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THREAD SIZE  TORQUE (POUND-INCHES) 
DRY BOLT  3LUBED BOLT  LUBED BOLT 3 DRY OR 
2-56 OR 2-64  3.4-4.5  3.4-4.5  3.4-4.5 
4-40 OR 4-48  6-8  6-8  6-8 
6-32 OR 6-40  12-15  12-15  12-15 
8-32 OR 8-36  15-20  15-17  15-17 
10-32  25-35  20-25  18-25 
1/4-28  50-80  50-75  30-50 
5/16-24  100-150  90-125  60-95 
3/8-24  160-240  150-200  95-160 
7/16-20  250-350  240-300  220-280 
1/2-20  480-790  440-650  290-510 
9/16-18  800-1150  700-920  480-850 
5/8-18  1100-1500  1000-1200  660-980 
3/4-16  2300-3000  1700-2150  1300-2000 
7/8-14  2500-4500  2600-3400  1500-3300 
1-12 OR 1-14  3700-7500  3600-5500  2200-5300 
1-1/8-12  5000-9000  4900-6700  3000-6200 
1-1/2-12 1-3/8-12 1-1/4-12  9000-13,000 ------ ------7500-9700  10,000-12,000 7000-9000 5400-8600 

WHEN YOU USE THE PROCEDURE TO WRENCH THE HEAD OF THE BOLT AS YOU INSTALL IT (SUCH AS WHEN YOU INSTALL THE BOLTS INTO PLATE NUTS, CLIP NUTS, BARREL NUTS, INSERTS OR TAPPED HOLES), USE THE MAXIMUM TORQUE SHOWN IN THE TABLE FOR THE NUT |10%.
WHEN YOU INSTALL B30LE OR B30PN BOLTS WITH AN N10HR NUT, USE THE TORQUE VALUES GIVEN WITH THE N10GW NUTS.
LUBRICATED BOLTS INCLUDE DRY-FILM-LUBRICATED (MIL-L-8937) BOLTS AND BOLTS WITH ANTI-FRICTION COMPOUNDS SUCH AS EASE-OFF 990, MIL-C-11796 AND MIL-G-23827 APPLIED TO THE THREADS.
Standard Torque Values for Bolts and Nuts (Pound-Inches)
Figure 202 (Sheet 2)

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 ú  C01  Page 208
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
////////////////////////A / /
CFM56 ENGINES
737-300/400/500/ /MAINTENANCE MANUAL ////////////////////////

WHEN YOU USE THE PROCEDURE TO WRENCH THE HEAD OF THE BOLT AS YOU INSTALL IT (SUCH AS WHEN YOU INSTALL THE BOLTS INTO PLATE NUTS, CLIP NUTS, BARREL NUTS, INSERTS OR TAPPED HOLES), USE THE MAXIMUM TORQUE SHOWN IN THE TABLE FOR THE NUT |10%.
WHEN YOU INSTALL B30LE OR B30PN BOLTS WITH AN N10HR NUT, USE THE TORQUE VALUES GIVEN WITH THE N10GW NUTS.

LUBRICATED BOLTS INCLUDE DRY-FILM-LUBRICATED (MIL-L-8937) BOLTS AND BOLTS WITH ANTI-FRICTION COMPOUNDS SUCH AS EASE-OFF 990, MIL-C-11796 AND MIL-G-23827 APPLIED TO THE THREADS.
MAXIMUM TORQUE PERMITTED TO ALIGN THE CASTELLATED NUT AND HOLE WHEN YOU INSTALL A COTTER PIN
OR OTHER SAFETY DEVICE.
Standard Torque Values for Bolts and Nuts (Pound-Inches) Figure 202 (Sheet 3)
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

 70-20-02
 ALL  ú ú C01 Page 209 ú Nov 15/91
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
////////////////////////A / /
CFM56 ENGINES
737-300/400/500/ /MAINTENANCE MANUAL ////////////////////////
NUT TIGHTENING TORQUE 1 
N U T  PART NUMBER AND STYLE  N10HR (12-POINT), N10JG (12-POINT), N10HC (BARREL-NUT)  NAS1804-1805 (12-POINT), N10GW (12-POINT), N10JB (PLATE-NUT), N10RM (PLATE-NUT), NAS577 (BARREL-NUT), N10JD (CASTELLATED-THICK STYLE 7/16 THRU 1-1/4 ONLY) POINT), N10JA (PLATE-NUT), N10B (12-
STYLE  12-POINT  12-POINT  HEX HEAD  PAN HEAD  100` HEAD 
PART NUMBER  B30NG  B30FD  B30NE  B30LN  B30LP 
B30NH  B30MR  B30LM  B30NS  B30EM 
B O  B30MT B30US B30TR  B30LE B30PN 2  B20NM NAS6603 THRU B30EM  B30LU B30LR B30MS 
L  NAS6620  B30NN 
T  NAS6703 THRU 
NAS6720 
THREAD SIZE  TORQUE (N.m) 
DRY BOLT  LUBED BOLT 3  DRY BOLT  LUBED BOLT 3 
2-56 OR 2-64  --- --- --- ---
4-40 OR 4-48  --- --- --- ---
6-32 OR 6-40  --- --- --- ---
8-32 OR 8-36  --- --- --- ---
10-32  --- --- 3.5-4  2-3 
1/4-28  10-14  8-9  7.5-11  6-8 
　
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