ARMY TM 10-1670-282-23&P AIR FORCE T.O. 13C5-30-2 NAVY NAVAIR 13-1-33 Table 2-3.  Stitching and Restitching Specifications. Recommended sewing machine Stitches Thread Component (code symbol) per inch size Canopy Bridle Loop HD 5 to8 6 Vent Line ZZ 7 to 11 E Vent Reinforcement LD 7 to 11 E (upper later band) Panel (upper and lower) LD 7 to 11 E DN Darn E Radial Tape LD 7 to 11 E Annular Ring Reinforcement LD 7 to 11 E (upper and lower) Skirt Reinforcement LD 7 to 11 E (lower lateral band) Suspension Line Reinforce- ZZ 7 to 11 E ment Loop (V-tab) LD 7 to 11 3 Suspension Line MD 5 to 8 E Reinforcement Suspension Line ZZ 7 to 11 E Riser Assembly HD 5 to 8 3 Spreader HD 5 to 8 3 Riser Strap Buffer HD 5 to 8 3 Parachute Inspection LD 7 to 11 E Data Pocket Tie Cord Loop ZZ 7 to 11 E Tie Cord ZZ 7 to 11 E Pack Edge Binding MD 7 to 11 E Pack Closing Loop MD 7to 11 E Tiedown Strap loop HD 5 to 8 3 Panels and Flaps DN Darn E Static Line Retaining Loop MD 7 to 11 E Static Line Static Line Webbing Length MD 7 to 11 E Breakcord Attaching Loop HD 5 to 8 6 Clevis Attaching Loop HD 5 to 8 6 Pack Attaching Loop HD 5 to 8 3 Static Line Parachute Drogue Body and Vanes DN Darn E Reinforcement Tape LD 7 to 11 E Attaching Loop ZZ 7 to 11 E 2-55