Bolt DIN 931 1/2x2 1/4 (57 mm) Grade 5 (~8,8) UNC 13

Overview

DIN 931 is a hex head bolt with a partial thread and inch thread. Its design includes a smooth shank section under the head, which ensures even load distribution and reduces the risk of stress concentration. The inch thread is manufactured according to the UNC standard, allowing the bolt to be used in various mechanical connections.

DIN 931 8.8 bolts are characterized by high strength corresponding to class 8.8, making them suitable for applications where reliability is required. Various sizes are available, allowing the optimal option to be selected for specific conditions.

Applications

The DIN 931 8.8 UNC hex head bolt with partial thread is ideal for use in systems that require inch threads. This product meets high strength standards, making it a reliable choice for heavy structures and mechanisms. Thanks to strength class 8.8, the bolt can withstand significant loads, making it suitable for mechanical engineering, construction, and the automotive industry.

The bolt dimensions comply with international standards, ensuring compatibility with various fastening elements. The partial thread allows an optimal connection to be achieved in confined spaces, while the hex head ensures convenient installation. This bolt is a reliable solution for projects where joint strength and durability are important.

Alternatives

DIN 931 8.8 UNC is a hex head bolt with a partial inch thread that meets high strength standards. Strength class 8.8 indicates that this bolt has a minimum yield strength of 640 MPa and a tensile strength of 800 MPa, making it suitable for structures where reliability is required.

It is important to consider that DIN 931 8.8 UNC has a partial thread, which provides better fastening in materials. When selecting alternatives, pay attention to the thread type: UNC has a specific pitch that differs from other standards, such as UNF, which may cause incompatibility. Bolt dimensions vary, so it is important to select the exact size according to your project requirements.

Technical Specifications

Please note: the product color may vary depending on the production batch — black or grey. This does not affect the technical characteristics or quality of the product.

Is It Worth Buying

The DIN 931 8.8 UNC hex head bolt with partial thread is ideal for applications requiring high strength and reliable fastening. Strength class 8.8 ensures that this bolt can withstand significant loads, making it an optimal choice for industrial and construction projects.

Thanks to its inch thread, this bolt is easy to install in systems where metric bolts are not suitable. The partial thread helps reduce the risk of thread stripping, increasing the overall reliability of the connection. The dimensions and characteristics of this bolt make it a versatile solution for various technical tasks.

Where It Is Used

The DIN 931 8.8 UNC hex head bolt with partial thread is a reliable solution for joining structural elements that require inch-threaded fasteners. Its strength class 8.8 provides high resistance to loads, making it suitable for industrial and construction projects.

Thanks to the partial thread, this bolt is easy to install in confined spaces, while the hex head allows convenient tightening with a wrench. Made of high-quality steel, it offers good corrosion resistance, extending its service life in humid or aggressive environments.