ARMY TM 10-1670-275-23&P
AIR FORCE TO 13C5-25-2
NAVY NAVAIR 13-1-26
2-17.
Repair - Sewing Procedures (cont).
b. Stitching and Restitching. Perform stitching and restitching as follows, referring to tables 2-2 and 2-3:
(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. Zigzag stitching does not require locking; however, zigzag restitching should extend
at least 1/4 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 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 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 2-3. Stitching and Restitching Specifications.
Component
Recommended sewing machine(code symbol)
Stitches
per inch
Thread
size
Canopy
Gore section
LD
7 to 11
E
DN
Darn
E
2-48
