Carbon steel T-bolts

Carbon steel T-bolts, also known as T-slot bolts, are widely used for securing workpieces, fixtures, and components in machine tool tables, steel structures, and industrial equipment with T-slot tracks. The unique T-shaped head allows the bolt to slide into a T-slot and lock securely when tightened, providing precise positioning and strong clamping force. T-bolts are essential in machining, assembly lines, and structural fastening applications where adjustable and repeatable positioning is required.

ZSD Screw specialize in high-strength carbon steel T-bolts designed for demanding industrial and structural applications. By integrating in-house cold heading, precision thread rolling, heat treatment, and surface finishing with strict quality control, ZSD Screw delivers reliable, international-standard fasteners directly to global customers. This ensures consistent dimensional accuracy, stable mechanical performance, and long-term reliability in heavy-duty fastening environments.

Standard T-bolt dimensions are manufactured according to DIN, ISO, and ASTM standards. Custom drawings and samples are accepted to meet specific project requirements and OEM production needs.

Type: T-Bolt (T-Slot Bolt)
Diameter Range: M6 – M36
Length Range: 20 mm – 300 mm
Thread Type: Metric / UNC / UNF
Thread Form: Partial Thread / Full Thread
Standard: DIN 608 / ISO 7388-1 / ASTM A307
Tolerance: According to standard or customer drawing.

We supply T-bolts in a wide range of materials including: Carbon Steel (Q235, 35#, 45#), Alloy Steel (40Cr, SCM435, SCM440), Stainless Steel (304, 316), and other materials upon request.

Strength Grades: Carbon steel T-bolts are available in different strength grades to meet various load requirements: 4.8, 8.8, 10.9, 12.9, 14.9. ASTM grades: ASTM A307, ASTM A325, ASTM A490. Heat treatment is completed in-house to ensure uniform mechanical properties, controlled hardness, and reliable tensile performance under repetitive and high-load applications.

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, particularly for outdoor, high-humidity, or high-vibration applications.

Applications: In mechanical equipment manufacturing, ZSD Screw carbon steel T-bolts are widely used for securing machine frames, worktables, fixture plates, assembly jigs, and transmission equipment. Their adjustable design allows precise positioning of components while providing stable clamping force, supporting operational safety under continuous vibration and dynamic loading.

In electronic equipment and industrial electronics, carbon steel T-bolts are applied in securing control panels, industrial enclosures, mounting frames, and testing equipment bases. Reliable fastening performance is critical for maintaining alignment accuracy, grounding stability, and vibration resistance in high-precision electronic systems. ZSD Screw T-bolts support both structural fastening and auxiliary mounting applications.

In the new energy sector, carbon steel T-bolts from ZSD Screw are used in solar panel mounting systems, inverter platforms, photovoltaic support structures, and battery rack assemblies. These applications require stable load-bearing performance and long-term durability under outdoor exposure, temperature variation, and mechanical stress. Controlled material selection and surface treatment processes enhance corrosion resistance and service life in renewable energy installations.

In conventional and renewable power generation facilities, T-bolts are applied in turbine mounting systems, generator support structures, cooling system platforms, and auxiliary equipment frames. Secure fastening performance ensures stability under high loads, thermal expansion, and long-term vibration. ZSD Screw provides T-bolt solutions that support safe assembly and reliable operation in power plants and energy infrastructure projects.

In the automotive and transportation industries, ZSD Screw carbon steel T-bolts are used for securing chassis assembly fixtures, engine mounting jigs, transmission assembly lines, and vehicle component platforms. Their precise positioning and consistent clamping force help ensure dimensional accuracy, safety, and operational efficiency in high-volume manufacturing environments.

In heavy industry and engineering equipment manufacturing, these bolts are widely applied in construction machinery fixtures, conveyor systems, lifting equipment assemblies, steel structure installations, and large-scale production platforms. Applications requiring high clamping force and reliable load transmission benefit from ZSD Screw’s controlled production processes and in-house heat treatment, ensuring long-term structural integrity and safe operation in demanding industrial conditions.