screw Machine Drill Bit 0.063 in Hss

Product Description

The OSG 61516 is a screw machine length drill bit designed for high-performance drilling in metalworking and light industrial applications. It carries a 0.063 inch (1/16 inch) diameter with a 140-degree faceted point angle and a web-thinned, tapered web configuration that reduces entry force and improves chip evacuation. The bit is manufactured from high speed steel with a coated finish for added wear resistance. At 42.00 millimeters overall length with a 3.00 millimeter straight-cylindrical shank, this stub-length geometry provides rigidity and accuracy in short-reach drilling setups. It is a right-hand cut tool with a regular spiral flute and is sold individually.

This drill bit is suited for production and maintenance drilling in steel, stainless steel, aluminum, aluminum alloy, and aluminum silicate workpieces. The screw machine length format makes it a standard choice for drill press, CNC, and turret lathe applications where reduced overhang and vibration control matter. The 5xD flute-to-diameter ratio and 10.00 millimeter flute length support chip clearance in shallow-hole drilling operations common in fabrication shops and machine maintenance environments.

Key Features

• 0.063 inch (1/16 inch) diameter with diameter tolerance of +0 to -0.014 millimeters
• 140-degree faceted point angle with web-thinned, tapered web for reduced thrust and cleaner entry
• High speed steel construction with coated finish for wear and heat resistance
• Regular spiral, 2-flute design with 5xD flute-to-diameter ratio for efficient chip evacuation
• Straight-cylindrical shank compatible with standard drill chucks and collets
• Screw machine (stub) length for maximum rigidity in close-tolerance drilling

Compatibility

Designed as an OSG Series 1100 screw machine length drill bit suitable for use in standard drill chucks, collet holders, and turret lathe tooling that accept a 3.00 millimeter straight-cylindrical shank.

Installation Notes

Installation is performed by qualified machinists or maintenance technicians using a compatible drill chuck or collet system rated for the shank diameter. Secure the shank fully in the chuck before operation and verify runout before drilling into the workpiece. Do not exceed the recommended feed and speed parameters for the workpiece material. Inspect the cutting edges and coating condition before each use and replace the bit if chipping or wear is observed.