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All Categories > Heli-Coil > Taps & Gages > Tanged STI Taps > Spiral Pointed - Plug & Spiral Flute > Spiral Pointed - Plug (4 Thread Chamfer) > 2B Spiral Point Plug Unified Fine STI Taps > View Items  

2B Spiral Point Plug Unified Fine 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 - 11 of 11 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

02FSA 2(.086)-64 1-7/8 9/16 3/16 .141 .110
03FSA 3(.099)-56 1-15/16 5/8 3/16 .141 .110
04FSA 4(.112)-48 2 11/16 3/16 .141 .110
06FSA 6(.138)-40 2-1/8 3/4 1/4 .168 .131
2FSA 8(.164)-36 2-3/8 15/16 9/32 .220 .165
3FSA 10(.190)-32 2-1/2 1 5/16 .255 .191
4FSA 1/4(.2500)-28 2-23/32 1-1/8 3/8 .318 .238
5FSA 5/16(.3125)-24 2-15/16 1-1/4 7/16 .381 .286
6FSA 3/8(.3750)-24 3-5/321-7/16 1-7/16 13/32 .323 .242
7FSA 7/16(.4375)-20 3-3/8 1-21/32 7/16 .367 .275
8FSA 1/2(.5000)-20 3-19/32 1-21/32 1/2 .429 .322
  Results 1 - 11 of 11 1