Spiral Fluted Taps (for blind hole)Spiral Fluted Taps(for through hole)Spiral Pointed Taps(for through hole)Hand TapsCementedCarbide TapsRoll TapsSpecial Thread TapsSimple Inspection ToolsPipe TapsThread MillsPremium Thread MillsDiesCenter DrillsCentering Tools ⑥ Roll Tap Series Overall Thread Thread + Neck Shank Shank Size of Length oflengthlengthlengthlengthdia.squaresquareLℓℓnℓsDsKℓk ANSI HP-RZ High Performance Roll Taps, Coated ① Size Class Code Chamfer L (inch) ℓ(inch) ℓn(inch) ℓs(inch) Ds(inch) K(inch) ℓk(inch) Lobe TYPE5/16-24UNFH5386836M2P3.5430.7481.3781.8310.3180.2380.37563 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 ② 3/8-16UNC H5 386840M 2P 3.937 0.906 1.535 2.028 0.381 0.286 0.437 6 3 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 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 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 ⑤ 7/16-20UNF H7 386853M 2P 3.937 0.906 - 2.008 0.323 0.242 0.406 8 41/2-13UNCH5386858M4P4.3311.024-2.2050.3670.2750.43784 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 ⑥ 1/2-20UNF 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 ⑦ Unified thread : No.4 and smaller = non, No.5 〜 1/4 = 2, 5/16 〜 3/8 = 3, 7/16 and larger = 4For M6, 1/4 and smaller, external centers of 2P chamfer taps are removed. ⑧ ⑨ ⑩ ⑪ ANSI ⑥-53 ※ This product is different from JIS products in shape and dimensions, please be careful when using.