TM 10-1670-298-20&P
e.
Stitching and Restitching. Stitching and restitching on airdrop equipment constructed from cloth, canvas, and
webbing should be accomplished with thread which matches the color of the original stitching, when possible. All
straight stitching should be locked by back stitching each end of the stitch formation by ½-inch (1 270 cm.).
Restitching should be locked by overstitching each end of the stitch formation by ½-inch (1.270 cm). Zigzag
stitching does not require locking; however, zigzag restitching should extend at least ¼-inch (0.635 cm) into
undamaged stitching at each end, when possible. Restitching should be made directly over the original stitching,
following the original stitch pattern as closely as possible.
NOTE
Table 2-2 lists the various industrial sewing machine symbols common
to most aerial delivery repair facilities and Table 2-3 Indicates stitching
specifics normally encountered while performing maintenance on aerial
delivery textile items of equipment.
Table 2-2. Sewing Machine Code Symbols
Code Symbol
Sewing Machine
LD
SEWING MACHINE, INDUSTRIAL: General sewing, 301 stitch; light duty; NSN
3530-01-177-8590.
MD ZZ
SEWING MACHINE, INDUSTRIAL: Zigzag, 308 stitch; medium duty; NSN
3520-01-181-1421.
LD ZZ
SEWING MACHINE, INDUSTRIAL: Zigzag, 308 stitch; light duty; NSN
3530-01-181-1420.
HD
SEWING MACHINE, INDUSTRIAL: General sewing; 301 stitch, heavy duty, NSN
3530-01-177-8588.
MD
SEWING MACHINE, INDUSTRIAL: General sewing, 301 stitch; medium duty,
NSN 3530-01-177-8591.
DN
SEWING MACHINE, INDUSTRIAL: Darning; lockstitch, NSN 3530-01-177-8589.
LHD
SEWING MACHINE, INDUSTRIAL: 301 stitch; light heavy duty, NSN
3530-01-186-3079.
ND
SEWING MACHINE, INDUSTRIAL: 301 stitch, double-needle; NSN
3530-01-182-2873.
2-11
