Boeing 747 - Page 88

PART DECREASE TO AMBIENT IN STILL AIR.
THE MATERIAL MUST BE NORMALIZED AS FOLLOWS:
3
3
2
3
SURFACE FINISH 63 RA OR BETTER ON THE ENDS
ETCH
OR STAMP THE REFERENCE STANDARD PART NUMBER NDT4115 AS SHOWN
ELECTRO-DISCHARGE MACHINE (EDM) NOTCH SIZE 0.085 (2.2) 1
NOTES: _____
3
3
GRAIN
DIRECTION
1
(10.3)
0.40
(4.3)
0.17
1
2
X.X = ± 0.25
X.XX
= ± 0.1
NOTCH
EDM
(3.6)
0.14
45.0 ˚
CHAMFER 0.080 X 15 ˚
30.0 ˚ (TYP)
(5.1)
(TYP)
R 0.20
(63.5)
2.50
(19.1)
0.75
(19.1)
0.75
(104.6)
4.12
(23.6)
0.928
(8.9)
0.35
(8.9)
0.35 0.928
(23.6)
NDT4115
MATERIAL: ANY LOW CARBON STEEL CAN BE USED (4330, 4340)
FURNACE (OR SALT BATH) AND LET THE TEMPERATURE OF THE
TOLERANCES:
X.XX = ± 0.010
X.XXX
= ± 0.005
ALL DIMENSIONS ARE IN INCHES (mm IN PARENTHESES)
1. HEAT TREAT IN A FURNACE AT 1650 DEGREES FAHRENHEIT FOR 35
MINUTES OR IN A SALT BATH OF EQUAL TEMPERATURE FOR 25 MINUTES
2. AT THE END OF THE HEAT TIME, REMOVE THE PART FROM THE
INCHES MILLIMETERS
DEEP X 0.25 (6.3) LONG; MAXIMUM WIDTH 0.030 (0.8)
2131078 S0000459192_V1
Reference Standard NDT4115
Figure 2
747
NONDESTRUCTIVE TEST MANUAL
PART 4 54-30-10
Page 8
Nov 15/2015D6-7170
ECCN 9E991 BOEING PROPRIETARY - Copyright © Unpublished Work - See title page for details
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