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OEM China Round Head Bolts - DIN912 Hex Socket Cup Head Screw Grade 12.9 Black Oxide – Hongji

OEM China Round Head Bolts - DIN912 Hex Socket Cup Head Screw Grade 12.9 Black Oxide – Hongji

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"Quality to start with, Honesty as base, Sincere company and mutual profit" is our idea, as a way to build constantly and pursue the excellence for Hex Cap Screw , Bolts Nuts Washers , M6 X 50mm Allen Bolt , By 10 years effort, we attract customers by competitive price and excellent service. Moreover, it's our honest and sincerity, which help us always be clients' first choice.
OEM China Round Head Bolts - DIN912 Hex Socket Cup Head Screw Grade 12.9 Black Oxide – Hongji Detail:

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DIN912 Hex Socket Cup Head Screw Grade 12.9 Black Oxide
DIN912 Hex Socket Cup Head Screw Grade 12.9 Black Oxide5

d

M1.4

M1.6

M2

M2.5

M3

M4

M5

M6

M8

M10

M12

(M14)

M16

(M18)

M20

P

Coarse thread

0.3

0.35

0.4

0.45

0.5

0.7

0.8

1

1.25

1.5

1.75

2

2

2.5

2.5

Fine thread

/

/

/

/

/

/

/

/

1

1.25

1.5

1.5

1.5

2

2

Very Fine thread

/

/

/

/

/

/

/

/

/

1

1.25

/

/

1.5

1.5

b

Reference value

14

15

16

17

18

20

22

24

28

32

36

40

44

48

52

dk

Max (Smooth)

2.6

3

3.8

4.5

5.5

7

8.5

10

13

16

18

21

24

27

30

Max (Knurl*)

2.74

3.14

3.98

4.68

5.68

7.22

8.72

10.22

13.27

16.27

18.27

21.33

24.33

27.33

30.33

Min

2.46

2.86

3.62

4.32

5.32

6.78

8.28

9.78

12.73

15.73

17.73

20.67

23.67

26.67

29.67

ds

Max

1.4

1.6

2

2.5

3

4

5

6

8

10

12

14

16

18

20

Min

1.26

1.46

1.86

2.36

2.86

3.82

4.82

5.82

7.78

9.78

11.73

13.73

15.73

17.73

19.67

k

Max

1.4

1.6

2

2.5

3

4

5

6

8

10

12

14

16

18

20

Min

1.26

1.46

1.86

2.36

2.86

3.82

4.82

5.7

7.64

9.64

11.57

13.57

15.57

17.57

19.48

s

Nominal

1.3

1.5

1.5

2

2.5

3

4

5

6

8

10

12

14

14

17

Min

1.32

1.52

1.52

2.02

2.52

3.02

4.02

5.02

6.02

8.025

10.025

12.032

14.032

14.032

17.05

Max

1.36

1.56

1.56

2.06

2.58

3.08

4.095

5.14

6.14

8.175

10.175

12.212

14.212

14.212

17.23

t

Min

0.6

0.7

1

1.1

1.3

2

2.5

3

4

5

6

7

8

9

10

Thread length=b

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

d

(M22)

M24

(M27)

M30

(M33)

M36

M42

M48

M56

M64

M72

M80

M90

M100

P

Coarse thread

2.5

3

3

3.5

3.5

4

4.5

5

5.5

6

6

6

6

6

Fine thread

2

2

2

2

2

3

3

3

4

4

4

4

4

4

Very Fine thread

1.5

/

/

/

/

/

/

/

/

/

/

/

/

/

b

Reference value

56

60

66

72

78

84

96

108

124

140

156

172

192

212

dk

Max (Smooth)

33

36

40

45

50

54

63

72

84

96

108

120

135

150

Max (Knurl*)

