Boeing 747 - Page 89

DECREASE TO AMBIENT IN STILL AIR
SURFACE FINISH 63 RA OR BETTER ON THE ENDS
(2.2) DEEP X 0.25 (6.3) LONG; MAXIMUM WIDTH 0.030 (0.8)
MILLIMETERS INCHES
2. AT THE END OF THE HEAT TIME, REMOVE THE PART FROM
35 MINUTES OR IN A SALT BATH OF EQUAL TEMPERATURE
1. HEAT TREAT IN A FURNACE AT 1650 DEGREES FAHRENHEIT FOR
(16.5)
ALL DIMENSIONS ARE IN INCHES (mm IN PARENTHESES)
MATERIAL: A LOW CARBON STEEL CAN BE USED (4330,4340)
CHAMFER
2.50
(19.1)(19.1)
0.189
2.44
GRAIN
NOTES:
THE MATERIAL MUST BE NORMALIZED AS FOLLOWS:
FOR 25 MINUTES
THE FURNACE AND LET THE TEMPERATURE OF THE PART
TOLERANCES:
X.X = ± 0.25
X.XX
= ± 0.1
X.XX = ± 0.10
X.XXX = ± 0.005
ETCH OR STAMP THE REFERENCE STANDARD PART NUMBER NDT4123
ELECTRO-DISCHARGE MACHINE (EDM) NOTCH SIZE 0.085
______
(4.8)
45 ˚
0.080 x 15 ˚
(2.03)
DIRECTION
(62.0)
(63.5)
0.75 0.75
1.22
(31.0)
0.65
0.374
(9.50)
1
3
3
3
1
2
1
2
3
2131080 S0000459193_V1
Reference Standard NDT4123
Figure 3
747
NONDESTRUCTIVE TEST MANUAL
PART 4 54-30-10
Page 9
Nov 15/2015D6-7170
ECCN 9E991 BOEING PROPRIETARY - Copyright © Unpublished Work - See title page for details
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