Hexagon Bolts DIN 933
Hexagon Bolts DIN 933 – Fully Threaded Metric Hex Bolts
Looking for DIN 933 hexagon bolts? Intergard supplies high-quality, fully threaded hex head bolts for construction, machinery, metal fabrication and general engineering. Available in zinc-plated steel grade 8.8 and stainless steel A2 or A4, these metric bolts provide secure fastening with compatible nuts or tapped holes.
Choose from a wide range of diameters and lengths, including M5, M6, M8, M10, M12 and M24. Suitable for professional installers, industrial users and DIY projects. All prices are per 100 bolts. Bulk orders and wholesale enquiries welcome.
DIN 933 Hexagon Bolts for Construction, Engineering and Industrial Fastening
DIN 933 hexagon bolts are fully threaded metric fasteners with an external hexagonal head. They are widely used for joining components in steel construction, machinery, metal fabrication, equipment assembly and general engineering.
The defining feature of a DIN 933 bolt is its full-length metric thread, which extends along the shank towards the underside of the hexagonal head. This makes DIN 933 bolts particularly useful where thread engagement is required over a relatively large proportion of the bolt length.
Intergard supplies fully threaded hex bolts in zinc-plated steel grade 8.8 and stainless steel A2 and A4. These materials offer different combinations of mechanical properties, corrosion resistance and cost.
Our range includes metric sizes such as M5, M6, M8, M10, M12 and M24, with various lengths available for professional construction, engineering and maintenance applications.
All listed prices are per 100 bolts.
What Are DIN 933 Hexagon Bolts?
A DIN 933 hexagon bolt is a metric fastener with an external six-sided head and a fully threaded shaft. It is designed to secure components together using a compatible metric nut or a suitably tapped hole.
DIN 933 is the traditional German standard for fully threaded hexagon head screws. Its corresponding international standard is ISO 4017, although dimensional differences may exist between standards and editions.
In British English, these fasteners are commonly described as fully threaded hexagon bolts, hex head bolts, metric hex bolts or hexagon head set screws.
The external hexagonal head allows installation with a spanner, socket or suitable torque tool.
Key Features of DIN 933 Hexagon Bolts
- External hexagonal head for secure tool engagement.
- Fully threaded metric shaft.
- Suitable for connections using compatible nuts or tapped holes.
- Available in zinc-plated steel and stainless steel.
- Steel property class 8.8 and stainless steel A2/A4 options.
- Wide range of metric diameters and lengths.
- Suitable for construction, machinery and industrial assembly.
- Practical for maintenance, repairs and professional installations.
- Available for trade and wholesale purchasing.
Why Choose DIN 933 Fully Threaded Hex Bolts?
1. Full Metric Thread for Flexible Fastening
The main advantage of DIN 933 bolts is their fully threaded design. Unlike partially threaded bolts, DIN 933 fasteners provide a threaded section along virtually the entire shaft.
This allows a compatible nut to engage at different positions along the bolt, provided the connection geometry and required thread engagement are suitable.
Fully threaded bolts are also useful for applications involving tapped holes where the bolt needs to engage directly with an internally threaded component.
2. Hexagon Head for Controlled Installation
The six-sided head allows DIN 933 bolts to be tightened using a suitable spanner or socket.
This makes them practical for installation, maintenance and disassembly, particularly where controlled tightening is required.
3. Versatile Industrial Applications
DIN 933 hexagon bolts are used in machinery, metal structures, industrial equipment, fabricated components and general mechanical connections.
The correct bolt must always be selected according to the connection design, loading conditions and applicable technical requirements.
4. Choice of Material and Corrosion Protection
Intergard offers DIN 933 bolts in zinc-plated steel and stainless steel, allowing customers to select a suitable fastener for the intended environment.
Zinc-plated steel provides corrosion protection through a surface coating, while stainless steel offers corrosion resistance through the properties of the alloy itself.
Galvanized DIN 933 Hexagon Bolts – Steel Grade 8.8
Galvanized DIN 933 hexagon bolts are manufactured from steel with a protective zinc coating.
