ELETTRA-LOK

 

 


               FUSED-PAD SELF-LOCKING FASTENERS  

        Specification No. 124 / 524, September 1973, for class 2A bolts
      in class 2B nuts

        Note: The imperial unit of torque measurement is
              - inch - lb (force) and the Metric unit is
              the Newton-Metre and is designated by Nm.

        For Conversion - 1 inch-lb = .113 Nm
 

 

Max Prev. Torque

Minimum Prevailing Torques

 

1st Installation

1st Removal

5th Removal

 

Imp. Diam.

Metric Diam.

Inch-lb

Nm.

Inch-lb

Nm approx

Inch-lb

Nm approx

 

1.8"

3mm

8

.9

2

.23

1

.11

  .

4mm

13

1.47

2.5

.28

1.5

0.17

 

3/16"

5mm

18

2.0

3

.34

2

.23

 

1/4"

6mm

40

4.5

5

.57

3

.34

 

5/16"

8mm

85

9.6

8

.9

5

.57

 

3/8"

10mm

110

12.4

14

1.6

9

1.0

 

7/16"

11mm

150

17.0

20

2.3

12

1.4

 

1/2"

12mm

220

24.9

26

2.9

16

1.8

 

9/16"

14mm

270

29.9

35

4.0

22

2.5

 

5/8"

16mm

350

39.6

45

5.1

30

3.4

 

3/4"

20mm

460

52.0

60

6.8

45

5.1

 

7/8"

22mm

700

79.1

95

10.7

65

7.4

 

1"

25mm

900

101.7

130

14.7

85

9.6

        A standard locking element will normally cover up to 1 1/2 diameters in length and
        approximately 150 degrees of circumference, at its central point.