Overview
Through bolts are engineered fasteners designed to secure materials by passing completely through the components being joined, providing a robust and reliable connection. Typically manufactured from high-grade steel, stainless steel, or alloy materials, through bolts are precision-engineered to meet stringent industrial standards. Their design includes a fully threaded or partially threaded shaft with a hexagonal head or other drive types, allowing for efficient torque application during installation. The manufacturing process involves cold forging or machining to ensure dimensional accuracy and mechanical strength. Through bolts are valued for their ability to withstand high tensile and shear forces, making them suitable for heavy-duty applications where structural integrity is critical. Their versatility allows them to be used in construction, machinery assembly, automotive manufacturing, and infrastructure projects, where secure fastening is essential for safety and performance.
The performance of through bolts is enhanced by their material composition and heat treatment processes, which improve hardness, corrosion resistance, and fatigue life. These fasteners provide a dependable solution for joining thick or multiple layers of materials, as the bolt extends through the entire assembly and is secured with a nut on the opposite side, distributing load evenly and minimizing stress concentrations. Through bolts also facilitate easy disassembly and maintenance, which is advantageous in industrial settings requiring periodic inspections or repairs. Their design ensures consistent clamping force and resistance to loosening under vibration or dynamic loads. By offering superior strength, durability, and adaptability, through bolts remain a preferred choice for engineers and manufacturers seeking dependable fastening solutions in demanding environments.
| Product Type | Through Bolts |
| Head Style | Hexagonal Head |
| Manufacturing Process | Cold Forged and Machined |
| Thread Type | Fully or Partially Threaded, Unified National Coarse (UNC) or Unified National Fine (UNF) |
| Common Materials | Carbon Steel, Alloy Steel, Stainless Steel |
| Available Sizes | Diameter: 1/4″ to 1-1/2″, Length: 1″ to 12″ or longer |
| Strength Features | High Tensile Strength, Heat Treated Options Available |
| Typical Applications | Structural Connections, Heavy Machinery Assembly, Construction, Automotive |
| Surface Finishes | Zinc Plated, Hot-Dip Galvanized, Black Oxide, Plain |
| Standards | ASTM A325, ASTM A490, ISO 898-1 |
| Customization | Custom Sizes, Materials, Threads & Surface Finishes Available |
Designed to withstand significant tensile and shear forces, ensuring secure fastening in heavy-duty applications.
Passes completely through materials for maximum clamping force and joint stability.
Available in stainless and coated steels to resist corrosion in harsh environments.
Manufactured with accurate threading for smooth installation and strong nut engagement.
Offers a broad range of diameters and lengths to suit diverse application needs.
Meets ASTM, ISO, and DIN standards for quality and performance assurance.
| Product Type | Through Bolt |
| Thread Type | Coarse and Fine Threads |
| Diameter Range | M8 to M48 |
| Length Range | 50 mm to 600 mm |
| Available Materials | Carbon Steel, Stainless Steel, Alloy Steel |
| Manufacturing Standards | ASTM A325, ISO 898-1, DIN 6914 |
| Surface Finish | Plain, Zinc Plated, Hot-Dip Galvanized |
| Diameter (mm) | Length (mm) |
|---|---|
| M8 | 50–150 |
| M16 | 100–300 |
| M24 | 150–450 |
| M36 | 200–600 |