ANXCD5BUSYatora General Purpose Spiral Flute Tap UNC 5BUSSold0pcsMade of HSS-EX, the UNC 5BUS is a French-brand spiral flute tap, ideal for tapping blind (non-through) holes — its spiral flutes pull chips back toward the shank, keeping the hole bottom clear. Available in 36 sizes (thread dia 1~9, pitch 8~56, thread length 2.5mm, overall length 42~125mm, shank dia 3~20mm). A TiN coating adds a hard golden film for better wear and anti-galling, extending tool life. Suitable for machining carbon and alloy steel, stainless steel, cast iron, non-ferrous metals like aluminium and copper, workpiece hardness up to HRC40. French brand, consistent quality.
Product Categories
Tags
Product Overview: HSS Tiger General-Purpose Spiral Flute Tap UNC – 5BUS 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 UNC American standard coarse thread spiral blind hole tapping accuracy, multi-material versatility, and tool consistency.
- Tiger General-Purpose UNC Spiral Flute Blind Hole Design: Features a Tiger (TIGER) general-purpose spiral flute tap geometry that pulls chips upward and out of the hole — optimized for versatility across multiple materials, recommended for UNC blind hole tapping of carbon steel, stainless steel, cast iron, and non-ferrous metals, effectively addressing multiple workpiece material UNC blind hole tapping requirements with a single tool.
- HSS-EX Ultra-High Performance Substrate: Manufactured with HSS-EX ultra-high performance high-speed steel, with maximum machining hardness up to HRC40 — delivering superior hardness, toughness, and wear resistance compared to standard HSS and HSS-CO, recommended for high-demand applications requiring long-duration stable UNC blind hole spiral tapping.
- TiN Coating Enhancement: The surface is treated with TiN coating, providing good wear resistance and heat resistance — recommended for continuous UNC spiral blind hole tapping across various materials, effectively extending tool change intervals and suppressing cutting heat accumulation.
- 36 UNC Specification Ultra-Wide Coverage: Available in thread diameter 1–9 inches and pitch 8–56 TPI across 36 specifications — recommended as the most comprehensive UNC blind hole spiral tapping stock tool for factories and machining centers, covering all types of blind hole tapping needs for common North American specification workpieces.
【Machining Applications & Uses】
- Primary Use: UNC multi-material general-purpose blind hole spiral tapping, NC machining center UNC high-efficiency automatic blind hole tapping, and North American specification cross-material UNC blind hole thread forming.
- Recommended Work Materials:
- P-Class (Carbon Steel / Alloy Steel): Structural steel, carbon steel, and alloy steel — recommended for hardness below HRC40, where HSS-EX combined with TiN coating delivers stable and long-lasting UNC blind hole tapping performance.
- M-Class (Stainless Steel): SUS304, SUS316, and other high-toughness stainless steel — the Tiger general-purpose spiral geometry effectively manages continuous chip upward evacuation, combined with HSS-EX substrate to suppress work hardening, recommended for use with appropriate cutting fluid.
- K-Class (Cast Iron): Cast iron and gray iron — the TiN coating provides outstanding wear-resistant UNC blind hole tapping tool life.
- N-Class (Non-Ferrous Metals): Aluminum alloys, pure copper, brass, and other non-ferrous metals — the spiral flute design ensures smooth UNC blind hole chip evacuation, preventing built-up edge from affecting thread quality.
