Carmex Threading Tap - Forming Tap (Roll) - UNC Supercut Tap - Powder Metal - 5/16 x 18Meet Carmex's Threading Tap Forming Tap (Roll) UNC Supercut Tap, a purpose built solution for professionals who form UNC threads with reliability, efficiency, and precision. Designed for metalworking tasks that demand durable tooling and consistent results, this tap helps you achieve strong, accurate threads every time. Tap Type: Forming Tap (Roll) that creates threads by plastic deformation, delivering smooth, burr free UNC threads without cutting