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Inner Hexagon Bolt

Your Professional Inner Hexagon Bolt Supplier

 

Haiyan Huashen Auto Parts Technology Co., Ltd. is located in Jiaxing, Zhejiang—a standard parts distribution center with convenient transportation and logistics. Our company has strong technical capabilities and specializes in producing various specifications and types of flange bolts, non-standard parts, nuts, hex bolts, double-headed bolts, barrel clamp bolts, and other related products.

 

 
 
Why Choose Us

Design and Customization with Innovative Technology

We have a professional design team that supports development based on customer drawings and samples. Customers can provide drawings or specific requirements, and our team will quickly respond with customized solutions to meet unique needs. Using CAE simulation analysis to evaluate the structure before forming parts helps predict the design's feasibility, shortens the development cycle, reduces trial-and-error costs, and ensures product performance and quality.

High-Quality Materials and Excellent Craftsmanship

We carefully select and process materials according to performance requirements. With exquisite craftsmanship and refined production processes, we pursue perfection in every detail to ensure customers receive high-quality products.

 

 

 

Strict Quality Control with Full Traceability

Our company is equipped with advanced testing equipment and enforces strict quality control at every stage of production. Multiple inspections ensure product quality before leaving the factory. We implement batch management and record incoming material numbers for traceability. This improves management efficiency and provides customers with reliable quality assurance.

Worry-Free After-Sales Service

Customer satisfaction is our top priority. We offer comprehensive after-sales services, including product consultation, technical support, and maintenance. We are committed to providing timely and professional assistance, firmly believing that customer satisfaction represents our greatest success.

 

 

Inner Hexagon Bolt

 

 

Hex socket head bolts, also known as Allen bolts, cylindrical hex socket head cap screws, hex socket head cap screws, cup head screws. Hexagon socket screws are made of stainless steel, carbon steel, alloy steel and so on.

 

Product Description

 

Specification Category

Values/Range

Product Name

Hex Bolt

Material

Stainless Steel

Grade

4.6, 5.6, 8.8, 10.9, or higher (as per application)

Thread Type

UNC (Unified National Coarse), UNF (Unified National Fine), Metric

Diameter

Common sizes: #4 to 1/4 in, M6 to M30

Length

Varies based on application requirements

Thread Length

Varies, typically specified by customer

Head Style

Hex Head (Hexagonal)

Drive Type

Wrench (spanner)

Surface Treatment

Zinc Plated, Galvanized, Black Oxide, Plain (uncoated), Powder Coated

Corrosion Resistance

Rated based on surface treatment

Load Capacity

Varies with grade and dimensions

Temperature Range

Typically -40 to 300 °C (-40 to 572 °F)

Certifications

ISO 9001, ASTM A307, DIN 933, etc.

Compliance

CE Marking, RoHS Compliance, etc.

Packaging

Bulk, Boxes, Crates, Bags

Shipping Options

Standard Freight, Express Delivery, Air, Sea

 

Specification Of Hex Socket Bolt

 

1

 

D

M1.4

M1.6

M2

M2.5

M3

M4

M5

M6

M8

M10

M12

(M14)

M16

(M18)

M20

P

Coarse

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 1

-

-

-

-

-

-

-

-

1

1.25

1.25

1.5

1.5

1.5

1.5
 

Fine 2

-

-

-

-

-

-

-

-

-

1

1.5

-

-

2

2

Dk

Max

2.6

3

3.8

4.5

5.5

7

8.5

10

13

16

18

21

24

27

30
 

Max for knurled head

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

Da

Max

1.8

2

2.6

3.1

3.6

4.7

5.7

6.8

9.2

11.2

13.7

15.7

17.7

20.2

22.4

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

E

Min

1.5

1.73

1.73

2.3

2.87

3.44

4.58

5.72

6.86

9.15

11.43

13.72

16

16

19.44

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

W

Min

0.5

0.55

0.55

0.85

1.15

1.4

1.9

2.3

3

4

4.8

5.8

6.8

7.8

8.6

 

D

(M22)

M24

(M27)

M30

(M33)

M36

M42

M48

M56

M64

M72

M80

M90

M100

P

Coarse

2.5

3

3

3.5

3.5

4

4.5

5

5.5

6

6

6

6

6
 

Fine 1

1.5

2

2

2

2

3

3

3

4

4

4

4

4

4
 

Fine 2

2

-

-

-

-

-

-

-

-

-

-

-

-

-

Dk

Max

33

36

40

45

50

54

63

72

84

96

108

120

135

150
 

Max for knurled head

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

Da

Max

24.4

26.4

30.4

33.4

36.4

39.4

45.5

52.6

63

71

79

87

97

107

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

E

Min

19.44

21.73

21.73

25.15

27.43

30.85

36.57

41.13

46.83

52.53

62.81

74.21

85.61

97.04

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

55.26

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

W

Min

9.4

10.4

11.9

13.1

13.5

15.3

16.3

17.5

19

22

25

27

32

34

 

