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 (Newton meters)
Figure 203 (Sheet 1)
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
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CFM56 ENGINES
737-300/400/500/ /MAINTENANCE MANUAL ////////////////////////
NUT TIGHTENING TORQUE 1
PART NUMBER N10JC (SHEET METAL HEX-SIZES #4 THRU 7/16 ONLY), AN316, AN316C, NAS509, NAS1423
N AND STYLE ALL PLATE-NUTS EXCEPT N10JA, N10JB, AND N10RM, (JAM NUTS), N10JC, MS21245
U ALL CLIP-NUTS, INSERTS, AND TAPPED HOLES, MS21042 HEX, MS21043 HEX, N10JD (CASTELLATED- N10JD, MS14145 (CASTELLATED-(HEX SIZES 1/2 THRU 1-1/2),
T THICK STYLE ALL SIZES 3/16 THRU 1-1/4), MS14144 THIN STYLE ALL SIZES -103
(CASTELLATED- THICK STYLE) THRU -120)
STYLE POINT 12- HEX HEAD PAN HEAD 100` HEAD SOCKET HEAD ALL
PART NUMBER B30LT B30LJ B30LK B30PC MS21262 ALL
B30NL B30NR B30NT B30LH MS24678
B B30NJ B30NF B30BE B30RF NAS1351
O L T B30NK B30UU B30PF B30PU S12CB NAS563 THRU 572 NAS1801 B30PW NAS1802 NAS6203 THRU NAS6220 B30BG NAS1217 NAS1218 NAS600 NAS606 NAS623 THRU B30SW B30UW NAS1352
THREAD SIZE TORQUE (N.m)
DRY BOLT LUBED BOLT 3 DRY OR LUBED BOLT 3
2-56 OR 2-64 0.4-0.5 0.4-0.5 0.4-0.5
4-40 OR 4-48 0.7-0.9 0.7-0.9 0.7-0.9
6-32 OR 6-40 1.4-1.7 1.4-1.7 1.4-1.7
8-32 OR 8-36 1.7-2.3 1.7-1.9 1.7-1.9
10-32 3-4 2-3 2-3
1/4-28 6-9 6-8 3.5-6
5/16-24 11-17 10-14 7-11
3/8-24 18-27 17-23 11-18
7/16-20 28-40 27-34 25-32
1/2-20 54-89 50-73 33-58
9/16-18 90-130 79-104 54-96
5/8-18 124-170 113-136 75-111
3/4-16 260-339 192-243 147-226
7/8-14 282-508 294-384 170-373
1-12 OR 1-14 418-848 407-622 249-599
1-1/8-12 565-1017 554-757 339-701
1-1/4-12 1-3/8-12 1-1/2-12 1017-1469 ------ 848-1096 ------ 610-972 791-1017 1130-1356
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 (Newton meters)
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