Item Type: Adapter Fitting - Code 61 Flange Without O-Ring Groove X Weld Pipe
Nominal Size: 1 Code 61 Flange Without O-ring Groove X 1 Weld Pipe
Material: Plated Steel

CODE 61 FLANGE THREAD CHART - BOLT PATTERN (MEASURED BOLT CENTER TO BOLT CENTER) AND BOLT THREAD SIZES

4-Bolt Flange fittins, also known as split flange or full flange fittings are used for a large variety of applicaitons.  They are seen in suction, low pressure, and high pressure applicaitons.  The SAE standard (J518) fittings include Code 61 and Code 62 type fittings.  Though common on Caterpillar the CAT flange fitting is not an SAE recognized fitting.  Additionally, the Komatsu flange fitting, which one might call a Code 61 #10 fitting is not an SAE fitting either. Nominal Size Dash Size Short Side bolt spacing Long Side Bolt Spacing Standard Thread Metric Thread 1/2" - 8 .688" (17.47mm) 1.500" (38.1mm) 5/16" - 18 M8 X 1.25 3/4" - 12 .875" (22.23mm) 1.875" (47.63mm) 3/8" - 16 M10 X 1.5 1" - 16 1.031" (26.19mm) 2.062" (52.37mm) 3/8" - 16 M10 X 1.5 1-1/4" - 20 1.188" (30.18mm) 2.312" (58.72mm) 7/16" - 14 M10 X 1,5 1-1/2" - 24 1.406" (35.71mm) 2.750" (69.85mm) 1/2" - 13 M12 X 1.5 2" - 32 1.688" (42.88mm) 3.062" (77.77mm) 1/2" - 13 M12 X 1.5 2-1/2" - 40 2.000" (50.8mm) 3.500" (88.90mm) 1/2" - 13 M12 X 1.5 3" - 48 2.438" (61.93mm) 4.188" (106.38mm) 5/8" - 11 M16 X 2.0