#4 - 0.66 BA HSS Blue Wizard® Spiral Point Machine Tap CT81404

HSS

BSW (British Standard Whitworth) is similar to UNC but differs in that the thread form for a BSW is 55° vs. the 60° for UNC

BSF (British Standard Fine) is a finer pitch series, also with a 55° degree thread form

BA (British Association) is a metric thread system devised by the British for small screws used in components with a thread form of 47 ½°

Spiral point forces the chips ahead of the tap - designed for through hole applications

Suitable for various steels (up to 32Rc) and stainless steel

Ferrous oxide surface treatment increases wear resistance, improves chip flow and reduces chip welding

The ferrous oxide surface treatment also enables the tap to absorb the lubricant / cutting fluid

Clarkson Osborn Catalog

Size #4 - 0.66 BA

Flute length 17mm

Overall length 50mm

Package quantity/sold as each 1

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