Titan Usa TC20123 Drill Bit Letter W Solid Carbide 135 Deg

Product Description

The TITAN USA TC20123 is a screw machine length drill bit sized to Letter W (0.3860 inches) and built from solid carbide for demanding, high-repetition drilling applications. The 135-degree split point geometry reduces walking at entry and lowers thrust force, making it well suited for drilling harder steels, stainless, and difficult-to-machine materials. At 3 inches overall length with a 1.375-inch flute length, the stub-length profile increases rigidity and reduces deflection compared to jobber-length drills. Two right-hand regular spiral flutes clear chips efficiently. The bright uncoated finish maintains the carbide substrate at its sharpest edge geometry without added coating thickness.

This bit is used in CNC machining centers, turret lathes, drill presses, and manual mills where a short, rigid cutting tool is required. Screw machine length drills are common in production and repetitive drilling environments across metalworking shops, tool rooms, and maintenance-and-repair operations. The straight cylindrical shank fits standard collets, drill chucks, and ER toolholders in a wide range of spindle setups. It is sized within the 0.3500 to 0.4000 inch diameter range for Series 200 tooling.

Key Features

• Solid carbide construction for hardness and wear resistance in ferrous and non-ferrous metals
• 135-degree split point reduces entry walking and cutting thrust
• Screw machine (stub) length at 3 inches OAL increases rigidity and reduces deflection
• Two regular spiral flutes with 1.375-inch flute length for efficient chip evacuation
• Bright uncoated finish preserves base carbide geometry with no coating buildup
• Straight cylindrical shank compatible with standard collets and drill chucks

Compatibility

Designed as an OEM-style screw machine length drill bit for use with standard straight-shank toolholders, ER collets, and drill chucks accepting a 0.3860-inch shank diameter. Sized within the Series 200 product family covering the 0.3500 to 0.4000 inch decimal inch range.

Installation Notes

Installation and use should be performed by qualified machinists or tooling technicians familiar with carbide cutting tool handling. Secure the shank fully in the chuck or collet before beginning any cut, and verify runout with a dial indicator when close-tolerance bores are required. Carbide is brittle — avoid impact loading, interrupted cuts beyond the tool rating, and side loads that can cause chipping or fracture. Power down and de-energize the spindle completely before changing or inspecting the bit.