The Wiseman M28x2 Second Lead HSS Threading Tap is a purpose-built tool designed to deliver fast, reliable threads in a range of general-purpose metalworking tasks. Made from high-speed steel and precision-ground for clean engagement, this uncoated tap meets ISO 529 dimensions and features a right-hand thread with a second-lead (double-start) geometry for quicker material removal and smoother entry.

• Material and finish: High-speed steel (HSS) ground thread, uncoated for versatile cutting and easy resharpening; designed for general-purpose threading on non-hardened metals.
• Thread specs: Metric M28x2 size with a right-hand, second-lead thread; ISO 529 compliant to ensure consistent pitch and engagement across standard fasteners.
• Design advantages: The second-lead (double-start) geometry advances more per turn, reducing processing time and delivering smoother cuts, especially in through-holes.
• Ideal applications: Use for repair and fabrication in materials such as aluminum, mild steel, brass, and other non-hardened alloys; perfect for through-holes and general-purpose tapping projects in workshops and production floors.
• Usage and care: Pair with a compatible tap wrench and use appropriate cutting fluid to extend tool life; keep the tap clean and dry after use to preserve thread quality.
• Longevity and value: Ground accuracy supports consistent thread fit, while the uncoated finish keeps cost down and allows easy sharpening for repeated use.