MIL-DTL-85633C
3.9 Cutting. All fabric pieces shall be cut in accordance with the patterns. If no
directional line is given on the pattern the long dimension of the pieces shall be cut in the
direction of the fabric warp.
3.10 Marking. Cut parts shall be marked, ticketed, or bundled to ensure a uniform size
throughout the coverall. Any method of marking shall be used except metal fastening devices,
sewn on tickets, or adhesive type tickets that leave traces of adhesive on the material after
removal of the ticket. Drill holes may be used to mark the lay only in areas where the drill marks
will be buried within a seam and covered by seam tape.
3.11 Stitches, seams, and stitching. ASTM-D6193 stitch types 301 and 401, with 8 to 10
stitches per inch shall be used in the construction of the coveralls. Seams shall be as specified in
construction drawings (see 3.7).
3.12 Heat sealing. All sewn seams and stitching shall be covered on the inside of the
coverall and sealed with the seam tape. The entire width of the seam tape shall be heat sealed
over the seams and stitching. Crossover areas and ends left unsealed after heat sealing shall be
taped. To maintain a tape overlap, sealed sewn seams shall not contain more than two layers of
seam tape per seam. The tape shall not lift from the seam at any point. The neck and wrist seals
attaching seams to the coverall shall be covered on the inside of the coveralls. End joints where
the tape passes over taped seams on the coveralls shall be avoided. The overlap of splicings and
tape ends shall be not less than ¾ inch.
3.12.1 Patches for mending. The coveralls shall contain no more than three mending
patches. Patching of fabrication defects shall be permitted by a 2 inch diameter patch (see
Drawing 1370AS502) on the inside of the coveralls and of a color to match the color of the
backing cloth. Patches shall be applied at a temperature of 350 °F for 20 seconds at
75 ± 2 ft. lbs. pressure. When patching is used it shall be noted on the inspection form (see
figures 9, 10, 11, and 12). The patched area shall not leak (see 3.14).
3.13 Finished garment dimensions. The finished garment dimensions shall be as
specified in tables II through VI, as applicable. The garment shall lie flat with the zipper fully
closed when measuring. Locations A through N are shown on figures 1 through 8. Do not
stretch knit at any time during garment measurement.
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