TM 55-1520-240-23-1 1-18 EXPENDABLE MATERIALS    (Continued) 1-18 ITEM NO. NOMENCLATURE MILITARY SPECIFICATION NSN 425.1 Trailing edge material — 1560-01-318-8604 426 Trichloroethylene, technical O-T-634 6810-00-184-4800 427 Tubing, aluminum, 1/4 inch ID — — 427.1 Tubing, aluminum alloy, 6061-T6, 1/4 X 0.035 inch MIL-T-7081 4710-00-289-2781 427.2 Tubing, aluminum alloy, 6061-T6, 3/8 X 0.035 inch MIL-T-7081 4710-00-684-5074 427.3 Tubing, aluminum alloy, 6061-T6, 1/2 X 0.035 inch MIL-T-7081 4710-00-142-3010 427.4 Tubing, aluminum alloy, 6061-T6, 5/8 X 0.035 inch MIL-T-7081 4710-00-279-0020 427.5 Tubing, aluminum alloy, 6061-T6, 3/4 X 0.035 inch MIL-T-7081 4710-00-289-3038 427.6 Tubing, aluminum alloy, 6061-T6, 1 X 0.049 inch MIL-T-7081 4710-00-289-2537 428 Tubing (extruded shape), synthetic rubber, 9/16 X 0.063 inch MIL-S-6855 — 429 Tubing, aluminum, 1/2 inch diameter — — 429.1 Tubing, CRES, 1/4 X 0.028 inch MIL-T-6845 4710-00-278-3294 429.2 Tubing, CR25, 3/8 X 0.028 inch MIL-T-6845 4710-01-148-9345 429.3 Tubing, CRES, 1/2 X 0.042 inch MIL-T-6845 4710-00-420-4789 429.4 Tubing, CRES, 5/8 X 0.049 inch MIL-T-6845 4710-00-278-3302 429.5 Tubing, CRES, 3/4 X 0.049 inch MIL-T-6845 4710-00-443-4773 430 Tubing (extruded shape), synthetic rubber, 9/16 X 0.063 inch MIL-T-6855 4720-00-720-0320 431 Tubing, electrical insulation, heat shrinkable MIL-T-47051 — 432 Tubing, Teflon, 0.263 inch ID AMS 3654 — 433 Twine, impregnated, lacing and tying MIL-T-713 4720-00-247-1737 434 Varnish, electrical-insulating, type AN, grade CB MIL-I-24092 5970-00-296-2129 435 Varnish, moisture-and fungus-resistant MIL-V-173 5970-00-285-0271 436 Vinegar Z-V-401 8950-00-609-2720 437 Vinyl film, KDA 2917, Union Carbide Plastics Co.  (or equiv) — 8135-00-123-6985 438 Walkway material, type I (smooth) black, color No. 37038 A-A-59166 5610-00-641-0429 439 Walkway material, type I (smooth) gray, color No. 36231 A-A-59166 5610-00-641-0428 440 Walkway material, type II (rough) black, color No. 37038, (Gal) A-A-59166 8010-00-641-0427 440.1 Walkway material, type II (rough) black, color No.  37038 (QT) A-A-59166 8010-00-142-6525 441 Walkway material, type II (rough) gray, color No. 36231 A-A-59166 5610-00-641-0426 442 Wax, aircraft liquid MIL-W-18723 7930-00-267-5588 443 Welding rod AMS5794 3439-00-882-7350 444 Welding rod AMS5679 3439-00-204-0204 445 Welding rod (AWS NO. ERN7W) — — 1-56 Change 3