Intergard's product information identifies the zinc-plated version as property class 8.8, a commonly used strength class for metric steel fasteners.
Property class 8.8 indicates a nominal tensile strength of 800 MPa and a nominal yield-strength ratio of 0.8. The applicable fastener standards determine the actual mechanical requirements and testing conditions.
Advantages of Zinc-Plated DIN 933 Bolts
- Steel property class 8.8 for suitable mechanical applications.
- Protective zinc coating helps delay corrosion.
- Suitable for many dry indoor and sheltered installations.
- Compatible with appropriately specified metric nuts and washers.
- Cost-effective for many industrial and general engineering applications.
Electrolytic zinc plating and hot-dip galvanizing are different coating processes. Their coating thickness, dimensions and corrosion performance can differ. Always check the individual product specification before selecting bolts for exposed conditions.
Stainless Steel DIN 933 Hexagon Bolts – A2 and A4
Stainless steel DIN 933 hexagon bolts are suitable for many applications where increased corrosion resistance is required.
Intergard's product information includes A2 and A4 stainless steel versions.
A2 Stainless Steel DIN 933 Bolts
A2 stainless steel offers good general corrosion resistance and is suitable for many indoor and ordinary outdoor environments.
It is widely used for metal fittings, equipment, general engineering and suitable construction applications.
A4 Stainless Steel DIN 933 Bolts
A4 stainless steel generally offers improved resistance compared with A2 in certain chloride-containing environments.
It may be preferable for more demanding exposure conditions, depending on the actual environment and technical requirements.
Important: A2 and A4 indicate stainless steel grades, not complete mechanical strength classes. For applications requiring verified strength, check the full fastener designation, such as A2-70 or A4-70, in the product specification.
DIN 933 vs DIN 931 – What Is the Difference?
The most important distinction between DIN 933 and DIN 931 is the length of the threaded section.
| Feature | DIN 933 | DIN 931 |
|---|---|---|
| Head design | Hexagon head | Hexagon head |
| Thread | Fully threaded | Partially threaded |
| Unthreaded shank | Normally absent | Normally present |
| Corresponding ISO standard | ISO 4017 | ISO 4014 |
| Typical selection criterion | Thread engagement along most of the shaft | Connection geometry requiring a smooth shank |
DIN 933 bolts are suitable where a fully threaded design is required. DIN 931 bolts are often selected where an unthreaded shank is required within the connection.
For partially threaded alternatives, explore our DIN 931 hexagon bolts.
DIN 933 Hexagon Bolt Sizes – M5 to M24
DIN 933 bolts are specified by their nominal metric thread diameter and length.
For example, an M10 x 50mm DIN 933 bolt has a nominal thread diameter of 10mm and a length of 50mm, measured from beneath the hexagon head to the end of the bolt.
The supplied Intergard range includes the following diameters and example lengths.
M5 DIN 933 Hexagon Bolts
M5 fully threaded bolts are suitable for appropriately designed smaller equipment and metal component connections.
Examples include M5 x 16mm, M5 x 20mm, M5 x 25mm and M5 x 30mm.
M6 DIN 933 Hexagon Bolts
M6 hexagon bolts are widely used for suitable metal fittings, machinery components and general fastening applications.
Examples include M6 x 16mm, M6 x 20mm, M6 x 25mm, M6 x 30mm, M6 x 40mm and M6 x 50mm.
M8 DIN 933 Hexagon Bolts
M8 fully threaded hex bolts are commonly selected for mechanical assemblies, brackets and metal connections.
Examples include M8 x 16mm, M8 x 20mm, M8 x 25mm, M8 x 30mm, M8 x 40mm, M8 x 50mm and M8 x 60mm.
M10 DIN 933 Hexagon Bolts
M10 bolts are suitable for appropriately designed machinery, construction and metal fabrication connections.
Examples include M10 x 20mm, M10 x 25mm, M10 x 30mm, M10 x 40mm, M10 x 50mm and M10 x 60mm.
M12 DIN 933 Hexagon Bolts
M12 hexagon bolts are commonly used in suitably specified engineering and construction connections.