DIN912 Hexagonal Bolt

 

Types Of Hex Socket Bolt

Cylindrical head hex socket bolts
Cylindrical head hex socket bolts are also called cylindrical head socket head angle machine screws, which have high connection strength, but they need to use corresponding socket head angle wrenches when installing and disassembling. It is the most widely used bolt on various machine tools and their accessories.


Countersunk head hex socket bolt
The Countersunk head allen bolt is also called the countersunk head hex socket head machine screw. It has a high connection strength, is easy to fasten and disassemble, and is not easy to slip. However, a corresponding hexal wrench is required for installation and disassembly. It is often used in places where the surface of mechanical parts cannot have protrusions.


Pan head hex socket bolt
Pan head hex socket bolt are also called pan head hex socket head machine screws. The compression surface of pan head hex socket head bolts is larger than that of cylindrical head and countersunk head machine screws, and the connection contact surface is large. It is also necessary to use corresponding screws when installing and disassembling. Allen wrench. It is mainly used for the fastening connection of aluminum profiles.


Hex socket shoulder screw (plug screw)
Shoulder screws are also called plug screws, stop screws, stop bolts, brake bolts, etc.; shoulder screws are used in conjunction with bolt pull rods, and are mainly used to control the fixed mold seat plate and runner push plate in the three-plate mold. Mold accessories for the mold opening stroke between the mold plate and the fixed mold template.


Hex Socket Set Screws
The allen head set screws, also known as the positioning screw, is a screw specially used to fix the relative position of the parts. When in use, the set screw is screwed into the screw hole of the part to be fixed, and the end of the screw is pressed against the On the surface of another piece, even if the former piece is fixed to the latter piece. Slotted and hex socket set screws are used on parts where the nail head is not allowed to be exposed.

 

 

Inner Hexagon Bolt Material

At present, there are three main materials for hexagon socket screws on the market: carbon steel, stainless steel, and copper.

 

Carbon steel. We distinguish low carbon steel, medium carbon steel and high carbon steel and alloy steel by the carbon content in the carbon steel material.

 

Low carbon steel C%≤0.25% is usually called A3 steel in China. Foreign countries are basically called 1008, 1015, 1018, 1022 and so on. It is mainly used for products without hardness requirements such as grade 4.8 bolts, grade 4 nuts, and small screws (Note: 1022 material is mainly used for drilling screws).

 

Medium carbon steel 0.25% 0.45%. It is basically not used in the market at present.

 

Alloy steel: Add alloy elements to ordinary carbon steel to increase some special properties of steel: such as 35, 40 chromium molybdenum, SCM435, 10B38. Fangsheng screws mainly use SCM435 chrome-molybdenum alloy steel, the main components are C, Si, Mn, P, S, Cr, Mo.

Inside Hexagonal Bolt

 

 

FAQ

 

 

Q: When would you use a socket head cap screw?

A: Socket head cap screws are typically used in machine parts, die fixturing, and clamping. Socket head cap screws are ideal for applications in which there is not enough space to maneuver wrenches or sockets.

Q: What is the difference between a bolt and a cap screw?

A: The most basic difference between a cap screw and a bolt is the way in which these fasteners are installed. Technically, a bolt is installed by turning a nut to tighten the fastener, while a cap screw is installed by turning the head of the bolt to assemble and tighten

Q: Do socket head cap screws need washers?

A: When you’re designing bolted joints, always use a washer under the head of the bolt to prevent galling between the bolt head and the material you’re bolting down.

Q: Can standard lock washers be used with cap screws?

A: Use regularly for Grade 2 hex cap screws and high strength alloy steel for Grade 5 and 8 hex cap screws. Tooth lock washers—internal, external, internal-external, and countersunk external—create a ratchet action by biting into the nut or screw head and the surface it contacts

Q: How are socket head cap screws measured?

A: Length is measured from the point at which the head sits flat with the surface, to the tip of the threads. Hex, pan, truss, button, socket cap, and round head screws are measured from right under the head to the end of the threads.

We're well-known as one of the leading inner hexagon bolt manufacturers and suppliers in China. Please feel free to wholesale customized inner hexagon bolt made in China here from our factory. For quotation, contact us now.

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