The self-retaining bolts covered by this specification are primarily intended for use in shear applications at dynamic points in flight control linkages, engine control mechanisms, field controls, bell crank systems, and other dynamic joint assemblies or aircraft where the failure or omission of cotter pin or locking wire would affect safety of flight or endanger personnel. For procurement purposes, this is a critical application item.

This specification establishes the requirements for self-retaining, impedance type bolts procured under part numbers listed on drawings which refer to this specification. These drawings may carry notes which modify the requirements, in which case, only the non-modified portion of this specification applies.

Recommendations for improvements or corrections of this specification should be directed to: National Aerospace Standards Conmiittee, Aerospace Industries Association, 1250 Eye Street, N.W., Washington, D.C. 20005.