Drill Service (Horley) Ltd Contact sales on sales@drill-service.co.uk or call +44 (0)1293774911 MM-BLU - Blue Ring Taps![]() The Blue Ring Spiral Point tap is designed to cut threads in normal and deep through holes in tough stainless steels and high alloyed tool steels which have a tendency to close after threading. The Blue Ring Spiral Flute tap is designed to cut threads in blind holes in tough stainless and steels which have a tendency to close after threading. DIN 371, Full Diameter Shank Machine Taps, HSSE-V ![]()
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