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Union Butterfield TN1585(UNC) High-Speed Steel Spiral Point Tap, TiN Coated, Round With Square End, Plug Chamfer, 2 Flute, 1/4"-20 Thread Size


On Sale Now! Save 5% on the Union Butterfield TN1585(UNC) High-Speed Steel Spiral Point Tap, TiN Coated, Round With Square End, Plug Chamfer, 2 Flute, 1/4''-20 Thread Size by Union Butterfield at In The National Interest. MPN: TN15851/4-20H32FL. Hurry! Limited time offer. Offer valid only while supplies last. The Union Butterfield TN1585(UNC)/TN1585(UNF) high-speed steel spiral point tap has a relieved-style design, straight flutes with a plug chamfer,


Product Description

The Union Butterfield TN1585(UNC)/TN1585(UNF) high-speed steel spiral point tap has a relieved-style design, straight flutes with a plug chamfer, titanium nitride (TiN) coating, 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 two different ANSI thread specification standards: UNC (Unified Coarse) and UNF (Unified Fine). The spiral point of this tap (sometimes referred to as a “gun tap”) pushes chips ahead of the tool and the straight flutes reduce clogging. Both characteristics make it suitable for threading through holes (extending through the workpiece). Titanium nitride (TiN) is a gold-colored ceramic coating that combines hardness with low friction for extended cutting tool life and permits faster cutting speeds than with uncoated tools. Relieved-style tap design reduces the friction between tap and workpiece for reduced tool wear. A plug chamfer distributes cutting to ease tapping at the beginning of the hole and to maintain correct perpendicular alignment with the workpiece.

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. 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 TN1585(UNC) tap series, taps with nominal diameters of ¼“ and 5/16” are available with two or three flutes and those with diameters of 3/8” to ½” have three flutes. In the TN1585(UNF) series, taps with nominal diameters of ¼” and 5/16” have two flutes and those with diameters of 3/8” to ½” have three flutes. All taps in these series have plug chamfers. This tap conforms to ANSI standards and can create threads to a depth 2 ½ times its diameter. TN1585(UNC) taps 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 used for greater resistance to stripping, as in aerospace applications. TN 1585(UNF) taps are suitable for the ANSI 3B tolerance class.

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 point tap pushes chips ahead of tool to reduce clogging
  • Spiral point and straight flutes for cutting threads in through holes
  • Titanium nitride (TiN) coating combines hardness with low friction for extended tool life and faster cutting
  • Relieved-style design reduces friction between tap and workpiece for reduced tool wear
  • Plug chamfer for easier starting and correct perpendicular alignment

Additional Information

Manufacturer:Precision Dormer
Brand:Union Butterfield
Model:1060292
Part Number:TN15851/4-20H32FL
Publisher:Precision Dormer
Studio:Precision Dormer
MPN:TN15851/4-20H32FL
UPC:698464004742
EAN:0698464004742
Package Weight:0.03 pounds
Package Size:0.51 x 0.51 x 0.51 inches

Union Butterfield TN1585(UNC) High-Speed Steel Spiral Point Tap, TiN Coated, Round With Square End, Plug Chamfer, 2 Flute, 1/4''-20 Thread Size by Union Butterfield

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Union Butterfield TN1585(UNC) High-Speed Steel Spiral Point Tap, TiN Coated, Round With Square End, Plug Chamfer, 2 Flute, 1/4"-20 Thread Size

Brand: Union Butterfield
Condition: New
Lead Time: 1 - 2 Business Days
Availability: In Stock
$17.60
$16.78
You Save: 5%


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