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Union Butterfield 1580(UNC) High-Speed Steel Thread
Union Butterfield 1580(UNC) High-Speed Steel Thread
Union Butterfield 1580(UNC) High-Speed Steel Thread
Union Butterfield 1580(UNC) High-Speed Steel Thread
Union Butterfield 1580(UNC) High-Speed Steel Thread

Union Butterfield 1580(UNC) High-Speed Steel Thread Forming Flute Tap, Uncoated (Bright) Finish, Round Shank with Square End, Bottoming Chamfer, H5 Tolerance, 4-40 Thread Size

Product ID : 42376578


Galleon Product ID 42376578
UPC / ISBN 698464021787
Shipping Weight 0.2 lbs
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Model 1310015
Manufacturer Union Butterfield
Shipping Dimension 2.8 x 0.31 x 0.2 inches
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Union Butterfield 1580(UNC) High-Speed Steel Thread Features

  • Cold-forms threads in through holes and blind holes without producing chips

  • Spiral forming lobe pattern for reducing tapping torque

  • High-speed steel for compatibility with a variety of materials

  • Available in UNC (Unified Coarse) or UNF (Unified Fine) right-hand thread options for different applications

  • Round shank with square end helps to minimize rotation in the tool holder


About Union Butterfield 1580(UNC) High-Speed Steel Thread

The Union Butterfield 1580(UNC)/1580(UNF) uncoated, high-speed steel thread forming tap has a round shank with a square end and is used for cold-forming right-hand threads in ductile materials such as aluminum, brass, bronze, low-carbon steel, and leaded steel. It is available in two different ANSI thread specification standards: UNC (Unified Coarse) and UNF (Unified Fine). It is suitable for threading through holes (extending through the workpiece) and blind or bottoming holes (with only one opening). The Rol-Rite design reduces tapping torque. The spiral lobe pattern with no grooves makes this design especially suitable for interrupted holes and for through holes in thin sections. 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 square end shank helps to minimize rotation in the tool holder. This thread forming tap can be used in machines such as drill presses or lathes. Union Butterfield 1580 taps 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. Taps in this series are suitable for ANSI 2B and 3B tolerance classes: 2B is an average quality fit for commercial and industrial fasteners; 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 poin