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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 bolts are fully threaded up to the head, making them ideal for pre-tapped holes. DIN 931 bolts have a partially threaded shank with a smooth grip area, better suited for applications requiring high shear strength across the unthreaded portion.

Yes, our factory has the capability to produce DIN 933 hexagon bolts in extremely high tensile 12.9 grade steel. These undergo strict multi-stage heat treatment to achieve maximum yield strength without sacrificing ductility.

Absolutely. As a direct manufacturer, we provide complete traceability including material chemistry and mechanical test reports (EN 10204 Type 3.1) for all batch-produced DIN 933 fasteners upon request.

DIN 933 vs DIN 931: Which Hex Bolt to Choose?

FeatureDIN 933DIN 931
Thread ExtentFully Threaded (up to the head)Partially Threaded (smooth grip shank)
Shear ResistanceStandard across thread rootSignificantly higher across unthreaded shank
Best Use CasePre-tapped holes, thin platesHeavy structural joints with lateral forces
SizingM3 - M64M3 - 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.

Require DIN 933 Fasteners in Bulk?

Our Turkey-based manufacturing facility offers ultra-competitive pricing, fast global shipping, and strict ISO 9001:2015 quality control for DIN 933.

Request a Factory Quote
EN 10204 3.1 Certified Global Cargo OEM/Custom Specs Available

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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

Materials
A2 · A4 · 8.8 · 10.9
Coatings
Zinc · HDG · Dacromet
Sizes
M4 – M72
MOQ
From 100 pcs

Request DIN 933 Fasteners — Factory Direct Quote

ISO 9001 certified manufacturer in Turkey. 297+ active SKUs. 24h response, worldwide shipping.

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ISO 9001:2015
EN 10204 3.1
41+ Countries
Factory Since 1978
DIN · ISO · ASTM
RoHS Compliant