No. 7 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 6240-00-185-8367
NSN 5999-00-621-9147
NSN 5925-01-054-3783
NSN 6650-01-272-3727
NSN 5998-00-144-4404
NSN 5930-01-555-5488
NSN 5960-01-263-6781
NSN 5905-00-958-8638
NSN 5998-00-013-6913
NSN 5965-00-378-3403
NSN 5930-01-445-3263
NSN 6145-01-025-2296