OSG Threading Tap - BSF Spiral Point HSS-E - Steam Oxide Coated - Through Hole - 1.1/8 x 9 ISO Insert - KN Style accurately finished holes with dependable

accurately finished holes with dependable repeatability

Standard compliance — engineered to ISO 529 dimensions

high-quality holes you can trust project after project

shops can simplify their threading workflow

The combination of carbide hardness and protective coating delivers reliable performance

OSG Threading Tap - BSF Spiral Point HSS-E - Steam Oxide Coated - Through Hole - 1.1/8 x 9 ISO Insert - KN Style accurately finished holes with dependableThe OSG BSF Spiral Point Threading Tap in HSS E with steam oxide coating is built for through hole tapping, delivering precise British Standard Fine threads with enduring reliability. Its designed for machinists who value accuracy, durability, and efficient cycle times in metalworking projects. Threading type & size: BSF (British Standard Fine) spiral point threading tap for through holes, 1 1 8" diameter, 9 TPI. Material: High Speed Steel with cobalt