Chamfered port size oD (Recommended value) Rc NPT, NPTF Nominal thread size . 10.2 13.6 17.1 21.4 . 10.4 13.8 17.3 21.6 G min max min max min max . 10.2 13.6 17.1 21.4 . 10.6 14.0 17.5 21.8 1/16 1/8 1/4 3/8 1/2 8.2 10.5 14.1 17.4 21.7 8.4 10.7 14.3 17.6 21.9 Caution 3. Proper tightening torque for a hexagon lock nut is shown in the table below. For standard installation, turn 15 to 30° using tool, after fastening by hand. Pay attention not to over torque the product. Check the dimensions for each product for the hexagonal width across flats. Proper tightening torque (N・m) 0.07 0.3 1 1.2 2 6 Note 3) Note 2) Note 3) Note 1) Note 1) Note 4) Note 5) Lock nut width across flats 5 7 10 12 14 17 Body size M3 M5 1 8 1 4 3 8 1 2 Note 1) 4.5 for AS12�ｭ1F-M3-02, AS12�ｭ1F-M5-02 and AS1200-M3. Note 2) 0.07 N・m for AS12�ｭ1F-M5-02, AS1�ｭ�ｭ1FM, AS12�ｭ0M and ASD230FM. Note 3) 2 N・m for AS22�ｭ1FE-01 and AS22�ｭ1FE-02. Note 4) 9 for AS2001F-�ｭ-3 and 12 for AS22�ｭ1FE-01. Note 5) 14 for AS22�ｭ1FE-02. Mounting Flow Control Equipment Precautions 2 Be sure to read this before handling. oD 45° 1. Tightening the threaded portion of the connection thread M3, M5, 10-32 UNF 1) M3 First, tighten it by hand, then give it an additional 1/4 turn with a wrench. A reference value for the tightening torque is 0.4 to 0.5 N・m. Note) AS12�ｭ1F-M3-02 should be given an approx. 1/6 turn after tightening by hand (reference value: 0.4 to 0.5 N・m). 2) M5 and 10-32UNF First, tighten it by hand, then give it an additional 1/6 turn to 1/4 turn with a wrench. A reference value for the tightening torque is 1 to 1.5 N・m. Note) Excessive tightening may damage the thread portion or deform the gasket and cause air leakage. If the screw is too shallowly screwed in, it may come loose or air may leak. 2. Chamfered female thread size of the connection thread M3, M5, 10-32UNF Confirming to ISO16030 (air pressure fluid dynamics . connection . boards and stud ends), the chamfered thread sizes shown below are recommended. Female thread size Chamfered port size oD (Recommended value) 3.1 to 3.4 5.1 to 5.4 5.0 to 5.3 M3 M5 10-32UNF Caution 1. First, tighten the threaded portion by hand, then use a proper wrench, which could be suitable for the width across flats of the hexagon body, to tighten it further at a wrench tightening angle shown below. As a reference value for the tightening torque, refer to the table below. 2. The gasket can be recycled up to 6 to 10 times. It can be replaced easily when it has sustained damage. A broken gasket can be removed by holding it and then turning it in the same direction as loosening the thread. If gasket is difficult to remove, cut it with nippers, etc. In such a case, use caution not to scratch the seat face because the seat face of 45° gasket of fitting is the sealing face. 3. Please consult with SMC if using for other fluids than air. 4. Other precautions on handling, etc. are the same as those for One-touch fittings. Chamfered area for female thread (Recommended value) By chamfering as shown in the following table, machining of threads is easier and effective for burr prevention. Mounting UNI Thread Type Proper tightening torque (N・m) Nominal size of UNI thread Approx. wrench tightening angle after tightened by hand deg 3 to 5 8 to 12 14 to 16 20 to 22 30 to 60 30 to 60 15 to 45 15 to 30 Proper tightening torque (N・m) Nominal size of UNI thread Approx. wrench tightening angle after tightened by hand deg 3 to 4 4 to 5 8 to 9 14 to 15 30 to 45 15 to 30 15 to 30 15 to 30 45° Rz12.5 1 8 1 4 3 8 1 2 1 8 1 4 3 8 1 2 Connection Female Thread: G oD Connection Female Thread: Rc, NPT, NPTF 49 A