Expertly engineered for high-precision manual threading operations in specialized repair, maintenance, and workshop environments, our Premium UNS Straight Flute Intermediate Hand Tap range is the definitive industrial choice for cutting Unified Special profiles. Operating on custom, non-standard pitch configurations, these premium high-speed steel (HSS-E) hand 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 utilizes a 3-to-5 thread chamfer that distributes manual cutting forces evenly, ensuring reliable self-alignment, clean entry shearing, and perfect pitch compliance. Engineered to handle tough manual paths with maximum torsional resistance, this versatile special-thread 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
• Unified National Special