No. 9 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 5998-01-229-7092
NSN 5925-00-920-7066
NSN 6110-00-043-5347
NSN 5905-00-647-4554
NSN 5975-00-024-9887
NSN 6135-01-154-3526
NSN 7035-00-150-2379
NSN 6130-00-019-8996
NSN 6220-01-106-3215
NSN 6240-01-135-8715
NSN 5945-01-064-3226
NSN 5935-01-336-7764