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Unified National Fine (UNF) thread form was introduced in 1948 as an attempt to standardise thread forms in the USA
Heavy duty construction with locking pins
HSS Button Dies (also known as Adjustable Dies) are designed for cutting external threads
The high-speed steel cobalt (HSS-Co) cutting edge provides shock resistant teeth and resists tooth strippage
8mm Diamond Hex Shank Core Drill Unified National Fine (UNF) thread8mm 1 4" Hex Shank Diamond Core Drill Brilliant Diamond Vacuum Brazed Core Drill. Vacuum brazed, self lubricating, wax filled diamond core drills. One piece hex shank. Suitable for drilling tiles, ceramics, vitrified products, porcelain, natural and composite engineered stone, monocottura, fibreglass, graphite, carbon fibre, FRP's, and other highly abrasive materials. The wax filled core lubricates the cutting edge allowing dry, water free, drilling.
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