Toro 4100-D service manual In-lb

Standard Torque for Dry, Zinc Plated and Steel Fasteners (Inch Series)

Grade 1, 5 &

SAE Grade 1 Bolts, Screws, Studs &

SAE Grade 5 Bolts, Screws, Studs &

SAE Grade 8 Bolts, Screws, Studs &

Thread Size

8 with Thin

Sems with Regular Height Nuts

Sems with Regular Height Nuts

Sems with Regular Height Nuts

Height Nuts

(SAE J995 Grade 2 or Stronger Nuts)

(SAE J995 Grade 2 or Stronger Nuts)

(SAE J995 Grade 5 or Stronger Nuts)

in-lb

in-lb

N-cm

in-lb

N-cm

in-lb

N-cm

# 6 -- 32 UNC

10

+ 2

13

+ 2

147

+ 23

15

+ 2

169

+ 23

23

+ 3

262

+ 34

# 6 -- 40 UNF

17

+ 2

192

+ 23

25

+ 3

282

+ 34

# 8 -- 32 UNC

13

+ 2

25

+ 5

282

+ 56

29

+ 3

328

+ 34

41

+ 5

463

+ 56

# 8 -- 36 UNF

31

+ 4

350

+ 45

43

+ 5

486

+ 56

# 10 -- 24 UNC

18

+ 2

30

+ 5

339

+ 56

42

+ 5

475

+ 56

60

+ 6

678

+ 68

# 10 -- 32 UNF

48

+ 5

542

+ 56

68

+ 7

768

+ 79

1/4 -- 20 UNC

48

+ 7

53

+ 7

599

+ 79

100

+ 10

1130

+ 113

140

+ 15

1582

+ 169

1/4 -- 28 UNF

53

+ 7

65 + 10

734 + 113

115 + 12

1299

+ 136

160

+ 17

1808

+ 192

5/16 -- 18 UNC

115 + 15

105

+ 15

1186 + 169

200

+ 25

2260

+ 282

300

+ 30

3390

+ 339

5/16 -- 24 UNF

138

+ 17

128

+ 17

1446

+ 192

225

+ 25

2542

+ 282

325

+ 33

3672

+ 373

ft-lb

ft-lb

N-m

ft-lb

N-m

ft-lb

N-m

3/8 -- 16 UNC

16

+ 2

16

+ 2

22

+ 3

30

+ 3

41

+ 4

43

+ 5

58

+ 7

3/8 -- 24 UNF

17

+ 2

18

+ 2

24

+ 3

35

+ 4

47

+ 5

50

+ 6

68

+ 8

7/16 -- 14 UNC

27

+ 3

27

+ 3

37

+ 4

50

+ 5

68

+ 7

70

+ 7

95

+ 9

7/16 -- 20 UNF

29

+ 3

29

+ 3

39

+ 4

55

+ 6

75

+ 8

77

+ 8

104 + 11

1/2 -- 13 UNC

30

+ 3

48

+ 7

65

+ 9

75

+ 8

102 + 11

105 + 11

142

+ 15

1/2 -- 20 UNF

32

+ 4

53

+ 7

72

+ 9

85

+ 9

115 + 12

120

+ 12

163

+ 16

5/8 -- 11 UNC

65 + 10

88 + 12

119 + 16

150

+ 15

203

+ 20

210

+ 21

285

+ 28

5/8 -- 18 UNF

75 + 10

95 + 15

129

+ 20

170

+ 18

230

+ 24

240

+ 24

325

+ 33

3/4 -- 10 UNC

93 + 12

140

+ 20

190

+ 27

265

+ 27

359

+ 37

375

+ 38

508

+ 52

3/4 -- 16 UNF

115 + 15

165

+ 25

224

+ 34

300

+ 30

407

+ 41

420

+ 43

569

+ 58

7/8 -- 9 UNC

140

+ 20

225

+ 25

305

+ 34

430

+ 45

583

+ 61

600

+ 60

813

+ 81

7/8 -- 14 UNF

155

+ 25

260

+ 30

353

+ 41

475

+ 48

644

+ 65

667

+ 66

904

+ 89

NOTE: Reduce torque values listed in the table above by 25% for lubricated fasteners. Lubricated fasteners are defined as threads coated with a lubricant such as engine oil or thread sealant such as Loctite.

NOTE: Torque values may have to be reduced when installing fasteners into threaded aluminum or brass. The specific torque value should be determined based on the fastener size, the aluminum or base material strength, length of thread engagement, etc.

NOTE: The nominal torque values listed above for Grade 5 and 8 fasteners are based on 75% of the mini- mum proof load specified in SAE J429. The tolerance is approximately + 10% of the nominal torque value. Thin height nuts include jam nuts.

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