⑦ Special Thread Taps / Simple Inspection Tools Overall length L Thread length ℓ Thread + Neck ℓn length Shank length ℓs Shank dia. Ds Size of square K Length of square ℓk ANSI HT STI Hand Taps for Helical Coil Wire Screw Thread Inserts L ℓ ℓn ℓs Ds K ℓk No. of TYPE Size Class Code Chamfer Spiral Fluted Taps (for blind hole) (inch) (inch) (inch) (inch) (inch) (inch) (inch) flutes ① No.10-24UNC GH2 TUUNAM2NEB5 5P 3.15 0.591 1.181 1.713 0.255 0.191 0.312 3 1 No.10-24UNC GH2 TUUNAM2NEBA 1.5P 3.15 0.591 1.181 1.713 0.255 0.191 0.312 3 1 No.10-24UNC GH3 TUUNAM3NEB5 5P 3.15 0.591 1.181 1.713 0.255 0.191 0.312 3 1 No.10-24UNC GH3 TUUNAM3NEBA 1.5P 3.15 0.591 1.181 1.713 0.255 0.191 0.312 3 1 Spiral Fluted Taps (for through hole) No.10-32UNF GH2 TUUNAJ2NEB5 5P 3.15 0.591 1.181 1.713 0.255 0.191 0.312 3 1 ② No.10-32UNF GH2 TUUNAJ2NEBA 1.5P 3.15 0.591 1.181 1.713 0.255 0.191 0.312 3 1 No.10-32UNF GH3 TUUNAJ3NEB5 5P 3.15 0.591 1.181 1.713 0.255 0.191 0.312 3 1 No.10-32UNF GH3 TUUNAJ3NEBA 1.5P 3.15 0.591 1.181 1.713 0.255 0.191 0.312 3 1 1/4-20UNC GH2 TUU04N2NEB5 5P 3.543 0.748 1.378 1.831 0.318 0.238 0.375 3 2 Spiral Pointed Taps (for through hole) ③ 1/4-20UNC GH2 TUU04N2NEBA 1.5P 3.543 0.748 1.378 1.831 0.318 0.238 0.375 3 2 1/4-20UNC GH3 TUU04N3NEB5 5P 3.543 0.748 1.378 1.831 0.318 0.238 0.375 3 2 1/4-20UNC GH3 TUU04N3NEBA 1.5P 3.543 0.748 1.378 1.831 0.318 0.238 0.375 3 2 1/4-28UNF GH2 TUU04K2NEB5 5P 3.543 0.748 1.378 1.831 0.318 0.238 0.375 3 2 1/4-28UNF GH2 TUU04K2NEBA 1.5P 3.543 0.748 1.378 1.831 0.318 0.238 0.375 3 2 Hand Taps ④ 1/4-28UNF GH3 TUU04K3NEB5 5P 3.543 0.748 1.378 1.831 0.318 0.238 0.375 3 2 1/4-28UNF GH3 TUU04K3NEBA 1.5P 3.543 0.748 1.378 1.831 0.318 0.238 0.375 3 2 5/16-18UNC GH2 TUU05O2NEB5 5P 3.937 0.906 1.535 2.067 0.381 0.286 0.437 4 2 5/16-18UNC GH2 TUU05O2NEBA 1.5P 3.937 0.906 1.535 2.067 0.381 0.286 0.437 4 2 Cemented Carbide Taps 5/16-18UNC GH3 TUU05O3NEB5 5P 3.937 0.906 1.535 2.067 0.381 0.286 0.437 4 2 ⑤ 5/16-18UNC GH3 TUU05O3NEBA 1.5P 3.937 0.906 1.535 2.067 0.381 0.286 0.437 4 2 5/16-24UNF GH2 TUU05M2NEB5 5P 3.937 0.906 1.535 2.028 0.381 0.286 0.437 4 2 5/16-24UNF GH2 TUU05M2NEBA 1.5P 3.937 