Company item name--test block, servo valve
No other part numbers with same form, fit, and function found.
NSN 5996-01-434-7417
NSN 6685-01-595-6905
NSN 4140-01-361-9198
NSN 6645-00-640-9870
NSN 5920-01-063-4368
NSN 5835-00-368-4182
NSN 5998-01-386-1769
NSN 5855-01-354-7291
NSN 2925-00-172-9264
NSN 5985-01-399-8739
NSN 5835-01-152-9483
NSN 5895-01-041-5313