The Wiseman Threading Tools Second Lead Metric HSS Tap Left Hand - M36x4 is a precision, uncoated high-speed steel threading tap designed for robust, accurate left-hand thread production. Built to ISO 529 dimensions, this tap delivers dependable geometry for demanding projects where a left-handed fastener is required, with the added efficiency of a second lead for faster cutting progress.

Left-hand threading is essential when the application relies on threads that tighten in the opposite direction, countering vibration or reverse torque in assemblies like rotating equipment, gear housings, or hydraulic components. The second lead of this tap means more aggressive cutting action while maintaining control, helping you complete deeper threads with fewer turns and reduced tool wear in appropriate materials.

Key features and benefits

• Size and form: M36x4 left-hand thread, second lead, ground finish, uncoated HSS for reliable performance on standard metals.
• Compliance: ISO 529 dimensional compatibility ensures consistent thread profiles across compatible workpieces and tap sets.
• Efficiency: Second lead design accelerates material removal, cutting deeper threads with fewer revolutions while preserving chip evacuation.
• Versatile material use: Ideal for steel, cast iron, and ductile metals commonly found in industrial, automotive, and machinery contexts.
• Durability and reliability: High-speed steel construction provides wear resistance and long-lasting precision when paired with appropriate lubrication.
• Practical operation: Works with standard tap wrenches and cutting fluids to maintain optimal surface finish and reduce heat buildup.

Designed for professionals who demand accurate left-handed threads without compromise, this tap excels in fabrication and repair tasks where left-hand engagement is critical for secure, vibration-resistant fastening. When precision and efficiency matter—whether you’re repairing equipment, building custom components, or maintaining heavy machinery—the Wiseman M36x4 left-hand tap delivers consistent results and dependable performance.

Tips for optimal results: use a quality cutting fluid or oil to reduce friction, keep the workpiece well-supported to minimize deflection, and regularly back off slightly to clear chips and prevent binding. Store the tap in a dry, clean environment to preserve its precision for the next job.