MIL-DTL-17902G(SH)
3.4.1.1 Marking information. The inlaid brands or continuous lay line shall include the following:
Specification number.......................................M 17902
a.
Hose type....................................................CC or NC
b.
Hose size.....................................................1½ or 2½
c.
Manufacturer s name or trade mark......................(as applicable)
d.
Quarter and year of manufacture..........................(for example, 4-87)
e.
3.4.2 Fittings. Each fitting assembly shall be stamped with the following information:
Specification number.......................................M 17902
a.
Fitting size...................................................1½ or 2½
b.
Manufacturer s name or trade mark......................(as applicable)
c.
Stamping shall be with low stress dies with the letter size not smaller than ⅛ inch in height. Stamping shall be
placed on the external sleeve.
3.5 Electrical continuity. There shall be no electrical continuity between the couplings and the control cable.
The resistance between the contact buttons at each end of the hose shall be not more than 40 ohms per 50-foot hose
assembly (see 4.5.10).
3.6 Low temperature flexibility. The tube and cover shall show no signs of cracking (see 4.5.6).
3.7 Sedimentation. The interior surface of the hose shall be free from particulate materials to the extent that the
weight of sediment contained in the flushing fluid from the tube shall be not more than 10 milligrams per liter
(see 4.5.7).
3.8 Flattening. CCA and CCH hoses are subjected to vacuum on shipboard configurations. Upon conclusion
of testing (see 4.5.11), the subject test hose shall not indicate signs of de-lamination, cracking, or any other form of
component deficiency, in terms of the interior (inside surface area) or exterior (outside surface area) of the subject
test hose.
3.9 Resistance to shipboard non-skid. The subject test hose shall not exhibit exterior surface area material
failure revealing reinforcement threads when subjected to a cyclic abrasion test, at a minimum of 2000 cycles,
against a test plate coated with non-skid material in accordance with MIL-PRF-24667.
3.10 Plugs and caps. After testing, each hose assembly shall be thoroughly dried. Plastic plugs and caps shall
be installed on the threaded end fittings to protect the threads. Bulk hose shall be thoroughly dried after testing and
shall have the ends protected with cloth or plastic backed self-adhesive tape.
3.11 Workmanship. Hoses and fittings shall be uniform in quality and material. Castings shall be free from
patching, misalignment resulting from shifted coring, warping, and porosity. Sprues shall be removed and the
casting shall be free from sand, dirt, and scale. Forgings shall be free from patching, warping, or other defects, and
from dirt and scale. Machined parts shall be manufactured to tolerances and dimensions specified herein. Metal
parts shall be free of sharp edges. Hose and hose assemblies shall be free of dirt, oil, and metal particles. Hose shall
exhibit no cracks or blisters.
4. VERIFICATION
4.1 Classification of inspections. The inspection requirements specified herein are classified as follows:
a.
First article inspection (see 4.2).
b.
Conformance inspection (see 4.3).
4.1.1 Inspection lot. Hose lengths with couplings of the same size with the same construction materials,
produced under essentially the same conditions, and offered for inspection at one time shall be considered a lot for
purposes of inspection.
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