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MECHANICAL PROPERTIES OF FASTENERS

MECHANICAL PROPERTIES OF FASTENERS

CLASS

New Designation

4.6

4.8

5.6

5.8

6.6

6.8

6.9

8.8

10.9

12.9

14.9

Formerly

4D

4S

5D

5S

6D

6S

6G

8G

10K

12K

--

U.S. GRADE

1

2

2

2

3

3

3

5

8

--

--

Brinell

min.

max.

 

110

170

 

140

215

 

170

245

 

225

300

 

280

365

 

330

425

 

390

--

 

Rockwell

_x0000_i1093

min.

max.

 

63

88

 

78

97

 

88

102

 

--

--

 

--

--

 

--

--

 

--

--

 

_x0000_i1094

min.

max.

 

--

  
 

 

--

  
 

 

--

  
 

 

18

31

 

27

38

 

34

44

 

40

49

 

Yield Point psi

45,000

56,000

76,000

76,000

91,000

128,000

153,000

180,000

Tensile
Strength psi

min.

max.

 

56,000

78,000

 

70,000

100,000

 

85,000

113,000

 

85,338

99,561

 

113,784

128,000

 

142,230

170,676

 

170,000

200,000

 

200,000

230,000
08-04-16  
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