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C series : Clasp Axial Locking
Locking Mold : clasp axial (horizontal),  
    multi-points of locking 
Material : JIS G4105 (SCM440),
   DIN 17204 (42CrMo4)
Hardness : HRC 30 ±2
Thread Tolerance : ISO 6H
Notes : apply for heavy loading
   


           
                             
Precision Locknuts
A series:  Axial Locking
F series:  Flank Locking
R series:  Radial Locking



               


 



 


    
           


Thread
D
h
g
n- M x L
n
b
c
Max. Nm

C M16x1.5

34

18

29

4-M4x12

4

4

24

3.5

C M17x1

37

32

26

C M18x1.5

38

33

28

C M20x1

40

35

30

C M20x1.5

C M22x1.5

42

37

32

C M24x1.5

44

39

34

C M25x1.5

45

20

40

4-M4x14

5

35

C M26x1.5

C M28x1.5

46

43

37

C M30x1.5

48

45

39

C M32x1.5

50

22

47

4-M4x16

41

C M35x1.5

53

50

44

C M38x1.5

56

53

47

C M40x1.5

58

55

49

C M42x1.5

60

51

C M45x1.5

68

63

6-M4x18

6

6

57

C M48x1.5

69

25

65

58

C M50x1.5

70

66

60

C M52x1.5

72

68

62

C M55x1.5

75

71

65

C M55x2

C M58x1.5

82

26

77

6-M5x20

70

4.5

C M60x1.5

84

79

72

C M60x2

C M62x1.5

86

28

82

75

C M65x1.5

88

84

77

C M65x2

C M68x1.5

93

87

7

80

C M70x1.5

95

89

82

C M70x2

C M72x1.5

97

91

84

C M75x1.5

100

94

87

C M75x2

C M80x2

110

32

103

6-M6x22

8

95

8

C M85x2

115

108

100

C M90x2

120

113

105

C M95x2

125

118

110

C M100x2

130

123

115

C M105x2

135

128

120

C M110x2

140

133

125

C M115x2

145

34

137

130

C M120x2

155

36

146

6-M6x25

136

C M125x2

160

150

140

C M130x2

165

155

148

C M135x2

170

160

8-M6x25

8

10

153

C M140x2

180

38

168

160

C M145x2

185

  173 

 165

C M150x2

190

178

170

C M155x3

195

183

8-M8x30

 175

C M160x3

205

40

190

178

18

C M165x3

210 

195

188

C M170x3

215

200

193

C M175x3

 220

205

 198

C M180x3

230

213

205

C M185x3

235

218

 210

C M190x3

240

223

215

C M195x3 

240

223

 219

C M200x3

245

230

223

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