The size is 2" x 2";
No other part numbers with same form, fit, and function found.
NSN 6145-00-087-7691
NSN 6150-01-375-6946
NSN 5920-01-335-9456
NSN 6220-00-009-6099
NSN 6320-01-090-8296
NSN 5945-01-303-7325
NSN 6130-00-199-4210
NSN 7035-01-386-5722
NSN 5965-00-007-7863
NSN 4140-01-255-5085
NSN 6320-01-183-8196
NSN 5998-01-537-9153