DIN 933
DIN 933 Hexagon Head Fasteners with Full Thread are one of the most widely utilized fastening components in heavy industry, construction, and mechanical engineering. As a premier fastener manufacturer globally distributing from our ISO 9001 certified facility in Turkey, we produce DIN 933 bolts utilizing advanced cold forging and machining technologies. Known for their uniform load distribution and extreme tensile strength, these fully threaded bolts are engineered to provide maximum grip strength in pre-tapped holes or alongside corresponding nuts like DIN 934, ensuring structural integrity even under severe vibration and dynamic loads.
Key Dimensions & Scope
- M3 to M64 diameter range
- Lengths from 6mm up to 500mm
- Standard metric coarse and fine thread pitches
- Precision chamfered ends for easy assembly
- Across flats (A/F) manufactured to strict DIN tolerances
Common Grades & Materials
- Carbon Steel (Property Classes 8.8, 10.9, 12.9) for high-stress applications
- Stainless Steel (A2-70, A4-80) for superior corrosion resistance
- Brass and specialty alloys available upon request
Typical Applications
- Steel framework and building construction
- Automotive chassis and heavy vehicle assembly
- Industrial machinery and power generation equipment
Equivalent Standards
- ISO 4017 ↔ DIN 933
- EN 24017 ↔ DIN 933
Frequently Asked Questions: DIN 933
DIN 933 vs DIN 931: Which Hex Bolt to Choose?
| Feature | DIN 933 | DIN 931 |
|---|---|---|
| Thread Extent | Fully Threaded (up to the head) | Partially Threaded (smooth grip shank) |
| Shear Resistance | Standard across thread root | Significantly higher across unthreaded shank |
| Best Use Case | Pre-tapped holes, thin plates | Heavy structural joints with lateral forces |
| Sizing | M3 - M64 | M3 - M64 (thread length varies) |
Factory Quality & Inspection Protocols
Our adherence to ISO 9001:2015 means every production batch of DIN 933 undergoes rigorous metallurgical and dimensional testing in our in-house laboratory prior to global export.
- Automated Optical Sorting: 100% laser scanning to ensure thread uniformity and pitch accuracy.
- Tensile Testing: Sample destruction tests per batch to guarantee yield and ultimate tensile strengths.
- Thread Gauging: Strict 6g tolerance verification using calibrated Go/No-Go ring gauges.
- Documentation: Full chemical and mechanical traceability via EN 10204 3.1 Certification.
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Our Turkey-based manufacturing facility offers ultra-competitive pricing, fast global shipping, and strict ISO 9001:2015 quality control for DIN 933.
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Typical Applications for DIN 933 Fasteners
Structural Construction
DIN 933 bolts are widely used in steel frame assemblies, bridges, and heavy structural joints requiring reliable clamping force.
Industrial Machinery
Suitable for general machinery, conveyor systems, flanged connections, and equipment assemblies where vibration resistance is essential.
Marine & Energy
Used in shipbuilding, offshore platforms, wind turbine towers and solar panel mounting structures with corrosion-resistant coatings.
Quality Assurance & Testing
- Hardness testing (Vickers / Rockwell) per ISO 898-1
- Dimensional control with CMM and thread gauges
- Salt spray corrosion testing (500–1000h)
- Tensile and proof load testing per batch
- Full traceability — heat number, mill certificates
- ISO 9001:2015 certified manufacturing facility
DIN 933 — Available Variants
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