DIN933&DIN931 Hexagon Bolts
PDM
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Features of Steel Zinc Plated Hex Head Bolt
Hex Bolts Title:
Grade 8.8 10.9 12.9 black m8 m16 m20 hexagon bolt and nut heavy hex head bolt din933 din931 galvanized
Stainless steel Hex Head Bolt Core Features:
It is usually used in conjunction with nuts for through-hole connections; It can also be directly screwed into parts with internal threads for connection. Its main function is to tightly fix two or more parts together by applying axial clamping force.
DIN 933 and DIN 931 are two types of hexagonal bolts specified in the German standard (DIN), with the main difference being thread length and structural design, suitable for different engineering requirements for fully threaded hexagonal bolts.
DIN 933 full thread hexagonal head bolt
Full threaded design: The entire shaft of the bolt is threaded, extending from below the head to the end of the bolt.
Head shape: Standard hexagonal head, easy to tighten with a wrench or socket.
Thread specification: Suitable for thread diameters ranging from M1.6 to M52.
Performance levels: Common levels include 4.8, 8.8, 10.9, and 12.9, corresponding to different tensile strength and yield strength.
Standard examples: DIN 933, GB/T 5783, ISO 4017.
Materials: Usually carbon steel (such as 4.8 grade, 8.8 grade), stainless steel (such as A2-70, A4-80), or alloy steel.
Surface treatment: galvanizing (blue and white zinc, color zinc), blackening, Dacromet, non electrolytic zinc powder coating, etc., to improve anti-corrosion performance.
DIN 931 Partially Threaded Hexagonal Head Bolt:
Partial thread design: One part of the bolt body has threads, while the other part is a smooth and unthreaded rod.
Head shape: also a standard hexagonal head for easy tightening operation.
Thread specifications: Suitable for thread diameters ranging from M1.6 to M39.
Performance level: Same as DIN 933, commonly available in levels 5.6, 8.8, 10.9, etc.
Corresponding international standards: ISO 4014 "Hexagonal Head Bolts - Partial Threads" basically corresponds to DIN 931.
Material: Similar to DIN 933, including carbon steel, stainless steel, and alloy steel.
Surface treatment: anti-corrosion treatments such as galvanizing and blackening are also used.
| Hexagon Bolts DIN933 | |||||
| Size | S | e | K | ||
| Min | Max | Min | Min | Max | |
| M3 | 5.32 | 5.5 | 6.01 | 1.88 | 2.12 |
| M4 | 6.78 | 7 | 7.66 | 2.68 | 2.92 |
| M5 | 7.78 | 8 | 8.79 | 3.35 | 3.65 |
| M6 | 9.78 | 10 | 11.05 | 3.85 | 4.15 |
| M7 | 10.73 | 11 | 12.12 | 4.65 | 4.95 |
| M8 | 12.73 | 13 | 14.38 | 5.15 | 5.45 |
| M10 | 16.73 | 17 | 18.9 | 6.22 | 6.56 |
| M12 | 18.67 | 19 | 21.1 | 7.32 | 7.68 |
| M14 | 21.67 | 22 | 24.49 | 8.62 | 8.98 |
| M16 | 23.67 | 24 | 26.75 | 9.82 | 10.18 |
| M18 | 26.67 | 27 | 30.14 | 11.28 | 11.72 |
| M20 | 29.67 | 30 | 33.53 | 12.28 | 12.72 |
| M22 | 31.61 | 32 | 35.72 | 13.78 | 14.22 |
| M24 | 35.38 | 36 | 39.98 | 14.78 | 15.22 |
| M27 | 40 | 41 | 45.2 | 16.65 | 17.35 |
| M30 | 45 | 46 | 50.85 | 18.28 | 19.12 |
| M33 | 49 | 50 | 55.37 | 20.58 | 21.42 |
| M36 | 53.38 | 55 | 60.79 | 22.08 | 22.92 |
| M39 | 58.8 | 60 | 66.44 | 24.58 | 25.42 |
| Hexagon Bolt DIN931 | ||||||||||
| Size | b | s | e | k | ds | |||||
| (1) | (2) | (3) | Min | Max | Min | Min | Max | Min | Max | |
| M3 | 12 | - | - | 5.32 | 5.5 | 6.01 | 1.88 | 2.12 | 2.86 | 3 |
| M4 | 14 | - | - | 6.78 | 7 | 7.66 | 2.68 | 2.92 | 3.82 | 4 |
| M5 | 16 | 22 | - | 7.78 | 8 | 8.79 | 3.35 | 3.65 | 4.82 | 5 |
