Bolt torque specifications, Chapter 3: hardware requirements – Grain Systems Tanks PNEG-4105 User Manual

Page 25

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Chapter 3: Hardware Requirements

Table 3-2 Hardware for 3-Post Sidewall Sheets on Bins that are 105 Ft in Diameter with 28 to 37 Rings (cont'd.)

Gauge

Horizontal Seam

Bolt Size (Quantity)

Vertical Seam Bolt

Size (Quantity)

Stiffener to Sidewall

Bolt Size (Quantity)

Overlap Seam Bolt

Size (Quantity)

6L

3/8 x 2 (24)

7/16 x 2.5 (48)

3/8 x 2 (24)

3/8 x 2 (6)

6LF

7/16-2 (20)

7/16-2.5 (72)

3/8-2 (24)

7/16-2 (10)

Bolt Torque Specifications

The specification torque table below will help the installer determine how tight a specific bolt must be. A
bolt that has been over tightened can be just as dangerous as one that hasn't been tightened enough.

IMPORTANT: Bolts should not be tightened in excess of the torque specifications chart listed below.

Bolt

Minimum Torque

Maximum Torque

Sealing Joints

(joints with seal-

ing washers)

Structural Joints

(joints without

any sealing

washers)

Sealing Joints

(joints with seal-

ing washers)

Structural Joints

(joints without

any sealing

washers)

ft-lb

N-m

ft-lb

N-m

ft-lb

N-m

ft-lb

N-m

5/16-18 JS Gr 8 with seal

20

27

25

34

3/8 -16 JS Gr 8 with seal

30

41

35

47

7/16-14 JS Gr 8 with seal

50

68

60

81

3/8–16 YDP Gr 8 flanged

40

54

45

61

7/16–14 YDP Gr 8 flanged

65

88

75

101

1/2-13 YDP Gr 8 flanged

100

135

115

155

Pneg-4105 105 Ft Diameter 40-Series Bin

25

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