N-RZ Thread Forming Taps for Steels 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) RS012P-HEXP 4P M12 × 1.75 D11 4.331 1.024 - 2.205 0.367 0.275 0.437 8 4 RS012P-HEXB 2P RS012N9HEXP 4P M12 × 1.25 D9 4.331 1.024 - 2.205 0.367 0.275 0.437 8 4 (for through hole) Spiral Fluted Taps RS012N9HEXB 2P For Unified Threads No.0-80UNF H2 RSUN0B2HEXB 2P 1.772 0.236 - 1.161 0.141 0.11 0.187 3 1 No.1-64UNC H2 RSUN1D2HEXB 2P 1.772 0.275 - 1.161 0.141 0.11 0.187 3 1 No.1-72UNF H2 RSUN1C2HEXB 2P 1.772 0.275 - 1.161 0.141 0.11 0.187 3 1 (for through hole) Spiral Pointed Taps H2 RSUN2E2HEXB No.2-56UNC 2P 1.772 0.314 - 1.161 0.141 0.11 0.187 4 1 H3 RSUN2E3HEXB H2 RSUN2D2HEXB No.2-64UNF 2P 1.772 0.314 - 1.161 0.141 0.11 0.187 4 1 H3 RSUN2D3HEXB H2 RSUN3F2HEXB Hand Taps No.3-48UNC 2P 2.205 0.354 0.669 1.28 0.141 0.11 0.187 4 2 H3 RSUN3F3HEXB H2 RSUN3E2HEXB No.3-56UNF 2P 2.205 0.354 0.669 1.28 0.141 0.11 0.187 4 2 H3 RSUN3E3HEXB RSUN4H3HEXP 4P Carbide Taps Cemented H3 RSUN4H3HEXB 2P No.4-40UNC 2.205 0.354 0.709 1.28 0.141 0.11 0.187 4 2 RSUN4H5HEXP 4P H5 RSUN4H5HEXB 2P RSUN4F3HEXP 4P Roll Taps H3 RSUN4F3HEXB 2P No.4-48UNF 2.205 0.354 0.709 1.28 0.141 0.11 0.187 4 2 RSUN4F5HEXP 4P H5 RSUN4F5HEXB 2P RSUN5H3HEXP 4P H3 Simple Inspection Tools Pipe Taps RSUN5H3HEXB 2P No.5-40UNC 2.205 0.433 0.768 1.358 0.141 0.11 0.187 4 2 RSUN5H5HEXP 4P H5 RSUN5H5HEXB 2P RSUN5G3HEXP 4P H3 RSUN5G3HEXB 2P No.5-44UNF 2.205 0.433 0.768 1.358 0.141 0.11 0.187 4 2 RSUN5G5HEXP 4P H5 RSUN5G5HEXB 2P RSUN6J3HEXP 4P H3 RSUN6J3HEXB 2P Thread Mills No.6-32UNC 2.205 0.433 0.787 1.358 0.141 0.11 0.187 4 2 RSUN6J5HEXP 4P H5 RSUN6J5HEXB 2P RSUN6H3HEXP 4P H3 RSUN6H3HEXB 2P Dies No.6-40UNF 2.205 0.433 0.787 1.358 0.141 0.11 0.187 4 2 RSUN6H5HEXP 4P H5 RSUN6H5HEXB 2P RSUN8J3HEXP 4P H3 RSUN8J3HEXB 2P No.8-32UNC 2.48 0.512 0.827 1.535 0.168 0.131 0.25 4 2 Center Drills RSUN8J5HEXP 4P H5 RSUN8J5HEXB 2P RSUN8I3HEXP 4P H3 RSUN8I3HEXB 2P No.8-36UNF 2.48 0.512 0.827 1.535 0.168 0.131 0.25 4 2 RSUN8I5HEXP 4P Centering Tools H5 RSUN8I5HEXB 2P RSUNAM4HEXP 4P No.10-24UNC H4 2.756 0.551 0.984 1.654 0.194 0.152 0.25 4 2 RSUNAM4HEXB 2P ANSI RO-2 283