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SAE J429
Jun 15,2018

Standar for Bolt

Grade

Bolt Size

Tension Stength

Yield Strength

Enlogation

Hardness

Head Marking

in.

ksi

ksi

%

Surface 30N max

Core Rockwell

SAE J429

GR.2

1/4 to 3/4

74

57

18

/

B80-100

/

over 3/4 to 1-1/2

60

36

18

/

B70-100

GR.5

1/4 to 1

120

92

14

54

C25-34

over 1 to 1-1/2

105

81

14

50

C19-30

GR.8

1/4 to 1-1/2

150

130

12

58.6

C33-39

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