OSG Threading Tap - BSF Spiral Flute HSS-E - Steam Oxide Coated - Blind Hole - 1 x 10The OSG BSF Spiral Flute Threading Tap provides machinists and toolmakers with a reliable solution for creating precise internal threads in blind holes. Built from HSS E material and finished with a steam oxide coating, it supports consistent performance during demanding threading operations. Material: High speed steel with cobalt (HSS E) construction maintains edge strength at elevated temperatures. Coating: Steam oxide surface treatment reduces