Expertly engineered for high-precision manual threading operations in heavy repair, manufacturing, and workshop environments, the Somta UNC Straight Flute Intermediate Hand Tap range is the definitive industrial choice for cutting Unified National Coarse profiles. Operating on the standard 60° Unified coarse thread form, these premium high-speed steel (HSS-E) tools feature a robust straight flute geometry and a standard square drive shank optimized for secure engagement with manual tap wrenches. The precision-ground intermediate lead profile features a 3-to-5 thread chamfer that distributes manual cutting torque evenly to ensure reliable self-alignment, clean entry shearing, and perfect pitch compliance. Engineered by Somta to handle tough manual paths with maximum torsional resistance, this heavy-duty hand tap series is structurally optimized to deliver exceptional tool life and reliable accuracy across a wide range of structural materials, including structural steels, mild steel, AS/NZS 3678 250 and 350 grade plate, free-cutting steels, and unalloyed case-hardened steels.

HSS APPLICATIONS

• Suitable for general purpose use in hand or machine operations
• Taps are produced with precision ground threads
• Good for cutting new threads
• Suited for use in a variety of ferrous and non-ferrous materials

HSS TECHNICAL DATA

• Made from High Speed Steel
• Standard  - ISO529