Union Butterfield 1586(UNF) High-Speed Steel Spiral Flute Tap, Uncoated (Bright) Finish, Round Shank with Square End, Plug Chamfer, 5/16''-24 Thread Size


Union Butterfield 1586(UNF) High-Speed Steel Spiral Flute Tap, Uncoated (Bright) Finish, Round Shank with Square End, Plug Chamfer, 5/16''-24 Thread Size by Union Butterfield at Reclaimed Wood Blog. MPN: 15865/16X243FLNO2. Hurry! Limited time offer. Offer valid only while supplies last. The Union Butterfield 1586(UNC)/1586(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 (w


Union Butterfield 1586(UNF) High-Speed Steel Spiral Flute Tap, Uncoated (Bright) Finish, Round Shank with Square End, Plug Chamfer, 5/16''-24 Thread Size by Union Butterfield
4.5 out of 5 stars with 29 reviews
Condition: New
Availability: In Stock
$29.01


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Product Description & Reviews

The Union Butterfield 1586(UNC)/1586(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 (with only one opening). 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 1586(UNC) and 1586(UNF) tap series, taps with a nominal diameter of 1/4” are available in two or three flutes, and those with nominal diameters of 5/16” to 1/2” have three 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, press rather than cut to create threads in a drilled hole, and no chips are created. Pipe taps create threads in pipes and pipe fittings. Each thread type designates a thread profile and each type is identified with an abbreviation. In the U.S. and Canada, the Unified Thread Standard is the dominant thread type, including UNC (Unified Coarse), UNF (Unified Fine), and NPT (National Pipe Taper) threads, among others. Dormer Pramet manufactures cutting tools under the following brands: Precision Twist Drill, Dormer, Union Butterfield and Pramet. The company has locations around the world, and provides tools adhering to ANSI, NAS, and DIN standards.

Features & Highlights

  • Spiral flute tap design pulls chips back from the tip of the tool and out of the hole to prevent clogging
  • Spiral flutes for creating threads in blind holes
  • Available in UNC (Unified Coarse) or UNF (Unified Fine) right-hand thread options for different applications
  • Uncoated (bright) tools have no additional surface treatment or coating, suitable for general-purpose applications
  • Round shank with square end allows tap to be used in hand or power-driven applications

Additional Information

Brand:
Union Butterfield
Manufacturer:
Precision Dormer
Category:
Spiral Flute Taps
Model:
1010356
MPN:
15865/16X243FLNO2
UPC:
698464023897
Part Number:
15865/16X243FLNO2
Size:
5/16"-24 Thread Size
Publisher:
Precision Dormer
Binding:
Misc.
Item Weight:
0.01 pounds
Package Weight:
0.15 pounds
Package Size:
0.6 x 0.5 x 3.5 inches

 


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