U.S. Navy Chain and Open Link Mooring Chain

U.S.N. STUD-LINK WELDED

usn studlink chain

 

Chain Size Inches

Link Width A Inches

D
Length over 6 Links
Inches

Link Width
B Inches

Grip Radius C Inches

Number of Links per 15-Fathom Shot

Proof Test Load (lb,)

Break Test Load (lb,)

Nominal Weight per 15 Fathom Shot (lb,)

Minimum

Nominal

Maximum

3/4*

4-1/2

19-38

19-1/2

19-13/6

2-5/8

1/2

369

48,000

75,000

430

7/8*

5-1/4

22-5/8

22-3/4

23-1/16

3-1/8

37AM

305

64,400

96,000

660

1 *

6

25-7/8

26

26-38

3-9/16

21/32

267

84,000

129,000

860

1-1/8*

6-3'4

29-1/18

29-1/4

29-58

4

25/32

237

106,000

161,000

1,060

1-1/4*

7-1/2

32-5/18

32-1/2

32-15/16

4-1/2

25/32

213

130,000

196,000

1,350

1-3/8*

8-1/4

35-9/18

35-3/4

36-1/4

4-19/16

7/8

193

157,000

235,000

1,630

1-1/2*

9

38-13/18

39

39-1/2

5-38

63/64

177

185,000

280,000

1,940

1-5/8

9-3'4

42

42-1/4

42-7/8

5-7/8

1-1/16

165

216,000

325,000

2,240

1-3/4

10-l/2

45-1/4

45-1/2

46-1/8

6-5/16

1-5/32

153

249,000

380,000

2,590

1-7/8

11-1/4

48-1/2

48-1/4

41-1/2

6-3'4

1-1/4

143

285,000

432,000

2,960

2

12

51-11/18

52

52-3/4

7-3/16

1-5/16

135

318,000

454,000

3,360

2-1/8

12-3/4

54-15/18

55-1/4

56-1/8

7-5/8

1-27/64

125

357,000

510,000

3,790

2-1/4

13-1/2

58-3/18

58-1/2

59-3/8

6-1/8

1-1/2

110

396,000

570,000

4,250

2-3/8

14-1/4

61-7/18

61-3/4

62-3/4

8-9/16

1-9/16

113

440,000

628,000

4,730

2-1/2

15

64-11/18

65

66

9

1-5/8

107

464,000

692,000

5,270

2-5/8

 

67-7/8

66-1/4

69-1/4

9-7/16

1-11/16

101

530,000

758,000

5,620

2-3/4

16-1/2

7l-1/8

71-1/2

72-9/16

9-7/8

1-13/16

97

578,000

626,000

6,410

2-7/8

17-1/4

74-3/8

74-3/4

75-7/8

10-38

1-7/8

93

628,000

897,000

7,020

3

18

77-5/8

78

79-3/16

10-13/16

2

89

679,000

970,000

7,650

3-1/8

16-3/4

80-13/16

61-1/4

62-1/2

11-1/4

2-1/16

87

732,000

1,046,000

6,320

3-1/4

19-1/2

84-1/16

64-1/2

65-3-4

11-1/16

2-1/8

83

787,000

1,124,000

9,010

338

20-1/4

87-5/16

87-3/4

89

12-1/8

2-3/16

79

643,000

1,204,000

9,730

3-1/2

21

90-9/16

91

92-5/16

12-1/8

2-5/16

77

900,000

1,285,000

10,500

3-5/8

21-3/4

93-13/16

94-1/4

95-5/8

12-15/16

2-5/16

73

958,000

1,369,000

11,300

3-3/4

22-1/2

97-1/16

97-1/2

96-7/8

13-3/8

2-15/32

71

1,019,000

1,456,000

12,000

3-7/8

23-1/4

100-1/4

100-3/4

102-3/16

14

2-15/32

69

1,060,000

1,543,000

12,900

4

24

103-1/2

104

106-1/2

14-38

2-S8

67

1,143000

1,632,000

13,700

PER MILITARY SPECIFICATION MIL-C-24633
*PER MILITARY SPECIFICATIONS MIL-C-78096A ( NON-MAGNETIC)

 

OPEN-LINK COAST GUARD BUOY CHAIN

 

open link chain

Common Links

End Links

Weight per 15-Fathom Shot (approx.)

Wide Diameter
A

Length
B

Width
C

Length over Six Links
D

Wire Diameter
E

Length
F

Width
G

Proof Test

Break Test

Inches

mm

1/2

13

3

1-7/8

13

3/4

4-1/4

2-5/8

7500

15000

210

5/8

16

3-3/4

2-1/4

16-1/4

3/4

4-1/2

2-5/8

11500

23000

323

3/4

19

4-1/2

2-5/8

19-1/2

7/8

5-1/4

3-1/8

16000

32000

442

7/8

22

5-1/4

3-1/8

22-3/4

1-1/8

6-3/4

3-7/8

22000

40000

606

1

25

6

3-1/2

26

1-1/4

7-1/2

4-38

29000

56000

780

1-1/8

26

6-3/4

3-7/8

29-1/4

1-1/4

7-1/2

4 38

38500

77000

990

1-1/4

32

7-1/2

4-3/8

32-1/2

1-1/2

9

5-1/4

45500

91000

1245

1-1/2

38

9

5-1/4

39

1-7/8

11-1/4

6-1/2

65500

131000

1762

1-5/8

42

9-3'4

5-11/16

42-1/4

1-7/8

11-1/4

6-1/2

76500

153000

2040

1-3/4

44

10-1/2

6-1/16

45-1/2

2-1/8

12

7-3/16

66500

173000

2370

1-7/8

48

11-1/4

6-1/2

46-3/4

2-1/8

12

7-3/16

100000

200000

2640

All specifications in pounds and inches unless otherwise