Precision Twist Drill 6000139 Spotting Drill 90 Degree Hss

Product Description

The PRECISION TWIST DRILL 6000139 is a 90-degree spotting drill designed to accurately locate and start holes before the final drilling operation. Manufactured from high speed steel with a titanium nitride (TiN) coating, it delivers improved surface hardness and extended tool life compared to uncoated HSS tooling. The drill features a 0.5-inch cutting diameter, a 3.75-inch overall length, and a 1.375-inch flute length. It is a single-ended, right-hand cut tool intended for general-purpose spotting applications on ferrous and non-ferrous materials. Machinists and tool-and-die technicians are the primary users.

This spotting drill is suited for general-purpose machine shop and production environments where precise hole location is required before drilling, countersinking, or reaming operations. The 90-degree point angle is widely compatible with standard twist drill geometry, helping reduce drill walk and improve positional accuracy. It fits manual mills, CNC machining centers, and drill presses where a straight cylindrical shank is accepted. The SPSG-90 series targets light-to-medium duty applications across a broad range of materials.

Key Features

• 90-degree drill point angle for accurate hole location and reduced drill walk
• TiN coating increases surface hardness and reduces friction for longer tool life
• High speed steel construction provides toughness across a wide range of work materials
• Spiral flute design aids chip evacuation during spotting operations
• Straight cylindrical shank for direct clamping in standard drill chucks or collets
• Right-hand cut, single-ended configuration for straightforward setup

Compatibility

Designed as a general-purpose spotting drill compatible with machine tool spindles and drill chucks accepting a 0.5-inch straight cylindrical shank. Part of the PRECISION TWIST DRILL SPSG-90 series.

Installation Notes

Installation and use should be performed by qualified machinists or toolroom personnel. Ensure the spindle and workpiece are properly secured before engaging the tool. Set spindle speed and feed rate appropriate to the work material and tool diameter before starting the cut. Never force a dull or damaged spotting drill — inspect the cutting edges before each use.