
⑦ Special Thread Taps / Simple Inspection Tools Overall length L Thread length ℓ Shank length ℓs Shank dia. Ds Size of square K Length of square ℓk JIS HT MST Spiral Fluted Taps (for blind hole) ① JIS Hand Tap for Microscope Objective Lens Spiral Fluted Taps (for through hole) ② Specification ■Product Features ●Taps for Microscope Objective Lens ●The taps can be used for creating internal Spiral Pointed Taps (for through hole) screw threads with machining center or by ③ hand and rethreading as well. For through Recommended Tapping Speeds depending on Materials hole use. Brass ●For RMS-type Whitworth threads specified in 黄銅 JIS B 7141“Microscopes objective lens”. 〜 10 ●T his tap is also suitable for repair or Hand Taps ( m / min ) cleaning of internal threads. ④ TYPE:1 Cemented Carbide Taps ⑤ Segment:1A L ℓ ℓs Ds K ℓk No. of MSRP Size Code Chamfer TYPE Roll Taps (mm) (mm) (mm) (mm) (mm) (mm) flutes ⑥ For Microscope Objective Lens 20.32W36 TYRMS10LEB5 5P 87 16 44 18 14 17 4 1 ¥25,200 □ 20.32W36 TYRMS10LEBA 1.5P 87 16 44 18 14 17 4 1 ¥25,200 □ Special Thread Taps Simple Inspection Tools ■Internal thread specifications of threads for microscope The tap is used for internal ⑦ objective lens“RMS 20.32W360” unit:mm threads of a microscope Allowable Minor Diameter Pitch Diameter Minor Diameter Size Value (D) (D2) (D1) revolver as shown in the 20.32W36 Max. 20.396 19.944 19.550 picture. Min. 20.320 19.868 19.474 Pipe Taps ⑧ ■Chips(brass) Thread Mills Premium Thread Mills ⑨ Dies ⑩ ■ For Microscope Objective Lens unit:mm ■ Bored hole size unit: mm Major Pitch Diameter Minor Minor Diameter of Internal Thread(D1) Bored Hole Size Center Drills Centering Tools Diameter Diameter Size (Reference) ⑪ Upper Lower Max. Min. Size Class Basic Basic Tolerance Tolerance Basic 20.32W36 19.550 19.474 19.53 Size Size ( μ m) ( μ m) Size + + 20.32W36 - 20.320 19.868 38 23 19.416 JIS ⑦-41 ※ = Specified Distribution Items. Made to order products. □=In stock at manufacturer.