TORQUE SPECIFICATIONS

HEX HEAD CAP SCREWS

The torque values shown should be used as a general guideline when specific torque values are not given.

Shank Size (Diameter in inches, fine or coarse thread)

U.S. Standard Hardware

 

Grade

SAE Grade 5

SAE Grade 8

 

Flangelock Screw

 

 

 

 

 

 

 

 

 

w/Flangelock Nut

 

ft./lbs

 

Nm

 

ft./lbs

Nm

 

ft./lbs

Nm

 

ft./lbs

 

 

 

 

 

 

¼

 

9

 

12

13

 

18

 

 

 

 

5/16

 

18

 

24

28

 

38

24

 

33

 

3/8

 

31

 

42

46

 

62

40

 

54

 

7/16

 

50

 

68

75

 

108

 

 

 

 

½

 

75

 

102

115

 

156

 

 

 

 

9/16

 

110

 

150

165

 

224

 

 

 

 

5/8

 

150

 

203

225

 

305

 

 

 

 

¾

 

250

 

339

370

 

502

 

 

 

 

7/8

 

378

 

513

591

 

801

 

 

 

 

11/8

 

782

 

1060

1410

 

1912

 

 

 

** Grade 5 - Minimum commercial quality (lower quality not recommended)

Shank Size (Diameter in millimeters, fine or coarse thread)

Metric Standard Hardware

 

Grade

Grade 8.8

 

Grade 10.9

 

Grade 12.9

 

ft./lbs

 

Nm

 

ft./lbs

Nm

 

ft./lbs

Nm

 

ft./lbs

 

 

 

 

 

 

M4

 

1.5

 

2

2.2

 

3

2.7

 

3.6

 

M5

 

3

 

4

4.5

 

6

5.2

 

7

 

M6

 

5.2

 

7

7.5

 

10

8.2

 

11

 

M7

 

8.2

 

11

12

 

16

15

 

20

 

M8

 

13.5

 

18

18.8

 

25

21.8

 

29

 

M10

 

24

 

32

35.2

 

47

43.5

 

58

 

M12

 

43.5

 

58

62.2

 

83

75

 

100

 

M14

 

70.5

 

94

100

 

133

119

 

159

 

M16

 

108

 

144

147

 

196

176

 

235

 

M18

 

142

 

190

202

 

269

242

 

323

 

M20

 

195

 

260

275

 

366

330

 

440

 

M22

 

276

 

368

390

 

520

471

 

628

 

M24

 

353

 

470

498

 

664

596

 

794

 

M27

 

530

 

707

474

 

996

904

 

1205

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Husqvarna Z 42, Z 46 manual Torque Specifications, HEX Head CAP Screws