ANBCD5OMPTOversize Spiral Point Tap Metric 5OMPTSold0pcsThe 5OMPT is a French-brand oversize spiral point tap built from HSS-EX high-speed steel, cutting metric threads slightly larger than standard — ideal for leaving clearance for plating, compensating for hole shrinkage so screws seat cleanly, or enlarging existing threaded holes. Its spiral point pushes chips forward for fast, clean threading, making it especially suited to through (non-blind) holes. Available in 72 sizes (metric thread M3~M20, pitch 0.5~2.5, thread length 7.5~50mm). A TiN coating adds a hard golden film for better wear and anti-galling, extending tool life. Suitable for carbon and alloy steel, stainless steel, cast iron, non-ferrous metals like aluminium and copper, workpiece hardness up to HRC45. French brand, consistent quality.
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Oversize Tap
Shrinkage Prevention
Product Overview: HSS Oversize Tap Spiral Point Metric – 5OMPT Series
【Product Features & Why We Recommend It】
- French Brand Professional Quality: Originating from a professional French cutting tool brand with rigorous quality control — recommended for users with high demands on metric through-hole thread repair oversize tapping and undersized hole prevention.
- Oversize Spiral Point Through-Hole Repair Dedicated Design: Features a spiral point oversize tap geometry that pushes chips forward and out of the hole — with a thread diameter specification larger than standard taps, recommended for metric through-hole thread repair and oversize machining after thread stripping, while also recommended for undersized hole prevention prior to tapping to ensure thread dimensions meet requirements after tapping, providing higher repair tapping efficiency in through-hole applications compared to the spiral flute version (5OMST).
- HSS-EX Ultra-High Performance Substrate: Manufactured with HSS-EX ultra-high performance high-speed steel, with maximum machining hardness up to HRC45 — delivering superior hardness, toughness, and wear resistance compared to standard HSS and HSS-CO, recommended for long-duration stable metric spiral point through-hole repair tapping across various materials.
- TiN Coating Enhancement: The surface is treated with TiN coating, providing good wear resistance and heat resistance — recommended for continuous oversize spiral point through-hole repair tapping of carbon steel, stainless steel, cast iron, and non-ferrous metals, effectively extending tool change intervals.
- 72 Metric Specification Wide Coverage: Available in thread diameter M3–M20 and pitch 0.5–2.5mm across 72 specifications — recommended as the high-performance stock tool for metric through-hole spiral point oversize repair tapping in factories and maintenance centers, covering thread repair and undersized hole prevention needs across all types of workpieces.
【Machining Applications & Uses】
- Primary Use: Metric through-hole stripped thread repair and oversize tapping, through-hole undersized hole prevention tapping, and damaged threaded hole functionality restoration.
- Recommended Work Materials:
- P-Class (Carbon Steel / Alloy Steel): Structural steel, carbon steel, and alloy steel — recommended for hardness below HRC45, where HSS-EX combined with TiN coating delivers stable spiral point oversize through-hole repair tapping performance.
- M-Class (Stainless Steel): SUS304, SUS316, and other high-toughness stainless steel — the spiral point design effectively manages continuous chip forward evacuation, recommended for use with appropriate cutting fluid.
- K-Class (Cast Iron): Cast iron and gray iron — the TiN coating provides outstanding wear-resistant through-hole repair tapping tool life.
- N-Class (Non-Ferrous Metals): Aluminum alloys, pure copper, brass, and other non-ferrous metals — the spiral point design ensures smooth through-hole chip evacuation, preventing built-up edge from affecting repair thread quality.
