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UNEF and UNS external threads with a single insert
repeatable results from parting-off and grooving operations
ensuring stable alignment during insertion for dependable checks
enabling seamless use across milling machines
OSG Threading Tap - BSF Spiral Flute HSS-E - Steam Oxide Coated - Blind Hole - 1/2 x 16 Mobile Workbench UNEF and UNS external threadsThe OSG BSF Spiral Flute Threading Tap in 1 2 x 16 is built for precise blind hole threading, delivering clean, accurate threads in demanding steel and alloy workpieces. Designed for machinists and shop technicians who value reliability, this tap combines advanced tooling chemistry with efficient chip evacuation for consistent results. Threading standard and size: BSF (British Standard Fine) spiral flute threading tap, 1 2" diameter with 16 TPI,
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