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|  MIL-T-62531(AT)
APPENDIX A
Rationale
Tiedowns are hardware item mounted on all military vehicles for the purpose of providing a
means of attaching lashings, chains, cables, or other retaining devices to the vehicle. They are
required for securing the vehicle retaining devices to the vehicle. They are required for securing
the vehicle on board carriers during vehicle shipment by road, rail, water, or air; they are
required for securing cargo to the vehicle; and they are required for securing canvas protective
covers over the cargo holds of open vehicles.
Varification Rationale
Tiedown hardware is generally in the form of lugs, rings, eyes, shackles, and cleats. A
minimum of four points should be provided for securing a vehicle on board a carrier. These
must be positioned to keep the vehicles stable against vertical loads as well as loads in the
longitudinal and lateral directions.
3.17 Certification. The supplier and his component sub-suppliers shall certify that the
vehicle conforms to the requirements of MIL-STD-1180.
Rationale
Although vehicles and equipment manufactured for, and sold directly to the Armed Forces of
the United States in conformity with contractural specifications, are specifically exempted from
the provisions of the Federal Motor Vehicle Safety Standards (FMVSS), it is the established
policy of the Army to comply with the intent of those standards as long as compliance does not
degrade essential military characteristics. With the same limitation, compliance with applicable
provisions of Federal Motor Carrier Safety Regulations (FMSCR) is an Army requirement.
MIL-STD-1180 provides guidance to assure that proper safety characteristics associated with
FMVSS are designed into military vehicles in a consistent manner.
Guidance
It is the contractual responsibility of the supplier, where certification of a component is
specified, to provide products that comply with the applicable safety standards requirements
cited in MIL-STD-1180. A certification does not necessarily guarantee acceptability of
components delivered under a contract. The user is responsible to ascertain periodically by
inspection and test the validity of a certification. Any known or suspected nonconformance
should be promptly reported to the contracting officer. Use only those parts and assemblies that
comply with the applicable safety standards.
Lessons Learned
Use of nonconforming components may result in premature failure and would jeopardize
successful completion of the mission or pose a significant risk to life or property.
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