Vimal Industrial Corporation supplies DIN 931 Hex Head Bolts designed for mechanical and structural applications where secure fastening and accurate assembly are required. Manufactured as per DIN specifications, these partially threaded bolts feature a hexagonal head with an unthreaded shank section that supports better load distribution in demanding applications.
The partial threading design of DIN 931 Hex Head Bolts makes them suitable for joints exposed to shear forces, vibration, and continuous mechanical stress. The smooth shank area helps improve alignment between connected components, while the hexagonal head allows easy tightening using standard tools for efficient installation.
These bolts are commonly used in machinery assembly, industrial fabrication, construction frameworks, automotive applications, and equipment manufacturing. Available in stainless steel variants, they are suitable for applications where corrosion resistance, dimensional accuracy, and long-term performance are required.
With experience in industrial fastener supply, Vimal Industrial Corporation provides DIN 931 Bolts in different sizes and specifications to support diverse project requirements. Our focus is on delivering suitable fastening solutions with consistent availability and application-based support.
DIN 931 Hex Head Bolts are preferred for applications that require secure fastening along with accurate positioning of connected components. Their partially threaded design, featuring a longer unthreaded shank, helps maintain better contact between assembled parts and makes them suitable for joints where load transfer and stability are important.
The hexagonal head design allows convenient installation and tightening using standard tools, making these bolts a practical choice for industrial assembly work. From machinery setups to structural connections, DIN 931 Bolts are used where proper fitment, consistent dimensions, and dependable fastening are required.
Vimal Industrial Corporation supplies DIN 931 Hex Head Bolts from trusted sources, including APL Fasteners, to meet varied industrial requirements. Available in stainless steel options, these bolts are suitable for applications where corrosion resistance and long-term service life are important. We support OEMs, contractors, and industrial buyers with application-focused fastening solutions and consistent supply support.
DIN 931 hex bolts are engineered for strength, alignment, and durability, making them suitable for applications that demand high preload, structural stability, and reliable joint integrity. Their partially threaded design improves shear strength, while the hex head allows for easy torque application during assembly.
Common Applications Include:
Steel Structure Fabrication
Widely used in steel columns, beams, and truss connections for structural frameworks.
Heavy Machinery Assembly
Ideal for bolting together machine frames, housings, and base plates under high stress.
Construction and Infrastructure Projects
Used in bridges, metro projects, power plants, and building construction for critical joints.
Wind and Renewable Energy Installations
Essential for anchoring turbine components and modular support structures.
Automotive and Transport Manufacturing
Applied in chassis, frame rails, and suspension assemblies requiring high-tensile bolts.
General Engineering and Equipment Fabrication
Suitable for any industrial project needing secure, vibration-resistant bolted joints.
Choosing the right fastening partner helps businesses maintain consistency in assembly work, project execution, and ongoing procurement. Vimal Industrial Corporation supports industrial buyers with DIN 931 Hex Bolts that match specific application requirements through proper specifications, stainless steel options, and organized supply support.
Why customers prefer working with us:
From regular industrial requirements to project-based orders, Vimal Industrial Corporation helps businesses source DIN 931 Hex Bolts with accurate specifications, stainless steel quality, and dependable supply coordination.
| Thread (d) | Pitch (P) | Head Height (k) | Width Across Flats (s) | Radius (r) | Min. Thread Length (l) | Min. Shank Length (ls) |
|---|---|---|---|---|---|---|
| M5 | 0.8 | 3.5 | 8 | 0.6 | 16 | 12 |
| M6 | 1.0 | 4 | 10 | 0.8 | 18 | 14 |
| M8 | 1.25 | 5.3 | 13 | 1.0 | 22 | 18 |
| M10 | 1.5 | 6.4 | 17 | 1.2 | 26 | 22 |
| M12 | 1.75 | 7.5 | 19 | 1.5 | 30 | 26 |
| M16 | 2.0 | 10 | 24 | 2.0 | 38 | 32 |
| M20 | 2.5 | 12.5 | 30 | 2.5 | 46 | 40 |
| M24 | 3.0 | 15 | 36 | 3.0 | 54 | 48 |
| M30 | 3.5 | 18.7 | 46 | 3.5 | 66 | 60 |
| M36 | 4.0 | 22.5 | 55 | 4.0 | 78 | 72 |
| Feature | Tolerance / Fit Class | Standard Reference |
|---|---|---|
| Thread Tolerance | 6g (external thread) | ISO 965-1 |
| Head Height (k) | ±0.15 mm (for M5–M10) | DIN EN ISO 4014 |
| Width Across Flats (s) | ±0.2 mm (for M5–M16) | DIN EN ISO 272 |
| Shank Length | +2 / -0 mm | DIN EN ISO 4753 |
| Overall Length (l) | ±1.5 mm | DIN EN ISO 4753 |
The unthreaded shank section of a DIN 931 bolt provides greater shear resistance and better alignment. In high-end construction projects in India, engineers use the smooth section of the bolt’s shank that passes through the joint for better resistance against thread wear and structural movement.
These are property classes indicating tensile strength. An 8.8 grade is standard for general machinery, while 10.9 is for high-stress automotive or industrial parts. Sourcing these high-tensile stainless steel fasteners from a trusted hub like Vimal Industrial ensures the ratings are genuine.
Yes, they use standard metric threading. However, to maintain the integrity of the assembly, experts suggest pairing them with nuts and washers of the same grade. Top-tier nut bolt suppliers always recommend matching the material class for consistent performance.
Standard alloy steel works well, but for extreme heat, specific stainless steel or alloy grades are needed. It is wise to consult a technical bolt fastener specialist to ensure the material won’t lose its tensile strength under thermal stress.
The secret is “Batch Traceability.” It means every hex head bolt can be tracked back to its raw material source. Experts at Vimal Industrial always provide Mill Test Reports (MTR) with their high-tensile fasteners, proving the bolt has passed all strength tests and won’t snap under the load.
