Manitowoc National Crane NBT40 Series Service Manual

National Crane Published 8-01-2017 Control # 287-11 1-17
NBT40 SERVICE MANUAL INTRODUCTION
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Table 1-10 Inch Series with Fine Threads (UNF) – Untreated (black finish)
Size Grade
Torque (ft/lb)
Maximum Nominal Minimum
1/4-28
510 9.5 9
8 14.5 14 13.5
5/16-24
5 21 20 19
8262524
3/8-24
5363534
8535149
7/16-20
5575553
8858279
1/2-20
5 88 84.5 81
8 125 120 115
9/16-18
5 126 121 116
8 177 170 163
5/8-18
5 182 174.5 167
8 250 240 230
3/4-16
5 312 299.5 287
8 425 409 393
7/8-14
5 458 439.5 421
8 672 646 620
1-12
5 658 632 606
8 1009 970 931
1-14 UNS
5 670 644.5 619
8 945 908.5 872
1 1/8-12
5 882 848 814
8 1500 1440 1380
1 1/4-12
5 1251 1203 1155
8 2092 2008.5 1925
1 3/8-12
5 1704 1638 1572
8 2833 2719 2605
1 1/2-12
5 2288 2196.5 2105
8 3640 3500 3360
Reference Only

Manitowoc National Crane NBT40 Series Specifications

General

Brand	Manitowoc
Model	National Crane NBT40 Series
Category	Construction Equipment
Language	English