MIL-DTL-28693A
3.7 Branding and marking.
3.7.1 Hose branding. Each length of hose shall be branded in letters at least ¼-inch high inlaid in
the cover and vulcanized thereto about 5 feet from each end. The branding shall include the following:
a.
Supplier's name and/or trademark.
b.
Month and year of manufacture.
c.
Oil, gasoline, longitudinally reinforced, 150 psi.
d.
NSN 4720-LL-LCA-0057.
3.7.2 Hose striping. Each length of hose shall be marked with longitudinal white or red stripes along
its entire length to show the natural relaxed position of the hose. The stripes shall be a white or red
compound securely vulcanized to the outer cover of the hose. The stripes shall be spaced 180º apart
around the circumference of the hose and run the entire length of the hose. If the longitudinal
reinforcement of the hose consists of two synthetic fiber straps, the stripes shall be placed over the
straps to indicate their location in the hose.
3.8 Workmanship.
3.8.1 Hose. The hose shall exhibit no blisters or other evidence of disruption on its interior and
exterior surfaces after the air pressure test specified in 4.7.5.
3.8.2 Castings. All castings shall be sound and free from patching, misplaced coring, warping, or
any other defect, which reduces the capability of the casting to perform its intended function.
3.9 Cleanliness. All hose assemblies shall be free from oil, grease, dirt, moisture, cleaning solvents
and other foreign material, both internally and externally.
3.10 Interchangeability. All units of the same classification furnished with similar options under a
specific contract shall be identical to the extent necessary to ensure interchangeability of component
parts, assemblies, accessories, and spare parts.
3.11 Age limits. The age of the hose shall not exceed the age limits specified in SAE-AS1933.
4. VERIFICATION
4.1 Classification of inspection. The inspection requirements specified herein are classified as
follows:
a. First article inspection (see 4.5).
b. Conformance inspection (see 4.6).
4.2 Inspection conditions. Unless otherwise specified, all inspections shall be performed in
accordance with the test conditions specified in the applicable test method referenced in the test
procedures.
4.3 Test equipment and inspection facilities. Test and measuring equipment and inspection
facilities of sufficient accuracy, quality and quantity to permit performance of the required inspection shall
be used.
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