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Union Butterfield 1582(UNC) High-Speed Steel Spiral Flute Tap, Uncoated (Bright) Finish, Round Shank with Square End, Bottoming Chamfer, 6-32 Thread Size
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About Union Butterfield 1582(UNC) High-Speed Steel Spiral
The Union Butterfield 1582(UNC)/1582(UNF) uncoated, high-speed steel spiral flute tap has a round shank with a square end and is used to create right-hand threads in a range of materials. It is available in two different ANSI thread specification standards: UNC (Unified Coarse) and UNF (Unified Fine). The 30-degree spiral flutes of this tap pull chips back from the tip of the tool, up and out the hole to prevent clogging. This characteristic makes the tap suitable for blind or bottoming holes. Right-hand threads are designed to tighten when a 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 helps to minimize rotation in the tool holder. 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 1582(UNC)/1582(UNF) series all taps have two flutes. They are available with a variety of chamfers. This tap conforms to ANSI standards and can create threads to a depth 2 ½ times its diameter. It is suitable for the ANSI 3B tolerance class: 3B produces close-tolerance fasteners that resist loosening, as in aerospace applications. Taps produce internal threads in previously formed holes and can be used in machines (such as drill presses) or with hand tools. Common types of taps include hand taps, spiral point taps, spiral flute taps, thread forming taps, and pipe taps. Hand taps (straight-flute taps) collect chips in the straight flutes of the tool; spiral point taps push chips through holes ahead of the tool; and spiral flute taps pull chips back from the tip of the tool, up and out the hole. Thread forming taps, also known as cold forming taps, pre