33.39

36.39

40.39

45.39

50.39

54.46

63.46

72.46

84.54

96.54

108.54

120.54

135.63

150.63

Min

32.61

35.61

39.61

44.61

49.61

53.54

62.54

71.54

83.46

95.46

107.46

119.46

134.37

149.37

ds

Max

22

24

27

30

33

36

42

48

56

64

72

80

90

100

Min

21.67

23.67

26.67

29.67

32.61

35.61

41.61

47.61

55.54

63.54

71.54

79.54

89.46

99.46

k

Max

22

24

27

30

33

36

42

48

56

64

72

80

90

100

Min

21.48

23.48

26.48

29.48

32.38

35.38

41.38

47.38

56.26

63.26

71.26

79.26

89.13

99.13

s

Nominal

17

19

19

22

24

27

32

36

41

46

55

65

75

85

Min

17.05

19.065

19.065

22.065

24.065

27.065

32.08

36.08

41.08

46.08

55.1

65.1

75.1

85.12

Max

17.23

19.275

19.275

22.275

24.275

27.275

32.33

36.33

41.33

46.33

55.4

65.4

75.4

85.47

t

Min

11

12

13.5

15.5

18

19

24

28

34

38

43

48

54

60

Thread length=b

-

-

-

-

-

-

-

-

-

-

-

-

-

-

Detail drawing

DIN912 Hex Socket Cup01
DIN912 Hex Socket Cup02
DIN912 Hex Socket Cup03
DIN912 Hex Socket Cup04

The hexagon socket head bolts are classified according to the hardness, tensile strength, yield strength, etc. of the screw wire, that is, the level of the hexagon socket head bolts, and what level the hexagon socket head bolts are. Different product materials are required to have different grades of hexagon socket head cap bolts corresponding to them. All hexagon socket head cap bolts have the following grades:

Hexagon socket head bolts are divided into ordinary and high-strength according to the strength of the grade. Ordinary hexagon socket head bolts refer to grade 4.8, and high-strength socket head bolts refer to grades 8.8 and above, including grades 10.9 and 12.9. Grade 12.9 hexagon socket head cap screws generally refer to knurled, natural black hexagon socket head cap screws with oil.

The performance grades of hexagon socket head cap bolts for steel structure connection are divided into more than 10 grades, such as 3.6, 4.6, 4.8, 5.6, 6.8, 8.8, 9.8, 10.9, 12.9, etc. Among them, the bolts of grade 8.8 and above are made of low-carbon alloy steel or medium-carbon steel. After heat treatment (quenching and tempering), they are generally called high-strength bolts, and the rest are generally called ordinary bolts. The bolt performance grade label consists of two parts of numbers, which represent the nominal tensile strength value and yield ratio of the bolt material respectively.

Packing

The packaging of the socket head cap screws is the box and the outer box by default.

Packaging and delivery
Packaging and delivery1
Packaging and delivery2
Packaging and delivery4
Packaging and deliver3
Packaging and delivery3

About us

Yongnian Hongji
ce3
cer2
ce1
ce6
ce5
ce4

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Product detail pictures:

OEM China Round Head Bolts - DIN912 Hex Socket Cup Head Screw Grade 12.9 Black Oxide  –  Hongji detail pictures

OEM China Round Head Bolts - DIN912 Hex Socket Cup Head Screw Grade 12.9 Black Oxide  –  Hongji detail pictures

OEM China Round Head Bolts - DIN912 Hex Socket Cup Head Screw Grade 12.9 Black Oxide  –  Hongji detail pictures

OEM China Round Head Bolts - DIN912 Hex Socket Cup Head Screw Grade 12.9 Black Oxide  –  Hongji detail pictures

OEM China Round Head Bolts - DIN912 Hex Socket Cup Head Screw Grade 12.9 Black Oxide  –  Hongji detail pictures


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We provide fantastic energy in top quality and advancement,merchandising,gross sales and marketing and operation for OEM China Round Head Bolts - DIN912 Hex Socket Cup Head Screw Grade 12.9 Black Oxide – Hongji , The product will supply to all over the world, such as: Munich, Albania, Liverpool, Due to the stability of our items, timely supply and our sincere service, we are able to sell our merchandise not only over the domestic market, but also exported to countries and regions, including the Middle East, Asia, Europe and other countries and regions. At the same time, we also undertake OEM and ODM orders. We will do our best to serve your company, and establish a successful and friendly cooperation with you.
  • The company's products can meet our diverse needs, and the price is cheap, the most important is that the quality is also very nice.
    5 Stars By Geraldine from Houston - 2018.02.04 14:13
    Good quality and fast delivery, it's very nice. Some products have a little bit problem, but the supplier replaced timely, overall, we are satisfied.
    5 Stars By Edith from Turin - 2017.08.15 12:36
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