Specifications. Midland Belly/Bottom Dump Trailer 4.6MB, Belly/Bottom Dump Trailer

7 SPECIFICATIONS

7.1 BOLT TORQUE

CHECKING BOLT TORQUE

The tables shown below give correct torque values for various bolts and capscrews. Tighten all bolts to the torques specified in chart unless otherwise noted. Check tightness of bolts periodically, using bolt torque chart as a guide. Replace hardware with the same strength bolt.

ENGLISH TORQUE SPECIFICATIONS

Bolt

Diameter

"A"

1/4"

5/16"

3/8"

7/16"

1/2"

9/16"

5/8"

3/4"

7/8"

1"

SAE 2

(N.m) (lb-ft)

Bolt Torque*

SAE 5

(N.m) (lb-ft)

SAE 8

(N.m) (lb-ft)

61

95

128

225

8

13

27

41

230

345

45

60

95

165

6

10

20

30

170

225

110

155

215

390

12

25

45

72

570

850

80

115

160

290

9

19

33

53

420

630

17

36

63

100

155

220

305

540

880

1320

115

165

220

400

12

27

45

75

650

970

METRIC TORQUE SPECIFICATIONS

Bolt

Diameter

"A"

M3

M4

M5

M6

M8

M10

M12

M14

M16

M20

M24

M30

M36

8.8

Bolt Torque*

(N.m) (lb-ft)

10.9

(N.m) (lb-ft)

25

50

90

140

.5

3

6

10

225

435

750

1495

2600

.4

2.2

4

7

18

37

66

103

166

321

553

1103

1917

1.8

4.5

9

15

35

70

125

200

310

610

1050

2100

3675

1.3

3.3

7

11

26

52

92

148

229

450

774

1550

2710

Torque figures indicated above are valid for non-greased or non-oiled threads and heads unless otherwise specified. Therefore, do not grease or oil bolts or capscrews unless otherwise specified in this manual. When using locking elements, increase torque values by 5%.

* Torque value for bolts and capscrews are identified by their head markings.

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