2 torque charts and guidelines – John Deere rhino pd54 User Manual

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5.2 Torque Charts and Guidelines

Do not use these values if a different torque value or tightening procedure is given for a specific application. Torque values listed are for general use. Check

tightness of fasteners periodically.

Shear bolts are designed to fail under predertermined loads. Always replace shear bolts with identical grade.

Fasteners should be replaced with the same or higher grade. If higher grade fasteners are used, these should only be tightened to the strength of the original.

Make sure fasteners' threads are clean and that you properly start thread engagement. This will prevent them from failing when tightening.

SAE GRADE 5

Coarse Thread, Zinc-Plated

SAE GRADE 8

Coarse Thread, Zinc-Plated

SIZE

TORQUE

SIZE

TORQUE

ft. lbs.

Nm

ft. lbs.

Nm

1/4 - 20 (.250)

6

8

1/4 - 20 (.250)

9

12

5/16 - 18 (.3125)

13

18

5/16 - 18 (.3125)

18

24

3/8 - 16 (.375)

23

31

3/8 - 16 (.375)

33

45

7/16 - 14 (.4375)

37

50

7/16 - 14 (.4375)

52

70

1/2 - 13 (.500)

57

77

1/2 - 13 (.500)

80

108

9/16 - 12 (.5625)

82

111

9/16 - 12 (.5625)

115

156

5/8 - 11 (.625)

112

152

5/8 - 11 (.625)

159

215

3/4 - 10 (.750)

200

271

3/4 - 10 (.750)

282

382

7/8 - 9 (.875)

322

436.5

7/8 - 9 (.875)

454

615

1 - 8 (1.000)

483

655

1 - 8 (1.000)

682

925

SAE GRADE 5

Fine Thread, Zinc-Plated

SAE GRADE 8

Fine Thread, Zinc-Plated

SIZE

TORQUE

SIZE

TORQUE

ft. lbs.

Nm

ft. lbs.

Nm

1/4 - 28 (.250)

7

10

1/4 - 28 (.250)

10

14

5/16 - 24 (.3125)

14

19

5/16 - 24 (.3125)

20

27

3/8 - 24 (.375)

26

35

3/8 - 24 (.375)

37

50

7/16 - 20 (.4375)

41

56

7/16 - 20 (.4375)

58

79

1/2 - 20 (.500)

64

87

1/2 - 20 (.500)

90

122

9/16 - 18 (.5625)

91

123

9/16 - 18 (.5625)

129

175

5/8 - 18 (.625)

128

173

5/8 - 18 (.625)

180

244

3/4 - 16 (.750)

223

302

3/4 - 16 (.750)

315

427

7/8 - 14 (.875)

355

481

7/8 - 9 (.875)

501

679

1 - 12 (1.000)

529

717

1 - 12 (1.000)

746

1011

1 -14 (1.000)

541

733

1 -14 (1.000)

764

1036

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