MIL-DTL-8789F
TABLE I. Material.
Type of part
Material
Specification
SAE-AMS-S-6758 alloy
4130
SAE-AMS-QQ-A-225/6
Temper T6 or T851
SAE-AMS-6322
SAE-AMS-6325
SAE-AMS-6327
Nipples, nuts, and elbows 1/
Steel
SAE-AMS-6349 alloy
4140
SAE-AMS-6370 alloy
4130
SAE-AMS-6382 alloy
4140
SAE-AMS-QQ-A-225/9
Temper T73
SAE-AMS-QQ-A-367
alloy 7075 - T7351
SAE-AMS-4111 Temper
Socket, Bodies
Aluminum alloy
T73
SAE-AMS-4141 alloy
7075 - T73
SAE-AMS-4124 alloy
7075 - T7351
1/ The elbow may be fabricated from an alternate material using steel tubing
in accordance with SAE-AMS-5050 or SAE-AMS-5053.
3.4 Design and construction. The design and construction of the attachable end fitting shall conform
to MS28760, MS28761, MS28780, or MS28781 and this specification, as applicable. The end fitting shall
be suitable for use with hose qualified to MIL-DTL-8788 to form flexible assemblies, which shall meet all
the requirements of MIL-DTL-8790.
3.4.1 Fittings. Fitting ends shall be fabricated of materials listed in table I and as specified in the
applicable specification sheets.
3.4.2 Finish.
Aluminum alloy: Anodic treatment in accordance with MIL-A-8625, type II, class 2.
Steel: Cadmium plate in accordance with SAE-AMS-QQ-P-416, type II, class 3, color-black.
3.4.3 Surface roughness. Surface roughness of machined parts shall not exceed 125µ inches
(3.18µm) arithmetical average, except for the sealing of fittings which shall not have annular tool marks in
excess of 100 micro inches (2.54µm) arithmetical average. The arithmetical average values shall be
interpreted in accordance with ASME B46.1.
3.4.4 Dimensions. Dimensions and tolerances shall be as shown on the applicable specification
sheet. Dimensional requirements are applicable after heat treatment and protective finish.
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