TM 10-1670-280-23&P 0040 00
0040 00-2
STITCHING AND RESTITCHING
Perform stitching and restitching as follows, referring to Table 1 and Table 2:
1. Parachute canopy assemblies. The stitching and restitching made on parachute canopies should be
accomplished with thread that is contrasting in color to the fabric being restitched. If contrasting color
thread is not available, thread of matching color may be used, providing all other specifications are met.
Straight stitching and restitching on parachute canopy assemblies should be locked by at least 2-inches
at each end of a stitch row, when possible. Zig-zag stitching does not require locking; however, zig-zag
restitching should extend at least ¼-inch into undamaged stitching at each end, when possible. When
restitching parachute canopy assemblies, stitch directly over the original stitching and follow the original
stitch pattern as closely as possible.
Table 1. 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: Zig-zag; 308 stitch; medium-duty; NSN 3530-01-181-1421.
LD ZZ
SEWING MACHINE, INDUSTRIAL: Zig-zag; 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; lock stitch; 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.
Table 2. Stitching and Restitching Specifications
COMPONENT
RECOMMENDED
SEWING MACHINE
(CODE SYMBOL)
STITCHES
PER INCH
THREAD
SIZE
The 100-Foot-Diameter Cargo Parachute
Gore Section
LD
7 to 11
E
Canopy Line
ZZ
7 to 11
E
Radial Line
ZZ
7 to 11
E
Suspension line
MD
5 to 8
3
Radial Line Reinforcement Tape
LD
7 to 11
E
V-Tab
LD
ZZ
7 to 11
7 to 11
E
E