Examples include M12 x 20mm, M12 x 25mm, M12 x 30mm, M12 x 40mm, M12 x 50mm and M12 x 60mm.
M24 DIN 933 Hexagon Bolts
M24 fully threaded hex bolts are used for substantial industrial and mechanical connections where the dimensions and mechanical requirements have been correctly established.
Examples include M24 x 50mm, M24 x 60mm, M24 x 70mm, M24 x 80mm, M24 x 90mm and M24 x 100mm.
Important: These dimensions are examples from the supplied product listing. Not every size is necessarily available in every material or finish.
How to Choose the Correct DIN 933 Bolt Length
The correct bolt length depends on the total thickness of the connected components, the required thread engagement and the fastening method.
When selecting a fully threaded DIN 933 bolt, consider:
- The total thickness of the components being joined.
- The nominal metric thread diameter.
- The required nut or tapped-hole engagement.
- The thickness of any washers.
- The height and type of nut.
- Available clearance around the connection.
- The mechanical loading requirements.
- The applicable installation specifications.
A bolt that is too short may provide insufficient thread engagement. A bolt that is excessively long may interfere with surrounding components or make installation unnecessarily difficult.
Which Nuts and Washers Fit DIN 933 Hexagon Bolts?
DIN 933 bolts are designed for use with compatible metric nuts or internally threaded holes. Washers may also be required depending on the connection design.
Hexagon Nuts DIN 934
DIN 934 hexagon nuts are commonly used for metric bolted connections.
Choose a nut with the correct thread diameter, pitch, material and mechanical property class.
Lock Nuts DIN 985
DIN 985 lock nuts feature a non-metallic locking element designed to help resist loosening.
Always check their suitability for the operating temperature, loading and installation conditions.
Flat Washers DIN 125 A
DIN 125 A flat washers provide a bearing surface beneath the bolt head or nut.
Large-Diameter Washers DIN 9021
DIN 9021 large-diameter washers provide a larger bearing area and can be useful where additional surface support is required.
Always select nuts and washers that are compatible with the bolt dimensions, material and mechanical requirements.
Where Are DIN 933 Hexagon Bolts Used?
Mechanical Engineering
Fully threaded hexagon bolts are used in machinery, equipment assembly and mechanical connections where a suitable metric threaded fastener is required.
Metal Fabrication
DIN 933 bolts can be used for joining metal plates, brackets, frames and fabricated components.
The correct bolt property class and dimensions must be selected according to the expected loading.
Steel Construction
DIN 933 bolts may be used in suitably designed steel connections when the fastener specification meets the applicable structural requirements.
For structural steelwork, the complete bolting assembly must be selected and verified in accordance with the relevant design and execution standards.
Industrial Maintenance
Maintenance teams use DIN 933 hexagon bolts for replacing suitable fasteners, repairing equipment and assembling mechanical components.
Construction and Professional DIY
Fully threaded metric hex bolts are also useful for suitable construction-related installations, workshop projects and general fastening tasks.
How to Choose DIN 933 Hexagon Bolts in 8 Steps
- Identify the application: Determine whether the bolt will be used in machinery, metal fabrication, construction or general assembly.
- Check the loading requirements: Establish the required mechanical property class and connection design.
- Select the metric diameter: Choose the correct size, such as M6, M8, M10 or M12.
- Determine the bolt length: Allow for component thickness, washers and required thread engagement.
- Confirm the full-thread design: Check that DIN 933 is appropriate for the connection rather than a partially threaded DIN 931 bolt.
- Choose the material: Select zinc-plated steel or a suitable stainless steel grade.
- Select compatible nuts and washers: Match the thread dimensions and mechanical specifications.
- Verify the installation requirements: Check the tightening method, loading and applicable technical standards.
How to Install DIN 933 Hexagon Bolts Correctly
- Inspect the components: Ensure the fixing holes and connected parts are clean and correctly aligned.
- Check the bolt specification: Confirm the diameter, length, material and property class.
- Insert the bolt: Position the bolt through the aligned holes or into a compatible tapped hole.
- Fit suitable washers: Install washers where required by the connection design.
