MIL-PRF-11891F, PERFORMANCE SPECIFICATION: TRACK SHOE SETS, TRACK SHOE ASSEMBLIES, TRACK SHOE PADS AND TRACK SHOE BUSHINGS, VEHICULAR: ELASTOMERIZED (16 FEB 1996) [SUPERSEDING MIL-T-11891E] [S/S BY MIL-DTL-11891G]., This specification identifies the requirements for qualification and production control of track systems supporting U.S. Military Tracked Vehicles. This specification is intended primarily for the qualification of elastomeric compounds used in the fabrication of track and track components and to ensure that the quality and performance established at qualification is maintained throughout production. The contractor is held fully responsible for the entire assembly/component including all non-elastomeric components and fasteners.