the sequence shown below a b 0 0 e f g ss 2 c d 1 2 rt ss 2 0 0 1 2 rt a ... material c series a b c20 hc inc m ny s ss t ti 625 825 aluminum ... swagelok tube fitting add f example ss-100f-1-1 f second end connection size add a size ... or if the fitting is a reducing union g second end connection type add a ... 2 32 32 38 38 50 50 male connector 90° male elbow tee union cross union 45° ... male elbow union female connector female elbow elbow ... union bulkhead male connector bulkhead union bulkhead female connector adapter cap ... reducer bulkhead reducer reducing elbow tee female run tee male run tee iso/bsp ... tees and 3 to 4 for crosses example ss-6m0-3-4ttf for a 316 ss female tee for 6 mm tube ...