In the construction and bridge industries, the use of resistant and standard connections is considered one of the most important factors to ensure the safety of structures. As the most widely used type of metal connection, hexagon bolts play a vital role in the implementation of civil, industrial and infrastructure projects. Choosing bolts and nuts according to international standards and in the right grade can increase the life of the structure and prevent irreparable damage.
Poladan Sazah Saman as a specialized supplier of industrial bolts and nuts, meets the needs of construction and bridge projects with high quality and a variety of sizes and grades.
The importance of hexagon bolts in the construction industry
Hex bolts and nuts are used in most metal structures due to their standard design, high load tolerance and ease of installation. This type of bolt provides the possibility of uniform force transmission and prevents stress concentration.
In large construction and bridge projects, the quality of hexagon bolts and nuts is directly related to the safety of the structure. The use of non-standard products can cause loosening of connections, premature corrosion and even collapse of the structure.
The role of hexagon bolts in bridge construction
Bridges are structures that are continuously subjected to dynamic loads, vibration, temperature changes and harsh environmental conditions. For this reason, the bolts and nuts used in bridge construction must have high mechanical resistance and strict standards.
Hex bolts and nuts play a key role in connecting beams, columns, bridge decks and side metal structures. Supplying these fittings from a reliable group such as Puladan Sazeh Saman eases the mind of engineers and contractors in terms of quality and durability.
Introduction of DIN standards in hexagon bolts
DIN 933 standard
Full thread hexagon screw that is widely used in structural connections, machinery and construction projects. These screws create a strong connection due to the complete thread.
Din 934 standard
Standard hexagon nut used with Din 933 screws. These beads have high precision and suitable pressure tolerance.
DIN 6914 standard
Hexagonal bolt, a high-strength structure for steel structures and bridge construction. These screws are used in heavy projects.
DIN 6915 standard
Structured hexagonal nut that is used with Din 6914 screws and can withstand high loads.
DIN 6916 standard
Structural flat washer that is used for uniform distribution of force in structural bolt and nut connections.
Checking grades of hexagon bolts
The bolt and nut grade indicates its tensile and mechanical resistance. Choosing the right grade in the construction and bridge industries is very important.
Grade 5.6
Suitable for light and semi-heavy connections in normal construction projects.
Grade 8.8
One of the most used grades in the construction industry and metal structures. This grade has a good balance between resistance and price.
Grade 10.9
Suitable for connections with high loads and tough working conditions. It is widely used in bridge building and industrial structures.
Grade 12.9
The highest mechanical resistance in hexagon bolts. Suitable for super heavy projects and special conditions.
Category HV
HV bolts and nuts are special for advanced structural connections and professional bridge construction. These products are produced under strict quality control and have high resistance to dynamic loads.



Requested and customized sizes
One of the benefits of cooperation with Puladan Sazeh Saman is the possibility of supplying hexagonal bolts and nuts in various and customized sizes. Construction and bridge projects each have their own needs, and the use of accurate size increases safety and reduces side costs.
Application of hexagon bolts and nuts in metal structures
In metal structures such as sheds, metal skeletons, bridges and industrial structures, hexagon bolts play the role of the backbone of the connection. These connections must have enough resistance against vibration, wind, earthquake and temperature changes.
The importance of quality in choosing a bolt and nut supplier
Choosing a reliable supplier for hexagon bolts is one of the most important decisions in construction projects. Low quality bolts and nuts can cause irreparable financial and life losses.
Poladan Sazeh Saman is a safe choice for contractors and engineers by supplying bolts and nuts according to DIN standards and different grades.
Benefits of buying from Poladan Sazeh Saman
- Full variety of hexagon bolts and nuts
- Offering products according to DIN standards
- Supplying grades 5.6, 8.8, 10.9, 12.9 and HV
- Possibility of ordering in requested sizes
- Suitable for building and bridge projects
- Specialized support and technical advice
The role of standard bolts in increasing the life of the structure
Using standard hexagon bolts increases the useful life of the structure, reduces maintenance costs and increases safety. This issue is especially important in bridge construction, where the structure is under constant tension.

Summary
Hex bolts and nuts are one of the most vital consumables in the construction and bridge industries. Choosing bolts and nuts according to DIN standards and the appropriate grade has a direct impact on the safety and durability of the structure.
Poladan Sazeh Saman is a reliable partner for your construction and industrial projects with specialized supply of hexagon bolts and nuts in various grades and sizes.







