⑦ Special Thread Taps / Simple Inspection Tools Overall length L ℓ Pin length Bored hole dia. Bored hole dia. Bored hole depth Bored hole depth Bored hole depth (GO) d1 (NOT-GO) d2 (1.5D) ℓ1 ℓ2 (2D) (2.5D) ℓ3 Shank dia. Ds JIS CPC-S Check Pins for Bored Hole in Thread Cut Tapping (Straight Type) L ℓ d1 d2 ℓ1 ℓ2 ℓ3 Ds MSRP Size Code TYPE Spiral Fluted Taps (for blind hole) (mm) (mm) (Thread engagement ratio) (Thread engagement ratio) (mm) (mm) (mm) (mm) ① 1/2-20UNF CPCSU08NC 121 33 11.463 (90%) 11.600 (80%) 19.1 25.4 31.8 12 1 ¥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 □ Spiral Fluted Taps (for through hole) 1/2-20UNF CPCSU08NM *5 piece set consists of CPCSU08NB ~ CPCSU08NF ¥22,500 □ ② 1/2-20UNF CPCSU08NS *5 piece set consists of CPCSU08NA ~ CPCSU08NE ¥22,500 □ Spiral Pointed Taps (for through hole) ③ Hand Taps ④ Cemented Carbide Taps ⑤ Roll Taps ⑥ Special Thread Taps Simple Inspection Tools ⑦ Pipe Taps ⑧ Thread Mills Premium Thread Mills ⑨ Dies ⑩ Center Drills Centering Tools ⑪ JIS ⑦-67 ※ = Specified Distribution Items. Made to order products. □=In stock at manufacturer.