MIL-DTL-43176D
3.3 Construction. The construction of the latrine screen shall conform to the drawings
listed in 2.2.2 and as specified herein.
3.3.1 Stitching, machine.
*3.3.1.1 Types. All stitch types, shall conform to ASTM-D-6193 as follows:
a. For all stitching except stitching indicated by "Z" on drawings type 301, 5 to
7 stitches per inch.
b. For stitching indicated by "Z" on drawings type 401, 5 to 7 stitches per inch.
Chain portion of stitching shall not appear on outside of screen or cover.
3.3.1.2 Stitching ends. The ends of 301 stitching shall be overstitched not less than 1 inch
except where ends are turned under in a hem, held down by other stitching or where stitching is
performed automatically. Where 301 stitching is performed automatically on stitch patterns such
as box, box with cross-stitch, " W" stitching or straight line tacking, not less than three tying,
overlapping , or back stitches shall be used to secure the ends of stitching.
3.3.1.3 Thread breaks. Thread breaks in stitching shall be overstitched not less than 1 inch
at each break on stitch type 301, and not less than 1 ½ inches at each break on stitch type 401.
Thread breaks noted during inspection shall be repaired by overstitching the existing stitching and
the defective area for not less than one inch on type 301 stitching and 1 ½ inches on type 401
stitching on each side of the break. The ends of repair stitching are not required to be
backstitched. Thread breaks in type 401 stitching may be overstitched with stitch type 301.
*3.3.1.4 Thread lubricant. The addition of any lubricant to the polyester sewing thread
prior to or during the sewing operation is prohibited.
3.3.1.5 Skipped stitches. Two or more consecutively skipped stitches occurring in type
301 stitching shall be overstitched not less than 1 inch on each side of skips. Any skipped stitches
in type 401 stitching shall be overstitched not less than 1-½ inches on each side of skip. Skipped
stitches in 401 stitching may be overstitched with type 301 stitching.
3.3.1.6 Automatic stitching. Automatic stitching machines may be used to perform any of
the required stitch patterns provided the requirements of the stitch pattern, stitches per inch, size
and type of thread are met and at least three or more tying, overlapping or backstitches are used
to secure the ends of the stitching.
*3.4 Repairs. All necessary repairs shall be effected in accordance with Department of
The Army Field Manual FM 10-16, except that hand-sewn patches, or cemented patches other
than as specified herein will not be acceptable. Cemented patches on holes, cuts or tears not more
than 1 inch in diameter or length, using cement conforming to Minnesota Mining and
Manufacturing Co., part # 847 or equal (see 6.6) will be permitted. A maximum of two cemented
patches per section will be allowable without prior contracting officer authorization. All other
repairs shall require authorization by the contracting officer.
3.5 Location marks. Marks for showing location of component parts may be done with
marking ink or by the use of drill holes. Ink marks or drill holes shall be located such that the
marks or holes are completely and permanently covered by the component part.
3.6 Replacement of defective components. During the manufacturing process,
components having material defects or damages that are classified as defects in 4.4.3 shall be
removed from production and replaced with non-defective or properly matched components.
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