MIL-DTL-13444H
3.5.2 Hose reinforcement.
3.5.2.1 Type I hose. Reinforcement of type I hose shall consist of a single braid of cotton, polyester,
or other nonmetallic reinforcing material or plies of woven fabric of such strength as to meet the
requirements of this specification.
3.5.2.2 Type III hose. Reinforcement of type III hose shall consist of an inner ply of fabric braid and
an outer ply of single wire braid of such combined strength as to meet the requirements of this
specification.
3.5.3 Inner tube. The inner tube shall be fabricated from synthetic oil resistant rubber polymer.
3.5.4 Hose assemblies. Hose assemblies shall consist of hose with fittings assembled on each end in
accordance with MS52103 or MS52104.
3.5.5 Hose assembly fittings. Unless otherwise specified on the applicable drawing, one fitting in
each hose assembly shall be of the male type and one of the female type. The female type shall
incorporate a swivel. Hose type, dimensions, and materials of fittings shall conform to the applicable
specification sheet (see 3.1).
3.5.5.1 Steel fittings finish. Steel fittings, except stainless when furnished, shall be zinc plated in
accordance with ASTM B633; type II or III, Fe/Zn 5, or ASTM B695, type II, class 5. Both zinc platings
specified in ASTM B633 type III and ASTM B695 shall meet the same 96 hour salt spray test endurance
as ASTM B633 type II zinc plating.
3.5.5.2 Stainless steel fittings. Stainless steel fittings shall be of the following types:
a.
XM-12 (15-5 PH) UNS designator S15500 in accordance with ASTM A564/A 564M.
b.
603 (17-4 PH) UNS designator S17400 in accordance with ASTM A564/A 564M.
c.
304 in accordance with ASTM A276.
d.
316 in accordance with ASTM A276.
e.
321 in accordance with ASTM A276.
3.5.6 Dimensions.
3.5.6.1 Inner tube thickness. The average thickness of a buffed and unbuffed tube shall be not less
than .040 inch (1.02 mm).
3.5.6.2 Length.
3.5.6.2.1 Bulk length. Unless otherwise specified (see 6.2), hose shall be furnished in any length. At
least 80 percent of the lengths furnished shall be 40 feet (12.19 m) or more in length; minimum length
shall be 3 feet (0.91 m).
3.5.6.2.2 Cut length tolerances. When specified in the acquisition document (see 6.2), hose shall be
furnished in cut lengths with a tolerance of plus or minus one percent for lengths of 3 feet (0.91 m) or
greater and ±.25 inch (6.35 mm) for lengths of less than 3 feet (0.91 m).
3.5.6.2.3 Hose assemblies. Lengths of hose assemblies shall be as specified on the applicable
drawing, slash sheet, or procurement documents.
3.5.6.3 Diameters. Inside and outside diameters shall conform to table I and table II, as applicable,
for the type and size specified.
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