Titan Usa TC20021 Screw Machine Drill Bit 21/64 in Carbide

Product Description

The TITAN USA TC20021 is a solid carbide screw machine length drill bit designed for high-precision drilling in tight-tolerance applications. Built to Series 200 standards, this bit features a 135-degree split point that reduces walking and requires no center punch on most materials. The straight-cylindrical shank seats securely in standard drill chucks. At 3 inches overall length, the stub-style body provides the rigidity needed to minimize deflection when drilling harder metals, stainless, cast iron, or composite materials. The bright, uncoated finish is suitable for use across a wide range of workpiece materials. HVAC fabricators, plumbers, and electricians reach for screw machine length bits when clearance is limited or hole location accuracy is critical.

This bit is suited for bench drill press work, CNC drilling centers, and hand-held drill motors where a stub-length tool improves control. The 21/64 inch diameter is a common size for tapping and clearance holes in trade applications, including conduit bracket fasteners, sheet metal enclosures, and mechanical equipment frames. The 2-flute regular spiral design efficiently evacuates chips during through-hole and blind-hole operations in both ferrous and non-ferrous stock.

Key Features

• Solid carbide construction for extended tool life in hard and abrasive materials
• 135-degree split point reduces thrust force and eliminates center-punch requirement
• Screw machine (stub) length of 3 inches overall for improved rigidity and reduced deflection
• 1-3/8 inch flute length handles typical material thickness in trade sheet metal and structural work
• Bright uncoated finish compatible with a broad range of workpiece materials and cutting fluids
• Right-hand cutting, regular spiral, 2-flute design for efficient chip evacuation

Compatibility

Designed as an OEM-style replacement or direct drop-in for screw machine length drill bit applications requiring a straight-cylindrical shank and 21/64 inch diameter in Series 200 solid carbide tooling.

Installation Notes

Installation of this bit should be performed by a qualified machinist or trade professional familiar with rotary cutting tools. Secure the straight shank fully in the drill chuck and verify runout before drilling. Always wear appropriate eye protection and ensure the workpiece is properly clamped before initiating a cut. Follow applicable OSHA and shop-safety guidelines when operating drilling equipment.