Union Butterfield 1500(UNC) High-Speed Steel Hand Tap 7/8 -9 Thread Size

Size:7/8 -9 Thread Size H4 Tolerance | Style:Plug Chamfer The Union Butterfield 1500(UNC)/1508(UNF)/1500(UNS) uncoated high-speed steel hand threading tap has straight flutes and a round shank with a square end and is used to create right-hand threads in a range of materials. It is available in three different ANSI thread specification standards: UNC (Unified Coarse) UNF (Unified Fine) or UNS (Unified Special). The straight flutes are suitable for threading through holes (extending through the workpiece) and blind or bottoming holes (with only one opening). Right-hand threads are designed to tighten when the head or nut is rotated clockwise (the most common threading direction). High-speed steel (HSS) is a common general-purpose steel for cutting tools and is compatible with a variety of materials. With no coating or surface treatment this uncoated tool can be used on a broad range of materials and provides an economical alternative to coated tools. The round shank with square end makes it suitable for hand or power-driven applications. This tool can be used in machines such as drill presses or lathes or with hand tools such as tap wrenches. In the Union Butterfield 1500(UNC) and 1500(UNS) series all taps have four flutes. In the 1508(UNF) series all taps have three flutes.