
High-Precision Grewin&Cowee Spiral Flute Machine Taps for Blind Holes. Spiral Flute Design: Ideal for blind holes with efficient chip evacuation and reduced friction. High Hardness Material: Manufactured with HSS-Co achieving 65-66HRC hardness for durability. Customized Options: Available in various flute types, coatings, and thread sizes to meet specific needs. ISO Standard Compliance: Manufactured to ISO529 standard ensuring precision and compatibility. Versatile Application: Suitable for mild steel, copper, brass, and aluminum in hand or machine tapping. Complete Tap Set: Includes Taper, Plug, and Bottom taps for threading through and blind holes. Fast Sample Delivery: Samples ready in 3-7 days with 3-5 workdays express shipping time. Professional Manufacturer: Over 20 years experience with advanced equipment and strong R&D center.