Special Thread Taps / Simple Inspection Tools Overall length L Thread length ℓ Position on basic dia. ℓg Shank dia. Ds Size of square K Length of square ℓk ⑦ JIS RLS-HT Spiral Fluted Taps (for blind hole) ① JIS Hand Taps for Camera Release Threads Spiral Fluted Taps (for through hole) ② Specification ■Tap for the screws for installing camera release. Spiral Pointed Taps (for through hole) ③ Recommended Tapping Speeds depending on Materials Brass Brass castings 黄銅 黄銅鋳物 〜 1 〜 1 Hand Taps ( m / min ) ( m / min ) ④ TYPE:1 Cemented Carbide Taps ⑤ Segment:1A Roll Taps L ℓ ℓg Ds K ℓk No. of ⑥ Size Code Chamfer TYPE MSRP (mm) (mm) (mm) (mm) (mm) (mm) flutes For Camera Release Threads 3.4 × 0.5 × 28゚ TY3.4G0LEB - 52 5.25 4.15 4 3 7 3 1 ¥8,540 ※ Special Thread Taps Simple Inspection Tools ■ Bored hole size ⑦ 2.1〜 3.1 0 〜 0.8 φ1.6 B13( +0.28/+0.14) Pipe Taps ⑧ 28° 2.91〜3.3 Thread Mills Premium Thread Mills ⑨ Position of gauge plane Dies ⑩ Center Drills Centering Tools ⑪ JIS ※ = Specified Distribution Items. Made to order products. ⑦-32