MIL-S-81746A, MILITARY SPECIFICATION: SERVTORQ, GENERAL SPECIFICATION FOR (05 APR 1991)., This specification covers the general requirements for integrated servomechanized synchro receiver-servomotors (acronym SERVTORQ). It is not complete in itself, but must be used in conjunction with MIL-S-81963 which forms an inherent part of this specification.