Wiseman Threading Tools Taper Lead Metric HSS Tap Right Hand - M18x1.25 is a precision-ground cutting tool built for dependable internal threading in metal. This uncoated high-speed steel tap features a taper lead design that eases entry, minimizes chatter, and helps you reach full thread depth with confidence. Meeting ISO 529 dimensions, it’s the reliable choice when you need clean, accurate threads on machinery housings, brackets, and fastener assemblies.

Why this tap stands out

• Taper lead geometry starts the thread smoothly, reducing the chance of cross-threading and making it easier to align the tap in challenging workpieces.
• High-speed steel (HSS), uncoated provides robust cutting performance with long-term durability for general-purpose threading tasks.
• Right-hand thread is the most common configuration, ideal for standard fastener applications and typical production workflows.
• Metric sizing, M18x1.25 ensures compatibility with a wide range of bolts and fittings used in automotive, fabrication, and maintenance projects.
• ISO 529 compliant dimensions give you predictable threads that fit standard nuts and hardware, simplifying replacements and repairs.

Ideal uses and scenarios

• Tapping through-holes and blind holes in aluminum, mild steel, and other machinable metals.
• Creating reliable internal threads for mounting bolts, brackets, linkage components, and machine housings.
• Workshop repairs where a consistent, true-thread cut is essential to restore damaged threads or to add new fasteners.
• Projects in automotive, home shop, and light fabrication environments where speed, accuracy, and durability matter.

How to use

• Prepare the hole with the correct pilot size and ensure a clean, burr-free entry.
• Lubricate the tap and workpiece to reduce heat and prolong tool life.
• Align the tap square to the hole and apply steady, light pressure to begin cutting.
• Rotate gradually to cut the full depth, pausing to back off and clear chips as needed.
• Use a tap wrench or a machine tapping setup for consistent results; test the new threads with a matching bolt after finishing.

Specifications at a glance

• Material: High-Speed Steel (HSS)
• Coating: Uncoated
• Thread type: Right-hand
• Lead: Taper
• Thread size: M18x1.25 (ISO 529)
• Application: General-purpose threading with predictable, standard-thread results

Designed for professionals and skilled hobbyists alike, this Wiseman tap delivers reliable performance, consistent thread quality, and ease of use across a variety of metalworking tasks. When your project calls for a precise, durable internal thread in the M18x1.25 range, this taper-lead HSS tap is built to deliver clean cuts, repeatable results, and lasting value in every job you tackle.