Inch to Metric Conversion Chart (Bolt Size)

Bolt Size (IN) A Measure (IN) Equal Bolt Size (MM) Bolt Size (MM)
3/8" Bolt Slot 1/2" = M10 Bolt 12mm Slot
7/16" Bolt Slot 9/16" = M12 Bolt 14mm Slot
1/2" Bolt Slot 5/8" = M14 Bolt 16mm Slot
5/8" Bolt Slot 11/16" = M16 Bolt 18mm Slot
3/4" Bolt Slot 7/8" = M18 Bolt 20mm Slot
13/16" Bolt Slot 15/16" = M20 Bolt 22mm Slot
7/8" Bolt Slot 1" = M22 Bolt 24mm Slot
1" Bolt Slot 1 1/8" = M24 Bolt 26mm Slot

 


Metric to Inch Conversion Chart

MM

IN

MM

IN

MM

IN

MM

IN

MM

IN

MM

IN

1

0.04

35

1.38

69

2.72

103

4.06

137

5.40

171

6.74

2

0.08

36

1.42

70

2.76

104

4.10

138

5.44

172

6.78

3

0.12

37

1.46

71

2.80

105

4.14

139

5.48

173

6.82

4

0.16

38

1.50

72

2.84

106

4.18

140

5.52

174

6.86

5

0.20

39

1.54

73

2.88

107

4.22

141

5.56

175

6.90

6

0.24

40

1.58

74

2.92

108

4.26

142

5.59

176

6.93

7

0.28

41

1.62

75

2.96

109

4.29

143

5.63

177

6.97

8

0.32

42

1.65

76

2.99

110

4.33

144

5.67

178

7.01

9

0.35

43

1.69

77

3.03

111

4.37

145

5.71

179

7.05

10

0.39

44

1.73

78

3.07

112

4.41

146

5.75

180

7.09

11

0.43

45

1.77

79

3.11

113

4.45

147

5.79

181

7.13

12

0.47

46

1.81

80

3.15

114

4.49

148

5.83

182

7.17

13

0.51

47

1.85

81

3.19

115

4.53

149

5.87

183

7.21

14

0.55

48

1.89

82

3.23

116

4.57

150

5.91

184

7.25

15

0.59

49

1.93

83

3.27

117

4.61

151

5.95

185

7.29

16

0.63

50

1.97

84

3.31

118

4.65

152

5.99

186

7.33

17

0.67

51

2.01

85

3.35

119

4.69

153

6.03

187

7.37

18

0.71

52

2.05

86

3.39

120

4.73

154

6.07

188

7.41

19

0.75

53

2.09

87

3.43

121

4.77

155

6.11

189

7.45

20

0.79

54

2.13

88

3.47

122

4.81

156

6.15

190

7.49

21

0.83

55

2.17

89

3.51

123

4.85

157

6.19

191

7.53

22

0.87

56

2.21

90

3.55

124

4.89

158

6.23

192

7.56

23

0.91

57

2.25

91

3.59

125

4.93

159

6.26

193

7.60

24

0.95

58

2.29

92

3.62

126

4.96

160

6.30

194

7.64

25

0.99

59

2.32

93

3.66

127

5.00

161

6.34

195

7.68

26

1.02

60

2.36

94

3.70

128

5.04

162

6.38

196

7.72

27

1.06

61

2.40

95

3.74

129

5.08

163

6.42

197

7.76

28

1.10

62

2.44

96

3.78

130

5.12

164

6.46

198

7.80

29

1.14

63

2.48

97

3.82

131

5.16

165

6.50

199

7.84

30

1.18

64

2.52

98

3.86

132

5.20

166

6.54

200

7.88

31

1.22

65

2.56

99

3.90

133

5.24

167

6.58

 MM=millimeters

32

1.26

66

2.60

100

3.94

134

5.28

168

6.62

33

1.30

67

2.64

101

3.98

135

5.32

169

6.66

 IN=inches

34

1.34

68

2.68

102

4.02

136

5.36

170

6.70