| M6 | 18 | 24 | - | 9.78 | 10 | 11.05 | 3.85 | 4.15 | 5.82 | 6 |
| M7 | 20 | 26 | - | 10.73 | 11 | 12.12 | 4.65 | 4.95 | 6.78 | 7 |
| M8 | 22 | 28 | - | 12.73 | 13 | 14.38 | 5.15 | 5.45 | 7.78 | 8 |
| M10 | 26 | 32 | 45 | 16.73 | 17 | 18.9 | 6.22 | 6.58 | 9.78 | 10 |
| M12 | 30 | 36 | 49 | 18.67 | 19 | 21.1 | 7.32 | 7.68 | 11.73 | 12 |
| M14 | 34 | 40 | 53 | 21.67 | 22 | 24.49 | 8.62 | 8.98 | 13.73 | 14 |
| M16 | 38 | 44 | 57 | 23.67 | 24 | 26.75 | 9.82 | 10.18 | 15.73 | 16 |
| M18 | 42 | 48 | 61 | 26.67 | 27 | 30.14 | 11.28 | 11.72 | 17.73 | 18 |
| M20 | 46 | 52 | 65 | 29.67 | 30 | 33.53 | 12.28 | 12.72 | 19.67 | 20 |
| M22 | 50 | 56 | 69 | 31.61 | 32 | 35.72 | 13.78 | 14.22 | 21.67 | 22 |
| M24 | 54 | 60 | 73 | 35.38 | 36 | 39.98 | 14.78 | 15.22 | 23.67 | 24 |
| M27 | 60 | 66 | 79 | 40 | 41 | 45.2 | 16.65 | 17.35 | 26.48 | 27 |
| M30 | 66 | 72 | 85 | 45 | 46 | 50.85 | 18.28 | 19.12 | 29.48 | 30 |
| M33 | 72 | 78 | 91 | 49 | 50 | 55.37 | 20.58 | 21.42 | 32.38 | 33 |
| M36 | 78 | 84 | 97 | 53.38 | 55 | 60.79 | 22.08 | 22.92 | 35.38 | 36 |
| M39 | 84 | 90 | 103 | 58.8 | 60 | 66.44 | 24.58 | 25.42 | 38.38 | 39 |
Notes:(1)ForL ≦125mm (2) For 125 <L≦ 200mm (3)ForL> 200mm
Application scenarios of DIN933:
Universal connection: Suitable for most situations that require bolted connections, especially when the thickness of the connected component is uncertain or needs to be adjusted.
Cooperate with nuts: often used in conjunction with nuts, providing clamping force through threaded engagement.
Blind hole connection: suitable for screwing into threaded holes (blind holes).
Application scenarios of DIN931:
Anti shear connection: The smooth rod segment is matched with precision holes (such as hinged holes) to effectively withstand shear forces, while the threaded segment provides clamping force.
Accurate positioning: The light rod segment fits tightly with the hole, reducing gaps and suitable for situations that require precise positioning.
Fixed thickness connection: When the thickness of the connected part is known and fixed, the length of the optical rod segment is exactly equal to the total thickness, and the force is more reasonable.
Installation Process - Standardized Operation:
Cleaning: Before installation, clean the threads of bolts and nuts, as well as the oil stains, iron filings, and other impurities in the connecting holes.
Alignment and Insertion: Insert the bolt vertically into the hole, ensuring that it is not skewed. If insertion is difficult, check if the holes are aligned or if there are burrs, and do not forcefully tap.
Use appropriate gaskets:
Using flat washers under the bolt head and nut can distribute pressure and protect the surface of the connected part.
Initial tightening to direct tightening: First, manually tighten the nut several times to ensure smooth thread engagement. If the tactile resistance is too high, the thread should be removed and checked for damage. The purpose of tightening is to generate sufficient and precise pre tightening force (clamping force) on the bolt, which is the foundation of bolt operation.
Tool usage: Prioritize using a torque wrench. Avoid using adjustable wrenches or pliers to prevent damage to bolt heads or inaccurate torque.
Follow the correct tightening sequence: For flanges or cover plates connected by multiple bolts, a diagonal, cross, and step-by-step tightening sequence should be used to ensure uniform force distribution and prevent part deformation.
