The objective of this work was to develop a relatively simple screening or bench test, or a combination of such tests, which would evaluate aircraft greases in respect to corrosion protection under the operating conditions described above.
The specification covers the requirements for locked-in studs. The method of locking in the stud is by means of a serrated collar and an accessory lockring with matching serrations installed within the parent material to prevent rotation.
This standard covers helical coil locking screw thread inserts made from formed wire in which the inner surface of the coil, after assembly, provides threads of standard Unified 60° form as specified on the assembly drawing. This standard also covers the performance requirements of the locking feature of the insert which will retain Unified (UN) or MIL-S-8879 (UNJ) external threaded parts.