
                                                                                Nominal Diameter | 
                                                                        N/A 1/2 in | 
                                                                                D - Tube O.D. | 
                                                                        N/A 21.7 mm | 
                                                                                Thread Type | 
                                                                        N/A JIS B 0203 (PT), ISO 7/1 | 
                                                                                T | 
                                                                        N/A 3/4 | 
                                                                                E | 
                                                                        N/A 18.0 mm | 
                                                                                E1 | 
                                                                        N/A 16 mm | 
                                                                                a - Basic Gauge Length | 
                                                                        N/A 9.5 mm | 
                                                                                h - Width Across Flat | 
                                                                        N/A 32.0 mm | 
                                                                                H - Width Across Flat | 
                                                                        N/A 36.0 mm | 
                                                                                i | 
                                                                        N/A 9.0 mm | 
                                                                                l | 
                                                                        N/A 34.0 mm | 
                                                                                Approx L | 
                                                                        N/A 46.5 mm | 
                                                                                Approx L1 | 
                                                                        N/A 32.5 mm |