Expertly engineered for high-precision manual threading operations in demanding hydraulic, automotive, and high-pressure fluid-handling environments, the Somta NPT Straight Flute Bottoming Hand Tap range is the definitive industrial choice for cutting National Pipe Taper profiles. Operating on the standard American 60° thread form with an exact 1:16 taper profile, these premium high-speed steel (HSS-E) tools feature a robust straight flute geometry and a reinforced square drive shank optimized for secure manual wrench engagement. The precision-ground bottoming lead profile features a short 1-to-2 thread chamfer, allowing machinists to manually cut fully formed, pressure-tight pipe threads down to the absolute base of blind holes, fuel blocks, and deep casting manifolds. Engineered by Somta to handle intense manual torque with maximum torsional rigidity, this heavy-duty pipe tap series is optimized to deliver exceptional tool life and perfect pitch compliance when threading 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