Carbon steel hexagonal nut

Hex nut, also known as hexagon nut, is widely used for fastening and securing bolts in mechanical assemblies, steel structures and industrial equipment. ZSD Screw specialize in high-strength carbon steel hex nuts designed for demanding structural and industrial applications. By integrating in-house production with rigorous quality control, ZSD Screw delivers reliable, international-standard fastening components directly to global customers, ensuring secure locking performance and long-term structural stability.

Standard hex nut dimensions are manufactured according to DIN, ISO and ASTM standards.Custom drawings and samples are accepted.

Type: Hexagon Nut
Diameter Range: M2 – M64
Height Range: According to standard specifications
Thread Type: Metric / UNC / UNF
Thread Form: Coarse Thread / Fine Thread
Standard: DIN 934 / ISO 4032 / ISO 4033 / ASTM A563
Tolerance: According to standard or customer drawing.
We supply hex nuts in a wide range of materials including:Carbon Steel (Q235, 35#, 45#)
Alloy Steel (40Cr, SCM435, SCM440)Stainless Steel (304, 316, 316L)
Brass, Aluminum and Titanium (on request)

Strength Grades: Hex nuts are available in different strength grades to match corresponding bolt grades and meet various load requirements: 4.8, 8.8, 10.9, 12.9, 14.9.   ASTM grades: ASTM A563, ASTM A194.  Heat treatment is completed in-house to ensure stable mechanical properties and reliable load-bearing performance.

Surface Treatment: To improve corrosion resistance and service life, we offer the following surface finishes: Zinc plated (blue / white / yellow). Black oxide. Hot dip galvanized. Zinc flake coating. Phosphate. Dacromet. Special surface treatments are available according to customer requirements.

Applications:In mechanical equipment manufacturing, ZSD Screw carbon steel hex nuts are widely used together with bolts for assembling machine frames, transmission systems, gearboxes, motors, pumps, compressors, and automated production equipment. These applications require secure thread engagement and stable preload performance to ensure long-term operational safety under vibration and cyclic loading. Precision thread processing and controlled heat treatment help maintain consistent mechanical strength and assembly reliability.

In electronic equipment and industrial electronics, carbon steel hex nuts are applied in equipment housings, control cabinets, industrial enclosures, power distribution frames, and supporting brackets. Reliable locking performance is critical for maintaining alignment accuracy, grounding stability, and vibration resistance in precision systems. ZSD Screw supplies hex nuts suitable for both structural fastening and auxiliary mounting applications, supporting stable assembly in manufacturing lines and control systems.

In the new energy sector, carbon steel hex nuts from ZSD Screw are used in solar mounting systems, photovoltaic support structures, inverter frames, battery rack systems, and energy storage equipment assemblies. These applications require dependable clamping force and long-term durability under outdoor exposure and temperature variation. Controlled material selection and surface treatment processes help enhance corrosion resistance and extend service life in renewable energy installations.

In conventional and renewable power generation facilities, these nuts are applied in generator foundations, turbine housings, auxiliary equipment frames, cooling systems, and pipeline supports. Secure fastening is essential for maintaining structural stability under high loads, thermal expansion, and long-term vibration. ZSD Screw provides fastening solutions that support safe assembly and reliable operation in thermal power plants, wind power systems, hydropower equipment, and energy infrastructure projects.

In the automotive and transportation industries, ZSD Screw carbon steel hex nuts are used in chassis assemblies, engine mounting systems, suspension components, transmission brackets, and structural connections. These joints require consistent strength performance and dimensional accuracy to ensure vehicle safety and durability under dynamic operating conditions. Stable production control ensures reliable fastening quality across high-volume manufacturing and aftermarket applications.

In heavy industry and engineering equipment manufacturing, these nuts are widely applied in construction machinery, mining equipment, lifting systems, steel structure installations, and large-scale mechanical assemblies. Applications such as cranes, excavators, conveyors, and processing equipment require dependable load transmission and secure locking under heavy static and impact loads. ZSD Screw supplies fastening components designed to support long-term structural integrity and safe operation in demanding industrial environments.