Features of Steel Zinc Plated Hex Head Bolt
Hex Bolts Title:
Grade 8.8 10.9 12.9 black m8 m16 m20 hexagon bolt and nut heavy hex head bolt din933 din931 galvanized
Stainless steel Hex Head Bolt Core Features:
It is usually used in conjunction with nuts for through-hole connections; It can also be directly screwed into parts with internal threads for connection. Its main function is to tightly fix two or more parts together by applying axial clamping force.
DIN 933 and DIN 931 are two types of hexagonal bolts specified in the German standard (DIN), with the main difference being thread length and structural design, suitable for different engineering requirements for fully threaded hexagonal bolts.
DIN 933 full thread hexagonal head bolt
Full threaded design: The entire shaft of the bolt is threaded, extending from below the head to the end of the bolt.
Head shape: Standard hexagonal head, easy to tighten with a wrench or socket.
Thread specification: Suitable for thread diameters ranging from M1.6 to M52.
Performance levels: Common levels include 4.8, 8.8, 10.9, and 12.9, corresponding to different tensile strength and yield strength.
Standard examples: DIN 933, GB/T 5783, ISO 4017.
Materials: Usually carbon steel (such as 4.8 grade, 8.8 grade), stainless steel (such as A2-70, A4-80), or alloy steel.
Surface treatment: galvanizing (blue and white zinc, color zinc), blackening, Dacromet, non electrolytic zinc powder coating, etc., to improve anti-corrosion performance.
DIN 931 Partially Threaded Hexagonal Head Bolt:
Partial thread design: One part of the bolt body has threads, while the other part is a smooth and unthreaded rod.
Head shape: also a standard hexagonal head for easy tightening operation.
Thread specifications: Suitable for thread diameters ranging from M1.6 to M39.
Performance level: Same as DIN 933, commonly available in levels 5.6, 8.8, 10.9, etc.
Corresponding international standards: ISO 4014 "Hexagonal Head Bolts - Partial Threads" basically corresponds to DIN 931.
Material: Similar to DIN 933, including carbon steel, stainless steel, and alloy steel.
Surface treatment: anti-corrosion treatments such as galvanizing and blackening are also used.
| Hexagon Bolts DIN933 | |||||
| Size | S | e | K | ||
| Min | Max | Min | Min | Max | |
| M3 | 5.32 | 5.5 | 6.01 | 1.88 | 2.12 |
| M4 | 6.78 | 7 | 7.66 | 2.68 | 2.92 |
| M5 | 7.78 | 8 | 8.79 | 3.35 | 3.65 |
| M6 | 9.78 | 10 | 11.05 | 3.85 | 4.15 |
| M7 | 10.73 | 11 | 12.12 | 4.65 | 4.95 |
| M8 | 12.73 | 13 | 14.38 | 5.15 | 5.45 |
| M10 | 16.73 | 17 | 18.9 | 6.22 | 6.56 |
| M12 | 18.67 | 19 | 21.1 | 7.32 | 7.68 |
| M14 | 21.67 | 22 | 24.49 | 8.62 | 8.98 |
| M16 | 23.67 | 24 | 26.75 | 9.82 | 10.18 |
| M18 | 26.67 | 27 | 30.14 | 11.28 | 11.72 |
| M20 | 29.67 | 30 | 33.53 | 12.28 | 12.72 |
| M22 | 31.61 | 32 | 35.72 | 13.78 | 14.22 |
| M24 | 35.38 | 36 | 39.98 | 14.78 | 15.22 |
| M27 | 40 | 41 | 45.2 | 16.65 | 17.35 |
| M30 | 45 | 46 | 50.85 | 18.28 | 19.12 |
| M33 | 49 | 50 | 55.37 | 20.58 | 21.42 |
| M36 | 53.38 | 55 | 60.79 | 22.08 | 22.92 |
| M39 | 58.8 | 60 | 66.44 | 24.58 | 25.42 |
| Hexagon Bolt DIN931 | ||||||||||
| Size | b | s | e | k | ds | |||||
| (1) | (2) | (3) | Min | Max | Min | Min | Max | Min | Max | |
| M3 | 12 | - | - | 5.32 | 5.5 | 6.01 | 1.88 | 2.12 | 2.86 | 3 |
| M4 | 14 | - | - | 6.78 | 7 | 7.66 | 2.68 | 2.92 | 3.82 | 4 |
| M5 | 16 | 22 | - | 7.78 | 8 | 8.79 | 3.35 | 3.65 | 4.82 | 5 |
