Tap Flute Design Guide | Straight, Spiral & Form Tap Selection

Tap flute design determines chip evacuation, lubrication, and cutting performance. Different flute types suit different threading conditions and materials.

What is Tap Flute

A structural feature for chip removal and cutting geometry.

Main Functions

• Chip evacuation
• Lubrication flow
• Cutting angle formation
• Load distribution

Types of Cutting Taps

Straight Flute Tap

• General purpose
• Manual tapping

Spiral Flute Tap

• Upward chip evacuation
• Best for blind holes

Spiral Point Tap

• Forward chip pushing
• Ideal for through holes

Form Tap

• No chip generation
• High thread strength

Types:

• Oil groove
• Non-flute

Selection Guide

• Blind hole → Spiral flute
• Through hole → Spiral point
• High precision → Form tap