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China Suppliers Factory 8.8s External Hexagonal Bolt DIN M8-M16 for Various Applications
| Thread specifications d |
M10 | M12 | M14 | M16 | M18 | M20 | M22 | M24 | |
| P | Pitch | 1.50 | 1.75 | 2.0 | 2.0 | 2.5 | 2.5 | 2.5 | 3 |
| b | L≤125 | 26 | 30 | 34 | 38 | 42 | 46 | 50 | 54 |
| 125＜L≤200 | 32 | 36 | 40 | 44 | 48 | 52 | 56 | 60 | |
| L＞200 | / | / | / | 57 | 61 | 65 | 69 | 73 | |
| ds | Max | 10 | 12 | 14 | 16 | 18 | 20 | 22 | 24 |
| Min | 9.64 | 11.57 | 13.57 | 15.57 | 17.57 | 19.48 | 21.48 | 23.48 | |
| e | Min | 19.68 | 22.58 | 25.94 | 29.3 | 32.66 | 36.96 | 39.2 | 44.8 |
| k | Max | 6.69 | 7.79 | 9.09 | 10.29 | 11.85 | 12.85 | 14.35 | 15.35 |
| Min | 6.11 | 7.21 | 8.51 | 9.71 | 11.15 | 12.15 | 13.65 | 14.65 | |
| s | Max | 18 | 21 | 24 | 27 | 30 | 34 | 36 | 41 |
| Min | 17.57 | 20.16 | 23.16 | 26.16 | 29.16 | 33 | 35 | 40 | |
| 1,000 pieces of steel weigh ≈ kg | - | - | - | - | - | - | - | - | |
| Thread specifications d |
M27 | M30 | M33 | M36 | M39 | M42 | M45 | M48 | |
| P | Pitch | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 |
| b | L≤125 | 60 | 66 | 72 | 78 | 84 | 90 | 96 | 102 |
| 125＜L≤200 | 66 | 72 | 78 | 84 | 90 | 96 | 102 | 108 | |
| L＞200 | 79 | 85 | 91 | 97 | 103 | 109 | 115 | 121 | |
| ds | Max | 27 | 30 | 33 | 36 | 39 | 42 | 45 | 48 |
| Min | 26.48 | 29.48 | 32.38 | 35.38 | 38.38 | 41.38 | 44.38 | 47.38 | |
| e | Min | 50.4 | 54.9 | 60.3 | 65.9 | 71.5 | 71.5 | 76.3 | 81.9 |
| Min | Min | 17.35 | 19.12 | 21.42 | 22.92 | 25.42 | 26.42 | 28.42 | 30.42 |
| Min | Min | 16.65 | 18.28 | 20.58 | 22.08 | 24.58 | 25.58 | 27.58 | 29.58 |
| s | Max | 46 | 50 | 55 | 60 | 65 | 65 | 70 | 75 |
| Min | 45 | 49 | 53.8 | 58.8 | 63.8 | 63.8 | 68.1 | 73.1 | |
| 1,000 pieces of steel weigh ≈ kg | - | - | - | - | - | - | - | - | |
External hexagonal bolts are a common type of mechanical fastener, mainly used for connecting and fixing mechanical equipment.
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External hexagonal bolts are commonly used for:
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1Connecting Components The outer hexagonal bolt fixes multiple components together through the action of torque, forming a whole.
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2Load Bearing Due to its high-strength design, the outer hexagonal bolt can withstand large loads and shear forces, and is not easy to break or loosen, ensuring the firmness of the connection.
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3Easy Installation No special fixtures or tools are required during installation, it can be completed with a wrench or wrench, and the installation speed is fast, which can improve production efficiency.
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4Wide Application Range External hexagonal bolts are suitable for various connection situations, such as heavy machinery, construction, and bridge engineering, and can meet various connection requirements.
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Frequently Asked Questions
Q
What is an external hexagonal bolt?
A
An external hexagonal bolt is a common mechanical fastener featuring a hexagonal head, used to connect and fix mechanical components through torque action. It is widely used across machinery, construction, and engineering industries.
Q
What thread sizes are available for external hexagonal bolts?
A
External hexagonal bolts are available in a wide range of standard metric thread sizes, from M10 up to M48, including M10, M12, M14, M16, M18, M20, M22, M24, M27, M30, M33, M36, M39, M42, M45, and M48.
Q
How does the thread pitch vary across different bolt sizes?
A
The thread pitch increases with bolt diameter. For example, M10 has a pitch of 1.50 mm, M12 is 1.75 mm, M14–M16 are 2.0 mm, M18–M24 are 2.5 mm, and M27 through M48 all share a standard pitch of 3.0 mm.
Q
How is the threaded length (b) determined for an external hexagonal bolt?
A
The threaded length (b) depends on the total bolt length (L). Three ranges apply: L ≤ 125 mm, 125 mm < L ≤ 200 mm, and L > 200 mm. Each range specifies a different threaded length, which also increases with the nominal bolt diameter.
Q
What tools are needed to install external hexagonal bolts?
A
No special fixtures are required. A standard wrench or spanner is sufficient for installation. This ease of use allows for fast assembly and helps improve overall production efficiency.
Q
In which industries are external hexagonal bolts most commonly used?
A
External hexagonal bolts are widely used in heavy machinery manufacturing, construction, and bridge engineering. Their high-strength design and broad size range make them suitable for virtually any structural or mechanical connection requirement.