Metric bolt and screw torque values – John Deere STARFIRE RTK OMPFP11348 User Manual

Page 52

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Specifications

DX,TORQ2 -19-12JAN11-1/1

Metric Bolt and Screw Torque Values

TS1670 —UN—01MAY03

4.8

4.8

8.8

9.8

10.9

12.9

12.9

12.9

12.9

10.9

9.8

8.8

4.8

Class 4.8

Class 8.8 or 9.8

Class 10.9

Class 12.9

Bolt or Screw

Size

Lubricated

a

Dry

b

Lubricated

a

Dry

b

Lubricated

a

Dry

b

Lubricated

a

Dry

b

N·m

lb.-in.

N·m

lb.-in.

N·m

lb.-in.

N·m

lb.-in.

N·m

lb.-in.

N·m

lb.-in.

N·m

lb.-in.

N·m

lb.-in.

M6

4.7

42

6

53

8.9

79

11.3

100

13

115

16.5

146

15.5

137

19.5

172

N·m

lb.-ft.

N·m

lb.-ft.

N·m

lb.-ft.

N·m

lb.-ft.

M8

11.5

102

14.5

128

22

194

27.5

243

32

23.5

40

29.5

37

27.5

47

35

N·m

lb.-ft.

N·m

lb.-ft.

N·m

lb.-ft.

M10

23

204

29

21

43

32

55

40

63

46

80

59

75

55

95

70

N·m

lb.-ft.

M12

40

29.5

50

37

75

55

95

70

110

80

140

105

130

95

165

120

M14

63

46

80

59

120

88

150

110

175

130

220

165

205

150

260

190

M16

100

74

125

92

190

140

240

175

275

200

350

255

320

235

400

300

M18

135

100

170

125

265

195

330

245

375

275

475

350

440

325

560

410

M20

190

140

245

180

375

275

475

350

530

390

675

500

625

460

790

580

M22

265

195

330

245

510

375

650

480

725

535

920

680

850

625

1080

800

M24

330

245

425

315

650

480

820

600

920

680

1150

850

1080

800

1350

1000

M27

490

360

625

460

950

700

1200

885

1350

1000

1700

1250

1580

1160

2000

1475

M30

660

490

850

625

1290

950

1630

1200

1850

1350

2300

1700

2140

1580

2700

2000

M33

900

665

1150

850

1750

1300

2200

1625

2500

1850

3150

2325

2900

2150

3700

2730

M36

1150

850

1450

1075

2250

1650

2850

2100

3200

2350

4050

3000

3750

2770

4750

3500

Torque values listed are for general use only, based on the strength of
the bolt or screw. DO NOT use these values if a different torque value or
tightening procedure is given for a specific application. For stainless steel
fasteners or for nuts on U-bolts, see the tightening instructions for the
specific application. Tighten plastic insert or crimped steel type lock nuts
by turning the nut to the dry torque shown in the chart, unless different
instructions are given for the specific application.

Shear bolts are designed to fail under predetermined loads. Always
replace shear bolts with identical property class. Replace fasteners with
the same or higher property class. If higher property class fasteners are
used, tighten these to the strength of the original. Make sure fastener
threads are clean and that you properly start thread engagement. When
possible, lubricate plain or zinc plated fasteners other than lock nuts,
wheel bolts or wheel nuts, unless different instructions are given for the
specific application.

a

“Lubricated” means coated with a lubricant such as engine oil, fasteners with phosphate and oil coatings, or M20

and larger fasteners with JDM F13C, F13F or F13J zinc flake coating.

b

“Dry” means plain or zinc plated without any lubrication, or M6 to M18 fasteners with JDM F13B, F13E or F13H zinc flake coating.

40-2

121511

PN=52

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