TORQUE SPECIFICATIONS FOR

 

 

 

 

STANDARD MACHINE HARDWARE

 

 

 

 

 

 

 

TOLERANCE

+200/o

 

 

 

 

 

 

 

 

 

 

 

 

SIZE

SAEGRADE #2

 

SAEGRADE A15

 

 

SAEGRADE #8

 

 

0

 

 

 

Q

 

8.

 

InJLbs.

 

 

In./Lbs.

 

 

 

InAbs.

 

 

Ft.lLbs.

 

 

N m .

Ft./Lb.s.

 

Nm.

 

Ft.Rbs.

Nm.

8-32

1 9

 

 

2.1

 

30

3.4

 

41

4.6

8 - 3 6

2 0

 

 

2.3

 

31

3.5

 

43

4.9

lo-24

2 7

 

 

3.1

 

43

4.9

 

60

6.8

lo-32

3 1

 

 

3.5

-

49

5.5

 

68

7.7

l/4-20

6 6

 

 

7.6

8

-

 

12

16.3

 

 

 

10.9

 

l/4-28

7 6

 

 

8.6

 

10

13.6

 

14

19.

5116-18

11

 

 

15.

 

17

23.1

 

25

34.

5116-24

12

,,

16.3

 

19

25.8

 

25

34.

318-16

,20

 

 

27.2

 

30

40.8

 

45

61.2

318-24

' 2 3

 

 

31.3

 

35

47.6

 

50

68.

7116-14

3 0

 

 

40.8

 

50

.68.

 

' 70

95.2

7116-20

3 5

 

 

47.6

 

55

74.8

 

80

108.8

l/2-13

5 0

 

 

6 8 .

 

75

102.

 

110

149.6

112-20

5 5

 

 

74.8

 

90

122.4

 

 

120 i

163.2

9116-12

6 5

 

 

83.4

110

149.8

 

150'

204.

9116-18

7 5

 

 

102.,

120

163.2

 

170

231.2

518-11

9 0

 

 

122.4

150

204.

 

220

299.2

518-18

100

 

 

136.

180

244.8

 

240

, 326.4

314-10

160

 

 

2 1 7 . 6

260

353.6

 

386

525.

3/4-16

180

 

 

2 4 4 . 8

300

408.

 

420

571.2

718-g

140

 

 

190.4

400

544.

 

600

816.

718-14

155

 

 

2 1 0 . 8

440

598.4

 

660

897.6

1-8

2 2 0

 

 

2 9 9 . 2

580

788.8

 

900

1,224.

1-12

2 4 0

 

 

3 2 6 . 4

640

870.4

 

1,000

1,360.

 

 

 

 

 

 

 

 

 

 

 

 

 

NOTE:

1.These torque values are to be used for all hardware excluding: locknuts, self-tapping screws, thread forming screws, sheet metal screws and socket head setscrews.

..::::,,

2. Recommended seating torque values for locknuts:

 

a. For prevailing torque locknuts- use65% of grade 5

 

torques.

 

b.Forflange whizlock nuts(andscrews) -usa 135%

 

of grade,5 torques.

3.Unless otherwise noted on assembly drawings all torque values must meet this specification.

BOLTHEADMARKING

S.A.E.GRADE:

20

Page 19
Image 19
Snapper 1691998, 1691810 manual Tolerance