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All Categories > Heli-Coil > Taps & Gages > Tanged STI Taps > Spiral Pointed - Plug & Spiral Flute > High Spiral Flute - Bottoming (2 Thread Chamfer) > 3B High Spiral Flute Bottoming Unified Coarse STI Taps > View Items  

3B High Spiral Flute Bottoming Unified Coarse STI Taps

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Straight Flute Taps. Widely used for general hand and machine tapping operations. Available in sizes up to 1-1/2".
  • Plug Style-(4 Thread Chamfer). Used in thru holes and blind holes that allow for ample chip clearance. Easier to start and require less tapping torque than bottoming taps.
  • Bottoming Style - (2 Thread Chamfer). Used in blind holes drilled to a minimum depth that requires threads be close to the bottom of the hole.


Spiral Pointed- Plug & Spiral Flute. Used for efficient chip disposal in production tapping operations. Available in sizes upto 1/2".
  • Spiral Pointed - Plug (4 Thread Chamfer).Widely used in long thru holes and blind holes with ample chip clearance. Incorporates an angular grind at the point end of the tap which shears chips and drives them forward of the tap. They are free cutting and provide increased tap strength. Not recommended for abrasive materials.




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  Results 1 - 14 of 14 1 

Item #

Nominal Thread Size

Tap Dimensions Length Overall A

Tap Dimensions Length of Thread B

Tap Dimensions Length of Square C

Tap Dimensions Maximum Diameter of Shank D

Tap Dimensions Maximum Size of Square

5905-01 1(.073)-64 1-13/16 in 1/2 in 3/16 in .141 in .110 in
5905-02 2(.086)-56 1-7/8 in 9/16 in 3/16 in .141 in .110 in
5905-03 3(.099)-48 1-15/16 in 5/8 in 3/16 in .141 in .110 in
5905-04 4(.112)-40 2 in 11/16 in 3/16 in .141 in .110 in
5905-05 5(.125)-40 2-1/8 in 3/4 in 1/4 in .168 in .131 in
5905-06 6(.138)-32 2-3/8 in 7/8 in 1/4 in .168 in .131 in
5905-2 8(.164)-32 2-3/8 in 15/16 in 9/32 in .220 in .165 in
5905-3 10(.190)-24 2-1/2 in 1 in 5/16 in .255 in .191 in
5905-1 12(.216)-24 2-23/32 in 1-1/8 in 3/8 in .318 in .238 in
5905-4 1/4(.2500)-20 2-23/32 in 1-1/8 in 3/8 in .318 in .238 in
5905-5 5/16(.3125)-18 2-15/16 in 1-1/4 in 7/16 in .381 in .286 in
5905-6 3/8(.3750)-16 3-3/8 in 1-21/32 in 1/16 in .367 in .275 in
5905-7 7/16(.4375)-14 3-19/32 in 1-21/32 in 1/2 in .429 in .322 in
5905-8 1/2(.5000)-13 3-13/16 in 1-13/16 in 9/16 in .480 in .360 in
  Results 1 - 14 of 14 1