0.906 1.535 2.028 0.381 0.286 0.437 4 2 5/16-24UNF GH3 TUU05M3NEB5 5P 3.937 0.906 1.535 2.028 0.381 0.286 0.437 4 2 Roll Taps 5/16-24UNF GH3 TUU05M3NEBA 1.5P 3.937 0.906 1.535 2.028 0.381 0.286 0.437 4 2 ⑥ 3/8-16UNC GH3 TUU06P3NEB5 5P 4.331 1.024 - 2.205 0.367 0.275 0.437 4 3 3/8-16UNC GH3 TUU06P3NEBA 1.5P 4.331 1.024 - 2.205 0.367 0.275 0.437 4 3 3/8-16UNC GH4 TUU06P4NEB5 5P 4.331 1.024 - 2.205 0.367 0.275 0.437 4 3 3/8-16UNC GH4 TUU06P4NEBA 1.5P 4.331 1.024 - 2.205 0.367 0.275 0.437 4 3 Special Thread Taps Simple Inspection Tools ⑦ 3/8-24UNF GH2 TUU06M2NEB5 5P 3.937 0.906 - 2.008 0.323 0.242 0.406 4 3 3/8-24UNF GH2 TUU06M2NEBA 1.5P 3.937 0.906 - 2.008 0.323 0.242 0.406 4 3 3/8-24UNF GH3 TUU06M3NEB5 5P 3.937 0.906 - 2.008 0.323 0.242 0.406 4 3 3/8-24UNF GH3 TUU06M3NEBA 1.5P 3.937 0.906 - 2.008 0.323 0.242 0.406 4 3 Pipe Taps 7/16-14UNC GH3 TUU07Q3NEB5 5P 4.331 1.024 - 2.205 0.429 0.322 0.5 4 3 ⑧ 7/16-14UNC GH3 TUU07Q3NEBA 1.5P 4.331 1.024 - 2.205 0.429 0.322 0.5 4 3 7/16-14UNC GH4 TUU07Q4NEB5 5P 4.331 1.024 - 2.205 0.429 0.322 0.5 4 3 7/16-14UNC GH4 TUU07Q4NEBA 1.5P 4.331 1.024 - 2.205 0.429 0.322 0.5 4 3 7/16-20UNF GH3 TUU07N3NEB5 5P 4.331 1.024 - 2.205 0.429 0.322 0.5 4 3 Thread Mills Premium Thread Mills 7/16-20UNF GH3 TUU07N3NEBA 1.5P 4.331 1.024 - 2.205 0.429 0.322 0.5 4 3 ⑨ 7/16-20UNF GH4 TUU07N4NEB5 5P 4.331 1.024 - 2.205 0.429 0.322 0.5 4 3 7/16-20UNF GH4 TUU07N4NEBA 1.5P 4.331 1.024 - 2.205 0.429 0.322 0.5 4 3 1/2-13UNC GH3 TUU08R3NEB5 5P 4.331 1.024 - 2.205 0.48 0.36 0.562 4 3 1/2-13UNC GH3 TUU08R3NEBA 1.5P 4.331 1.024 - 2.205 0.48 0.36 0.562 4 3 Dies ⑩ 1/2-13UNC GH4 TUU08R4NEB5 5P 4.331 1.024 - 2.205 0.48 0.36 0.562 4 3 1/2-13UNC GH4 TUU08R4NEBA 1.5P 4.331 1.024 - 2.205 0.48 0.36 0.562 4 3 1/2-20UNF GH3 TUU08N3NEB5 5P 4.331 1.024 - 2.205 0.48 0.36 0.562 4 3 1/2-20UNF GH3 TUU08N3NEBA 1.5P 4.331 1.024 - 2.205 0.48 0.36 0.562 4 3 1/2-20UNF GH4 TUU08N4NEB5 5P 4.331 1.024 - 2.205 0.48 0.36 0.562 4 3 Center Drills Centering Tools ⑪ 1/2-20UNF GH4 TUU08N4NEBA 1.5P 4.331 1.024 - 2.205 0.48 0.36 0.562 4 3 ANSI ⑦-7 ※ This product is different from JIS products in shape and dimensions, please be careful when using.