nd TapO lverall ength LThread length T ℓhread+Neck length ℓnShank length ℓsShank dia. DsSize of square KLength of square ℓk
Size T STI HandClass Taps fCode or Helical CoChamfer il WireL (inch) Screwℓ (inch) Threℓn (inch) ad Inℓs (inch) sertsDs (inch)K (mm)ℓk (mm)No. of flutesType
STI 1/4-20UNCGH2 GH3TUU04N2NEB5 TUU04N2NEBA TUU04N3NEB5 TUU04N3NEBA5P 1.5P 5P 1.5P3.5430.7481.3781.8310.3180.2380.37532
STI 1/4-28UNFGH2 GH3TUU04K2NEB5 TUU04K2NEBA TUU04K3NEB5 TUU04K3NEBA5P 1.5P 5P 1.5P3.5430.7481.3781.8310.3180.2380.37532
STI 5/16-18UNCGH2 GH3TUU05O2NEB5 TUU05O2NEBA TUU05O3NEB5 TUU05O3NEBA5P 1.5P 5P 1.5P3.9370.9061.5352.0670.3810.2860.43742
STI 5/16-24UNFGH2 GH3TUU05M2NEB5 TUU05M2NEBA TUU05M3NEB5 TUU05M3NEBA5P 1.5P 5P 1.5P3.9370.9061.5352.0280.3810.2860.43742
STI 3/8-16UNCGH3 GH4TUU06P3NEB5 TUU06P3NEBA TUU06P4NEB5 TUU06P4NEBA5P 1.5P 5P 1.5P4.3311.024-2.2050.3670.2750.43743
STI 3/8-24UNFGH2 GH3TUU06M2NEB5 TUU06M2NEBA TUU06M3NEB5 TUU06M3NEBA5P 1.5P 5P 1.5P3.9370.906-2.0080.3230.2420.40643
STI 7/16-14UNCGH3 GH4TUU07Q3NEB5 TUU07Q3NEBA TUU07Q4NEB5 TUU07Q4NEBA5P 1.5P 5P 1.5P4.3311.024-2.2050.4290.3220.543
STI 7/16-20UNFGH3 GH4TUU07N3NEB5 TUU07N3NEBA TUU07N4NEB5 TUU07N4NEBA5P 1.5P 5P 1.5P4.3311.024-2.2050.4290.3220.543
STI 1/2-13UNCGH3 GH4TUU08R3NEB5 TUU08R3NEBA TUU08R4NEB5 TUU08R4NEBA5P 1.5P 5P 1.5P4.3311.024-2.2050.480.360.56243
STI 1/2-20UNFGH3 GH4TUU08N3NEB5 TUU08N3NEBA TUU08N4NEB5 TUU08N4NEBA5P 1.5P 5P 1.5P4.3311.024-2.2050.480.360.56243