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 ⑦ Special Thread Taps / Simple Inspection Tools Overall Pin Bored hole dia. Bored hole dia. Bored hole depth Bored hole depth Bored hole depth Shanklengthlength(GO)(NOT-GO)(1.5D)(2D)(2.5D)dia.Lℓd1d2ℓ1ℓ2ℓ3Ds JIS CPC-S Check Pins for Bored Hole in Thread Cut Tapping (Straight Type) ① Size Code L (mm) ℓ d1 d2 ℓ1(mm)(Thread engagement ratio)(Thread engagement ratio)(mm)ℓ2(mm)ℓ3(mm)Ds(mm)TYPEMSRP1/2-20UNFCPCSU08NC1213311.463 (90%)11.600 (80%)19.125.431.8121¥4,500 □ 1/2-20UNF CPCSU08ND 121 33 11.531 (85%) 11.669 (75%) 19.1 25.4 31.8 12 1 ¥4,500 □ 1/2-20UNF CPCSU08NE 121 33 11.600 (80%) 11.738 (70%) 19.1 25.4 31.8 12 1 ¥4,500 □ 1/2-20UNF CPCSU08NF 121 33 11.669 (75%) 11.806 (65%) 19.1 25.4 31.8 12 1 ¥4,500 □ ② 1/2-20UNF CPCSU08NM *5 piece set consists of CPCSU08NB ~ CPCSU08NF ¥22,500 □ 1/2-20UNF CPCSU08NS *5 piece set consists of CPCSU08NA ~ CPCSU08NE ¥22,500 □ ③ ④ ⑤ ⑥ ⑦ ⑧ ⑨ ⑩ ⑪ JIS ⑦-67 ※ = Specified Distribution Items. Made to order products. □=In stock at manufacturer.