OSG Threading Tap - Metric Spiral Flute HSS-E - Steam Oxide Coated - Blind Hole - M36 x 4The OSG Metric Spiral Flute Threading Tap in M36 x 4 is a purpose built solution for precision internal threading in blind holes, designed for professional metalworking environments that demand reliability and long tool life. Size and pitch: Internal thread tap for blind holes, M36 x 4, enabling robust, large diameter threads with a 4 mm pitch. Material: HSS E (high speed steel with cobalt) for enhanced toughness and heat resistance during heavy