Bolt Index I

Product Details:

High Strength Friction Grip (HSFG) Bolts and Nuts are structural fasteners designed for high-load applications where joints rely on frictional grip rather than shear or bearing strength. These bolts are commonly used in steel structures, bridges, and high-stress environments.

• High Tensile Strength – Typically made from high-strength alloy steel (e.g., Grade 8.8, 10.9, or 12.9).
• Friction-Based Load Transfer – The clamping force between connected surfaces provides resistance to movement.
• Preloaded Installation – Installed using a torque-controlled or tension-controlled method for optimal performance.
• Corrosion-Resistant Coatings – Available in galvanized, black oxide, or phosphate coatings for durability.

1. HSFG Bolt – High-strength bolt designed for preloaded applications.
2. Nut – Matches the bolt grade and ensures a secure connection.
3. Washer – Distributes the load evenly and enhances frictional resistance.

1. Steel Bridges & Construction – Used in critical load-bearing structures.
2. Transmission Towers – Ensures reliable fastening in dynamic environments.
3. Heavy Machinery & Industrial Plants – Provides high-strength connections.
4. Railway & Infrastructure Projects – Used in bolted structural joints.

• Turn-of-Nut Method – Tightens the bolt beyond snug-tight condition to achieve the required preload.
• Direct Tension Indicator (DTI) Washers – Special washers that indicate correct preload.
• Torque Control Method – Uses calibrated torque wrenches to apply specific force.
• Tension Control (TC) Bolts – Features a break-off tip to ensure proper preload.

Product Details:

Product Details: