
⑥ Roll Tap Series Overall length L Thread length ℓ Thread + Neck length ℓn Shank length ℓs Shank dia. Ds Size of square K Length of square ℓk ANSI HP-RZ High Performance Roll Taps, Coated Size Class Code Chamfer L ℓ ℓn ℓs Ds K ℓk Lobe TYPE Spiral Fluted Taps (for blind hole) (inch) (inch) (inch) (inch) (inch) (inch) (inch) ① 5/16-24UNF H5 386836M 2P 3.543 0.748 1.378 1.831 0.318 0.238 0.375 6 3 5/16-24UNF H7 386839M 4P 3.543 0.748 1.378 1.831 0.318 0.238 0.375 6 3 5/16-24UNF H7 386837M 2P 3.543 0.748 1.378 1.831 0.318 0.238 0.375 6 3 3/8-16UNC H5 386842M 4P 3.937 0.906 1.535 2.028 0.381 0.286 0.437 6 3 Spiral Fluted Taps (for through hole) 3/8-16UNC H5 386840M 2P 3.937 0.906 1.535 2.028 0.381 0.286 0.437 6 3 ② 3/8-16UNC H7 386843M 4P 3.937 0.906 1.535 2.028 0.381 0.286 0.437 6 3 3/8-16UNC H7 386841M 2P 3.937 0.906 1.535 2.028 0.381 0.286 0.437 6 3 3/8-24UNF H5 386846M 4P 3.937 0.906 1.535 2.028 0.381 0.286 0.437 6 3 3/8-24UNF H5 386844M 2P 3.937 0.906 1.535 2.028 0.381 0.286 0.437 6 3 Spiral Pointed Taps (for through hole) ③ 3/8-24UNF H7 386847M 4P 3.937 0.906 1.535 2.028 0.381 0.286 0.437 6 3 3/8-24UNF H7 386845M 2P 3.937 0.906 1.535 2.028 0.381 0.286 0.437 6 3 7/16-14UNC H5 386850M 4P 3.937 0.906 - 2.008 0.323 0.242 0.406 8 4 7/16-14UNC H5 386848M 2P 3.937 0.906 - 2.008 0.323 0.242 0.406 8 4 7/16-14UNC Hand Taps H7 386851M 4P 3.937 0.906 - 2.008 0.323 0.242 0.406 8 4 ④ 7/16-14UNC H7 386849M 2P 3.937 0.906 - 2.008 0.323 0.242 0.406 8 4 7/16-20UNF H5 386854M 4P 3.937 0.906 - 2.008 0.323 0.242 0.406 8 4 7/16-20UNF H5 386852M 2P 3.937 0.906 - 2.008 0.323 0.242 0.406 8 4 7/16-20UNF H7 386855M 4P 3.937 0.906 - 2.008 0.323 0.242 0.406 8 4 Cemented Carbide Taps 7/16-20UNF H7 386853M 2P 3.937 0.906 - 2.008 0.323 0.242 0.406 8 4 ⑤ 1/2-13UNC H5 386858M 4P 4.331 1.024 - 2.205 0.367 0.275 0.437 8 4 1/2-13UNC H5 386856M 2P 4.331 1.024 - 2.205 0.367 0.275 0.437 8 4 1/2-13UNC H7 386859M 4P 4.331 1.024 - 2.205 0.367 0.275 0.437 8 4 1/2-13UNC H7 386857M 2P 4.331 1.024 - 2.205 0.367 0.275 0.437 8 4 Roll Taps 1/2-20UNF ⑥ H5 386862M 4P 4.331 1.024 - 2.205 0.367 0.275 0.437 8 4 1/2-20UNF H5 386860M 2P 4.331 1.024 - 2.205 0.367 0.275 0.437 8 4 1/2-20UNF H7 386863M 4P 4.331 1.024 - 2.205 0.367 0.275 0.437 8 4 1/2-20UNF H7 386861M 2P 4.331 1.024 - 2.205 0.367 0.275 0.437 8 4 Number of oil grooves : Metric thread : M3 〜 M7 = 2, M8 = 3, M10 and larger = 4 Special Thread Taps Simple Inspection Tools Unified thread : No.4 and smaller = non, No.5 〜 1/4 = 2, 5/16 〜 3/8 = 3, 7/16 and larger = 4 ⑦ For M6, 1/4 and smaller, external centers of 2P chamfer taps are removed. Pipe Taps ⑧ Thread Mills Premium Thread Mills ⑨ Dies ⑩ Center Drills Centering Tools ⑪ ANSI ⑥-53 ※ This product is different from JIS products in shape and dimensions, please be careful when using.