Seco 03305476 Pipe Tap 3/8-19 Bspp 5 Flutes Tialn Hss

Product Description

The SECO 03305476 is a British Standard Pipe Tap designed for cutting 3/8-19 BSPP (British Standard Pipe Parallel) threads in through-holes and blind-hole applications requiring a modified bottoming chamfer. Manufactured from high-speed steel with a TiAlN coating, the tap provides improved heat resistance and extended tool life in ferrous and non-ferrous materials. The 5-flute design improves chip control and distributes cutting forces across more cutting edges for stable, consistent thread formation. Overall length is 3.937 inches and shank diameter is 0.472 inches. This tool is part of the SECO MTS series and is installed by machinists, pipefitters, and maintenance technicians working with BSPP-threaded fittings and ports.

The 03305476 is suited for tapping BSPP parallel pipe threads in applications such as hydraulic manifolds, pneumatic components, fluid-power housings, and pipe fittings that conform to British Standard Pipe specifications. The modified bottoming chamfer allows threading closer to the bottom of a blind hole than a standard taper or plug chamfer, making it well-suited for tight-depth applications. Coolant-through is not supported on this tap, so external coolant or cutting fluid application is recommended when threading at production volumes or in harder materials.

Key Features

• 3/8-19 BSPP thread form for British Standard Pipe Parallel applications
• Modified bottoming chamfer for threading close to the bottom of blind holes
• 5-flute geometry distributes cutting load and improves chip evacuation
• High-speed steel construction for toughness across a range of workpiece materials
• TiAlN coating improves surface hardness and heat resistance for extended tool life
• Part of the SECO MTS series for consistent tooling system compatibility

Compatibility

Designed for use in applications requiring 3/8-19 BSPP parallel pipe threads per British Standard specifications. Suitable for hydraulic, pneumatic, and general fluid-power components using BSPP port threading.

Installation Notes

This tap is installed by machinists or maintenance technicians using a tapping machine, CNC machining center, or hand tap wrench. Ensure the pilot hole is drilled to the correct BSPP tap drill diameter before use. Apply cutting fluid or external coolant during the tapping operation to reduce heat buildup, as this tap does not support coolant-through. Secure the workpiece fully before beginning the threading operation to prevent tap breakage.