MIL-DTL-43549D
b. Except for prestitching, thread breaks, or two or more consecutive skipped or
run-off stitches noted during inspection of the item will be repaired by overstitching. The stitching will
start a minimum of 1/2 inch in back of the defective area, continue over the defective area, and continue
a minimum of 1/2 inch beyond the defective area onto the
existing stitching. Loose or excessively tight stitching will be repaired by removing the
defective stitching without damaging the materials, and restitching in the required manner. 1/
1/ When making the above repairs, the ends of the stitching are not required to be
backstitched.
3.8.3 Type 401, 504, and 505 stitching. Thread tension will be maintained so that there will
be no loose or excessively tight stitching. All repairs shall be in accordance with 3.8.2. a and b. Type
301 stitching may be used to repair Type 401 stitching.
3.8.4 Buttonhole. The buttonholes will be eyelet end, taper bar type, worked over gimp (see 3.3.1)
with not less than four tacking stitches at bar end (not counting crossover stitch). The purling shall be on
the outside. The finished cut lengths shall be 1 to 1-1/8 inches. The buttonholes shall be clean cut with
the stitching securely caught `in the fabric. Additive treatments or materials used to secure the ends of
the stitching or to stiffen the fabric, prior to stitching the buttonholes are prohibited.
3.8.5 Bartacking. Bartacking will be 1/2 + 1/16 inch long, 1/8 + 1/32 inch wide and shall contain a
minimum of 28 stitches. Bartacks shall be free from thread breaks and 1oose
stitching.
3.8.6 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,
and size and type of thread are met, and at least three tying, overlapping, or back stitches
are used to secure the ends of the stitching.
3.8.7 Thread ends. All thread ends that are visible on the finished item will be trimmed to a length of
not more than 1/4 inch.
3.8.8 Repairs. Repairs such as mends, darns, patches, or splices are not permitted on the cap.
3.9 Manufacturing operations requirements. The cap will be manufactured in accordance
with operations requirements specified in Table II. Unless otherwise specified in Table II,
the contractor is not required to follow the exact sequence of operations listed. Any
additional basting or holding stitching to facilitate manufacture is permissible provided the thread is
removed or does not show on the finished cap.
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