Carmex Threading Tap - Spiral Flute - UNC Supercut Tap - Powder Metal - 1/2 x 13The Carmex Threading Tap with Spiral Flute is a precision tool built for professionals who demand fast, reliable UNC threading in challenging materials. Designed for 1 2 x 13 UNC applications, it delivers consistent results in production or shop settings. Thread type: Spiral flute UNC Supercut tap engineered for efficient chip clearance and smooth cutting in UNC threads. Size pitch: 1 2 x 13 UNC for standard Unified National Coarse threading needs.