TM 1-1520-238-23 D-239 L PLANE OF FIRST BEND BEND NUMBER DIMENSIONS C H F L 3.65 1 2.10 81.20 0.0 2 14.10 -139.90 24.14 PART NUMBER 7-311710220 3.60 3 7.55 5.30 -167.70 4 15.50 77.60 5 3.24 82.90 138.70 1.40 24.14 24.14 24.14 E 0.75 0.75 0.75 0.75 0.75 24.14 NOTES: 1 TUBE ASSEMBLY, METAL - MAKE FROM AL-ALY TUBING 6061 T6 PER MIL-T-7081, TUBE SIZE 0.250 O.D x 0.020 WALL THICKNESS NSN 4710-00-683-9034 2 DIMENSION C IS DISTANCE BETWEEN BENDS 3 FIRST BEND STARTS FROM A END 4 DIMENSION L IS PREPARED LENGTH BEFORE BENDING 5 FINISH - CHROMIC ANODIZE PER MIL-A-8625 TYPE I CLASS I 6 FINISH - CHEMICALLY FILM TREAT FOR ELECTRICAL CONDUCTIVITY PER MIL-C-5541 CLASS 3A FOR 0.050 INCH FROM EACH END, EXTERNAL SURFACES ONLY 7 IDENTIFY AND APPLY MIL-V-173 PROTECTIVE COATING 8 TAPE ARROW  POINTS TO B END 9 ALL DIMENSIONS ARE IN INCHES HS4367-2 PLATE NSN 9905-01-221-0504 NOTE 7 HS184-750 TAPE NOTE 8 -3 TUBE NOTE 5 & 6 A END B END A END B END C F BEND ANGLE H TUBE TURN M04-4937 E BEND RADIUS HS4519-4D ELBOW NSN 4730-01-178-5064 BOTH ENDS Figure D-256. Tube Assembly, Metal PN 7-311210220