Overall Thread Thread+Neck Shank Shank Size of Length of length length length length dia. square square L ℓ ℓn ℓs Ds K ℓk OL+RZ/OL-RZ Thread Forming Taps for Dry Tapping, Coated Size Class Code Chamfer L ℓ ℓn ℓs Ds K ℓk Lobe Type Stock (for blind hole) Spiral Fluted Taps (mm) (mm) (mm) (mm) (mm) (mm) (mm) G6 OLRZP65.0KP M5 × 0.8 4P 60 13 22 33 5.5 4.5 7 4 4 ○ G7 OLRZP75.0KP G6 OLRZP66.0MP M6 × 1 4P 62 15 26 33 6 4.5 7 4 4 ○ (for through hole) Spiral Fluted Taps G7 OLRZP76.0MP For Unified Threads Size Class Code Chamfer L ℓ ℓn ℓs Ds K ℓk Lobe Type Stock (mm) (mm) (mm) (mm) (mm) (mm) (mm) G4 OLRZM4UN2EP No.2-56UNC 4P 42 8.1 - 27 3 2.5 5 4 3 △ (for through hole) Spiral Pointed Taps G5 OLRZM5UN2EP No.2-64UNF G4 OLRZM4UN2DP 4P 42 8.1 - 27 3 2.5 5 4 3 △ No.3-48UNC G4 OLRZM4UN3FP 4P 46 8.1 14 29 3 2.5 5 4 4 △ No.3-56UNF G4 OLRZM4UN3EP 4P 46 8.1 14 29 3 2.5 5 4 4 △ G5 OLRZM5UN4HP Hand Taps No.4-40UNC 4P 46 9 14 26 4 3.2 6 4 4 ○ G6 OLRZM6UN4HP No.4-48UNF G5 OLRZM5UN4FP 4P 46 9 14 26 4 3.2 6 4 4 △ No.5-40UNC G5 OLRZM5UN5HP 4P 52 11 16 29 5 4 7 4 4 △ No.5-44UNF G5 OLRZM5UN5GP 4P 52 11 16 29 5 4 7 4 4 △ Carbide Taps Cemented G5 OLRZM5UN6JP △ No.6-32UNC 4P 52 11 16 29 5 4 7 4 4 G6 OLRZM6UN6JP ○ No.6-40UNF G5 OLRZM5UN6HP 4P 52 11 16 29 5 4 7 4 4 △ G6 OLRZM6UN8JP No.8-32UNC 4P 60 13 21 33 5.5 4.5 7 4 4 △ Roll Taps G7 OLRZM7UN8JP No.8-36UNF G6 OLRZM6UN8IP 4P 60 13 21 33 5.5 4.5 7 4 4 △ G6 OLRZM6UNAMP No.10-24UNC 4P 60 13 22 33 5.5 4.5 7 4 4 △ G7 OLRZM7UNAMP G6 OLRZM6UNAJP Simple Inspection Tools Special Thread Taps No.10-32UNF 4P 60 13 22 33 5.5 4.5 7 4 4 △ G7 OLRZM7UNAJP No.12-24UNC G6 OLRZM6UNCMP 4P 62 15 26 33 6 4.5 7 4 4 △ No.12-28UNF G6 OLRZM6UNCKP 4P 62 15 26 33 6 4.5 7 4 4 △ 1/4-20UNC G7 OLRZM7U04NP 4P 62 15 26 33 6 4.5 7 4 4 △ Pipe Taps 1/4-28UNF G7 OLRZM7U04KP 4P 62 15 26 33 6 4.5 7 4 4 △ Number of oil grooves : non Thread Mills Dies Center Drills Centering Tools JIS ◎=Standard ○=Semi standard △=Made to order RO-18 For improvement, spec may change without advance notice. 513