| M6 | 18 | 24 | - | 9.78 | 10 | 11.05 | 3.85 | 4.15 | 5.82 | 6 |
| M7 | 20 | 26 | - | 10.73 | 11 | 12.12 | 4.65 | 4.95 | 6.78 | 7 |
| M8 | 22 | 28 | - | 12.73 | 13 | 14.38 | 5.15 | 5.45 | 7.78 | 8 |
| M10 | 26 | 32 | 45 | 16.73 | 17 | 18.9 | 6.22 | 6.58 | 9.78 | 10 |
| M12 | 30 | 36 | 49 | 18.67 | 19 | 21.1 | 7.32 | 7.68 | 11.73 | 12 |
| M14 | 34 | 40 | 53 | 21.67 | 22 | 24.49 | 8.62 | 8.98 | 13.73 | 14 |
| M16 | 38 | 44 | 57 | 23.67 | 24 | 26.75 | 9.82 | 10.18 | 15.73 | 16 |
| M18 | 42 | 48 | 61 | 26.67 | 27 | 30.14 | 11.28 | 11.72 | 17.73 | 18 |
| M20 | 46 | 52 | 65 | 29.67 | 30 | 33.53 | 12.28 | 12.72 | 19.67 | 20 |
| M22 | 50 | 56 | 69 | 31.61 | 32 | 35.72 | 13.78 | 14.22 | 21.67 | 22 |
| M24 | 54 | 60 | 73 | 35.38 | 36 | 39.98 | 14.78 | 15.22 | 23.67 | 24 |
| M27 | 60 | 66 | 79 | 40 | 41 | 45.2 | 16.65 | 17.35 | 26.48 | 27 |
| M30 | 66 | 72 | 85 | 45 | 46 | 50.85 | 18.28 | 19.12 | 29.48 | 30 |
| M33 | 72 | 78 | 91 | 49 | 50 | 55.37 | 20.58 | 21.42 | 32.38 | 33 |
| M36 | 78 | 84 | 97 | 53.38 | 55 | 60.79 | 22.08 | 22.92 | 35.38 | 36 |
| M39 | 84 | 90 | 103 | 58.8 | 60 | 66.44 | 24.58 | 25.42 | 38.38 | 39 |
Notes:(1)ForL ≦125mm (2) For 125 <L≦ 200mm (3)ForL> 200mm
Application scenarios of DIN933:
Universal connection: Suitable for most situations that require bolted connections, especially when the thickness of the connected component is uncertain or needs to be adjusted.
Cooperate with nuts: often used in conjunction with nuts, providing clamping force through threaded engagement.
Blind hole connection: suitable for screwing into threaded holes (blind holes).
Application scenarios of DIN931:
Anti shear connection: The smooth rod segment is matched with precision holes (such as hinged holes) to effectively withstand shear forces, while the threaded segment provides clamping force.
Accurate positioning: The light rod segment fits tightly with the hole, reducing gaps and suitable for situations that require precise positioning.
Fixed thickness connection: When the thickness of the connected part is known and fixed, the length of the optical rod segment is exactly equal to the total thickness, and the force is more reasonable.
Installation Process - Standardized Operation:
Cleaning: Before installation, clean the threads of bolts and nuts, as well as the oil stains, iron filings, and other impurities in the connecting holes.
Alignment and Insertion: Insert the bolt vertically into the hole, ensuring that it is not skewed. If insertion is difficult, check if the holes are aligned or if there are burrs, and do not forcefully tap.
Use appropriate gaskets:
Using flat washers under the bolt head and nut can distribute pressure and protect the surface of the connected part.
Initial tightening to direct tightening: First, manually tighten the nut several times to ensure smooth thread engagement. If the tactile resistance is too high, the thread should be removed and checked for damage. The purpose of tightening is to generate sufficient and precise pre tightening force (clamping force) on the bolt, which is the foundation of bolt operation.
Tool usage: Prioritize using a torque wrench. Avoid using adjustable wrenches or pliers to prevent damage to bolt heads or inaccurate torque.
Follow the correct tightening sequence: For flanges or cover plates connected by multiple bolts, a diagonal, cross, and step-by-step tightening sequence should be used to ensure uniform force distribution and prevent part deformation.
