MIL-DTL-6458 Chain Assemblies, Single Leg, Aircraft Cargo Tie DownThis specification covers two types of flight safety critical aircraft cargo tie down chain assemblies. The chains described in this specification are to be used in conjunction with the tie down tensioners described in MIL-DTL-25959, where the Type I chain assembly is to be used with the Type I \(styles A and B\) and Type III tie down tensioners, and the Type II chain assembly is to be used with the Type II \(styles A and B\) and Type IV tie down tensioners.

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MIL-DTL-6458G

�2

R=K/2

�1

∅2

∅1

Type

50�

105�

2.266 1.047 0.844 1.359 0.650 2.250 1.031 0.359 2.657 0.515 0.375 0.188

75�

105�

3.425 1.368 1.368 1.968 1.102 3.780 1.673 0.590 3.661 0.866 0.610 0.305

Tolerances: A maximum; B, C, D, E, F, G and I approximate; H + 0.04/- 0 inch; J and K + 0.028/- 0.028; �1 and �2

approximate.

Figure 2. Grab hook dimensional requirements.

3.8 Finish. All steel parts with the exception of corrosion resistant steel shall be treated

with a metallic-type coating that will provide a cathodic protective coating to the base metal.

This protective coating shall not crack, peel, or flake during normal usage and shall withstand

any adverse conditions to which the chain assembly will be subjected in accordance with this

specification. The protective coating shall in no way prevent compliance with the performance

requirements of this specification.