No. 22 spline size
An item having an internal drive at one end made to fit into the external drive end of a socket wrench handle, torque wrench, or power driven tool. The opposite end consists of various internal wrench shapes such as hexagon or square. It may include an integral universal joint.
Classification: Socket wrenches with or without handles, drives and extensions, parts, base metal
NSN 5999-01-100-0768
NSN 5975-01-539-0929
NSN 6620-01-412-0938
NSN 5935-01-440-9105
NSN 4140-01-518-1390
NSN 6150-01-618-5145
NSN 6150-01-615-8965
NSN 6220-01-318-4996
NSN 5930-01-092-9640
NSN 5920-00-775-7994
NSN 6320-00-242-3300
NSN 5999-01-542-6446