Industrial Flange Bolt

Product Description

Industrial flange bolts are high-strength fasteners featuring a circular, washer-like "flange" integrated directly beneath the hexagonal head. This design eliminates the need for a separate washer, providing a larger bearing surface that distributes clamping pressure more evenly across the material.

Key Mechanical Advantages

• Load Distribution: The built-in flange spreads the load over a wider area, which prevents the bolt head from crushing or "sinking" into softer materials like aluminum or thin sheet metal.

• Gap Spanning: They are excellent for covering oversized or slightly misaligned holes where a standard bolt head might slip through.

• Anti-Vibration: Many industrial flange bolts feature serrations on the underside of the flange. These teeth "bite" into the surface to prevent the bolt from loosening in high-vibration environments like engines or heavy machinery.

Specialized Material Grades

• Grade 8.8 / 10.9 Carbon Steel: The standard for automotive and structural engineering. These are often zinc-plated to provide moderate corrosion resistance.

• Grade 12.9 Alloy Steel: Used in extreme-pressure environments, such as cylinder heads or high-stress transmission components.

• 304/316 Stainless Steel: Preferred in the food, medical, and marine industries where sanitation and resistance to chemical cleaners or saltwater are required.

Recommended Flange Bolt Options

WURTH 304 Stainless Serrated Flange Bolt

These 304 stainless steel bolts feature a serrated flange for superior locking power. They are ideal for outdoor solar panel mounts, fencing, or any application where vibration and moisture are present.

Hillman Grade 8 Hex Flange Bolt

A heavy-duty Grade 8 carbon steel bolt with a yellow zinc finish. These are designed for automotive chassis work and structural framing where high tensile strength is mandatory.

Prime-Line 316 Stainless Flange Bolt

Crafted from 316-grade stainless steel, this bolt is specifically for marine and chemical processing environments. It offers the best protection against pitting and rust in harsh conditions.

Application Guide