Long Fasteners Manufacturing
Long fasteners for fasteners whose length is significantly greater than their diameter. While there's no strict cutoff, threads longer than 6 inches (150mm) or with a length-to-diameter ratio greater than 10:1 are generally considered "long." They include various types of threaded fasteners that come in extended lengths, such as long bolts, threaded rod (Studding or All-Thread), long screws,U-Bolts, J-Bolts, Anchor Bolts and Shaft(Axles).
380mm Double Threaded Bolt with Hex Nut
440mm Single Head Long Knurled Pins
600mm Solid Dowel Pins Manufacturer
Best Extra Long Fasteners Application
∅4×123mm Carbon Steel Axles for Toy Car
Our client, aleading toy car manufacturer in Macedonia, produces high-volume, detailed toy cars for the European market. A critical component of their product is the axle—a small but vital part that must meet exacting standards for precision, strength, and corrosion resistance. But they faced recurring quality issues with miniature axles sourced from a local supplier.Problems with dimensional inconsistency, poor knurling grip, and premature corrosion were leading to assembly line slowdowns, increased rejection rates, and concerns about product longevity. By switching to our custom-engineered, galvanized carbon steel axles, the client achieved a 40% reduction in assembly time, eliminated axle-related failure returns, and significantly enhanced the durability and play experience of their final product.
Construction and Structural Engineering
Heavy-duty, large-diameter bolts are used in bridge construction, skyscraper skeletons, and other large structures to connect steel beams and secure structural components.
Heavy Machinery and Manufacturing
Heavy machinery and large industrial equipment, such as manufacturing presses and conveyor systems, are assembled and secured using long bolts that can withstand heavy loads and constant vibration.
Automotive
Flange bolts measuring up to 30 cm are used in the construction of large vehicles like trucks and ships, and in large-scale mechanical applications.
Renewable Energy
Extremely long and high-strength bolts are used to connect the massive segments of the tower and to secure the rotor hub to the main shaft. Threaded rod is extensively used to build the support structures for large-scale solar farms.
Why Choose King Tower
King-Tower over 20 years specializing in manufacturing non-standard fasteners to specific industrial needs.
Over 200 Units Produced Machine
King Tower equipped with different production machine contain cold heading forming machine, thread rolling machine, programmable CNC machines, automatic lathe machines, spring machine and stamping machine, and include secondary process like drilling, cutting and grooving, total machine over 200 units to meet the complex fastener production.
Diverse range of test machines to ensure the quality and functionality
King Tower with a comprehensive array of testing machinery, that can meticulously assess various aspects, including salt spray test machine, two-dimensional image measuring instrument, hardness test machine, optical image screening machine and torque machine.
Diversity of customized fasteners
King Tower produced screw thread diameter from 0.8mm to 20mm, length from 2mm to 400mm, with specialized material include carbon/alloy steel, stainless steel, aluminum, brass and titanium. Full rang of surface treatment including plating, electrophoresis, coating, Dacromet, laser engraving and vacuum coating.
