Testing of Locally-Fabricated Tiedown Fittings
ARMY DEFENSE AMMUNITION CENTER AND SCHOOL SAVANNA IL
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During the Ammunition Hotwash Conference, 26 March 1991, held at Ramstem Air Base, GE, it was pointed out that the Mickey Mouse and Bigfoot tiedown fittings were neither affordable nor available for transportation companies. These fittings are used to tiedown loads on M871 and M872 trailers with web straps. As result, the transportation companies resorted to fabricating their own fittings. ASa result of the field expedient locally-fabricated tiedown fittings collected from Southwest Asia SWA support, the U.S. Army Defense Ammunition Center and School USDADCS, Transportation Engineering Division SMCA-DET, requested the USADACS,Validation Engineering Division SMCAC-DEV, test, measure and draw each type of fitting. Each fitting was pull tested to determine its maximum working strength. Based on MIL-STD-209H, Military Standard Slinging and Tiedown Provisions for Lifting and Tying Down Military Equipment, these fittings are class 4 and must hold a 10,000-pound load without deformation or breakage. As a result of testing, all tiedown fixtures either broke or were deformed before reaching the 10,000-pound pull requirement.
- Couplers, Fasteners and Joints