Item #880


3 available at time of listing. This listing is for 1 item. Volume discount applies.


The Kennametal T651M300X350R6HX (often styled with an extension as T651M300X350R6HX-XL / EDP 4153890) is an industrial-grade, high-performance metric spiral flute tap engineered for heavy-duty production tapping. It is manufactured from premium cobalt/powdered-metal high-speed steel (HSS-E-PM) to withstand elevated thermal and mechanical stress. 
Technical Nomenclature Breakdown
  • M30 X 3.5: Metric coarse thread size (30mm nominal thread diameter with a 3.5mm pitch).
  • KP6525: The proprietary Kennametal material grade—specifically engineered for multi-application steel, stainless steel, and iron tapping operations.
  • 6HX: The thread class of fit. The "X" denotes a specialized manufacturing tolerance profile designed for high-tensile materials or components undergoing post-tap heat treatments/coatings.
  • 15RHSF: 15-degree Right-Hand Spiral Flutes, which efficiently pull chips backward out of blind holes.
  • SB0T: Semi-Bottoming chamfer style (typically a 2-to-3 pitch lead), optimized for threading close to the base of blind holes.
  • CH-X-LG: Coolant-through design optimized for extended or extra-long reach applications. 
Physical Dimensions & Sourcing
  • Flutes: 5-flute configuration for superior chip load management and stability.
  • Overall Length: 9.875 inches (extra-long series).
  • Standard Industrial List Price: Typically retails brand new between $449.00 and $449.95 through distribution networks like Superior Machine Tools.
  • Surplus Availability: Unused surplus stock or open-box listings can sometimes be found via liquidation channels or secondary trading platforms like eBay for roughly $149.00.