Precision, speed, and reliability come together in the Wiseman Threading Tools Second Lead Metric HSS Tap Right Hand – M27x3. This general‑purpose tap is engineered for consistent, clean threads in a variety of metals, making it a dependable choice for manual tapping and shop workflows alike.

Why this tap stands out

• High-speed steel ground thread with no coating, delivering predictable cutting action and solid strength for frequent use in metalworking projects.
• Second lead (double‑start) design cuts two threads per revolution, accelerating hole creation and reducing tapping time while maintaining thread quality.
• Right-hand thread aligns with standard machining practices, ensuring compatibility with common fasteners and assemblies.
• Metric, ISO 529 dimensions guarantee precise thread form and compatibility with M27x3 holes and nuts, simplifying part interchangeability.
• USA plug lead designed to meet familiar American manufacturing standards, making it a reliable choice for US-built projects and equipment.

What problems it solves

• When you need fast, accurate threading without sacrificing hole integrity, this tap’s second‑lead action reduces cycle times and chip buildup.
• Tapping in through-holes or shallow pockets benefits from the robust HSS core, which resists wear and maintains dimensional accuracy across multiple uses.
• ISO-compliant dimensions mean fewer fit issues with standard M27x3 fasteners, minimizing trial fittings and reworks.

Ideal use cases

• General metalworking projects requiring M27x3 threads in steel, cast iron, or aluminum.
• Prototyping and repair tasks where quick thread formation is a time saver (thanks to the second lead).
• Shop setups that rely on dependable, high‑quality taps for frequent manual tapping with a T‑handle or standard tap wrench.

Practical tips for best results

• Lubricate with a suitable cutting fluid to extend tip life and improve chip evacuation during tapping.
• Begin with a pilot hole sized for M27x3 to reduce torque and promote clean thread formation.
• Maintain steady pressure and a straight approach; back off periodically to clear chips and prevent binding.
• Use a calibrated tap wrench to apply uniform torque and protect the square drive from chatter.

Specifications at a glance

• Tool: Wiseman Threading Tools Second Lead Metric HSS Tap
• Thread type: Right hand
• Lead: Second lead (double‑start) for faster threading
• Thread size: M27x3 (metric, ISO 529 dimensions)
• Material: High-speed steel, ground finish, uncoated
• Lead compatibility: USA plug lead