- Engage the nut or thread: Ensure the threads engage correctly without cross-threading.
- Tighten the fastener: Use the appropriate spanner, socket or torque tool.
- Apply the specified tightening procedure: Follow the required torque or preload instructions where applicable.
- Inspect the connection: Check the seating of the bolt head, washers and nut, together with the required thread engagement.
Installation tip: Do not apply a universal tightening torque to all DIN 933 bolts. The correct torque depends on the bolt diameter, property class, coating, lubrication and connection requirements.
Common Mistakes When Using DIN 933 Hexagon Bolts
Confusing DIN 933 with DIN 931
DIN 933 bolts are fully threaded, while DIN 931 bolts are partially threaded. Choosing the wrong type may affect the suitability of the connection.
Using the Wrong Bolt Length
Insufficient bolt length can result in inadequate thread engagement, while excessive length may cause interference with surrounding components.
Mixing Incompatible Bolt and Nut Grades
The mechanical properties of the nut must be compatible with the bolt. Always check the required property classes.
Choosing Unsuitable Corrosion Protection
Ordinary zinc plating may not provide adequate protection for exposed or aggressive environments. Select an appropriate coating or stainless steel grade.
Overtightening the Connection
Excessive tightening can damage the bolt, nut or connected components. Follow the specified tightening procedure.
Frequently Asked Questions About DIN 933 Hexagon Bolts
What are DIN 933 hexagon bolts?
DIN 933 hexagon bolts are metric fasteners with an external hexagonal head and a fully threaded shaft. They are used for fastening components in machinery, construction, metal fabrication and general engineering.
Are DIN 933 bolts fully threaded?
Yes. DIN 933 specifies fully threaded hexagon head fasteners, unlike DIN 931, which specifies a partially threaded design.
What is the difference between DIN 933 and DIN 931?
DIN 933 bolts have a full thread, while DIN 931 bolts have a partial thread and an unthreaded shank section. The correct choice depends on the connection requirements.
What is the ISO equivalent of DIN 933?
ISO 4017 is the corresponding international standard for fully threaded hexagon head screws. Check the applicable specifications before substituting one standard for another.
What does property class 8.8 mean?
Property class 8.8 identifies a metric steel fastener strength class with a nominal tensile strength of 800 MPa and a nominal yield-strength ratio of 0.8.
Are DIN 933 bolts available in stainless steel?
Yes. Intergard's product information includes stainless steel A2 and A4 versions. Check the individual product specification for the exact material and mechanical properties.
Which nuts fit DIN 933 bolts?
DIN 933 bolts require compatible metric nuts with the correct thread diameter, pitch and mechanical specification. DIN 934 hexagon nuts are a common option.
Are DIN 933 hexagon bolt prices per 100 pieces?
Yes. All listed prices for Intergard DIN 933 hexagon bolts are per 100 bolts.
Buy DIN 933 Hexagon Bolts at Intergard
Looking to buy DIN 933 hexagon bolts online? Intergard supplies quality fully threaded metric hex bolts for construction, engineering, machinery and industrial fastening.
Choose from galvanized DIN 933 hexagon bolts and stainless steel DIN 933 hexagon bolts to find the right dimensions and material for your application.
Looking for partially threaded alternatives? Explore our DIN 931 hexagon bolts.
Complete your fastening assembly with suitable hexagon nuts and washers.
All listed prices are per 100 bolts.
Wholesale DIN 933 Hexagon Bolts for Trade Customers
Intergard has been an importer and wholesaler of garden products, hardware and fastening materials since 1997, supplying DIY retailers, garden centres, hardware merchants and professional resellers throughout Europe.
Are you a distributor, industrial supplier, hardware retailer or professional buyer looking to purchase DIN 933 hexagon bolts in bulk, by the pallet or by the truckload?
Send us your enquiry with the required metric sizes, lengths, material grades, quantities and delivery address. We will be pleased to prepare a competitive wholesale quotation tailored to your requirements.
Email: info@intergard.nl
Telephone: +31 546 579030
Order DIN 933 hexagon bolts from Intergard or request your wholesale quotation today.