Overall Thread Thread+Neck Shank Shank Size of Length of length length length length dia. square square L ℓ ℓn ℓs Ds K ℓk HP-RZ High Performance Thread Forming Taps, Coated Size Class Code Chamfer L ℓ ℓn ℓs Ds K ℓk Lobe Type (for blind hole) Spiral Fluted Taps (inch) (inch) (inch) (inch) (inch) (inch) (inch) RSU06P7FPTP 4P 3/8-16UNC H7 3.937 0.906 1.535 2.028 0.381 0.286 0.437 6 3 RSU06P7FPTB 2P RSU06M5FPTP 4P H5 (for through hole) Spiral Fluted Taps RSU06M5FPTB 2P 3/8-24UNF 3.937 0.906 1.535 2.028 0.381 0.286 0.437 6 3 RSU06M7FPTP 4P H7 RSU06M7FPTB 2P RSU07Q5FPTP 4P H5 RSU07Q5FPTB 2P (for through hole) Spiral Pointed Taps 7/16-14UNC 3.937 0.906 - 2.008 0.323 0.242 0.406 8 4 RSU07Q7FPTP 4P H7 RSU07Q7FPTB 2P RSU07N5FPTP 4P H5 RSU07N5FPTB 2P 7/16-20UNF 3.937 0.906 - 2.008 0.323 0.242 0.406 8 4 Hand Taps RSU07N7FPTP 4P H7 RSU07N7FPTB 2P RSU08R5FPTP 4P H5 RSU08R5FPTB 2P 1/2-13UNC 4.331 1.024 - 2.205 0.367 0.275 0.437 8 4 Carbide Taps Cemented RSU08R7FPTP 4P H7 RSU08R7FPTB 2P RSU08N5FPTP 4P H5 RSU08N5FPTB 2P 1/2-20UNF 4.331 1.024 - 2.205 0.367 0.275 0.437 8 4 RSU08N7FPTP 4P Roll Taps H7 RSU08N7FPTB 2P Simple Inspection Tools Pipe Taps Thread Mills Dies Center Drills Centering Tools ANSI RO-12 293