Overview
12 Point Flange Bolts are specialized fasteners designed to provide superior clamping force and secure fastening in demanding industrial applications. Featuring a unique 12-point head design, these bolts allow for greater torque application and improved grip compared to traditional hex bolts. The flange beneath the head acts as an integrated washer, distributing load evenly and reducing the risk of damage to the mating surface. Manufactured from high-grade alloy steel or stainless steel, 12 Point Flange Bolts undergo precise machining and heat treatment processes to ensure optimal strength, durability, and resistance to corrosion. Their design facilitates easy installation in tight spaces where standard tools may not fit, making them ideal for automotive, heavy machinery, and construction sectors.
The performance of 12 Point Flange Bolts is characterized by their ability to withstand high stress and vibration, maintaining joint integrity under harsh operating conditions. These bolts are commonly used in engine assemblies, gearboxes, and structural frameworks where reliable fastening is critical. The combination of the 12-point head and flange provides enhanced torque transmission and prevents loosening, contributing to improved safety and maintenance efficiency. Available in various sizes and finishes, 12 Point Flange Bolts offer versatility and long service life, making them a preferred choice for engineers and maintenance professionals seeking robust fastening solutions in industrial environments.
| Product Type | 12 Point Flange Bolts |
| Head Style | 12 Point Flanged Head |
| Manufacturing Process | Cold Forged or Hot Forged |
| Thread Type | Unified National Coarse (UNC) or Unified National Fine (UNF) |
| Common Materials | Carbon Steel, Alloy Steel, Stainless Steel |
| Available Sizes | #10 to 1-1/2 inch diameter, Lengths from 1/2 inch to 6 inches |
| Strength Features | High tensile strength, flange provides increased bearing surface and distributes load |
| Typical Applications | Automotive, heavy machinery, structural assemblies requiring high torque and load distribution |
| Surface Finishes | Zinc plated, black oxide, hot-dip galvanized, phosphate coated |
| Standards | ASTM A354, SAE J429, ISO 898-1 |
| Customization | Custom Sizes, Materials, Threads & Surface Finishes Available |
Designed to withstand high torque applications, ensuring secure fastening in heavy machinery and automotive assemblies.
Built-in flange distributes load evenly, reducing surface damage and eliminating the need for separate washers.
Allows for better wrench engagement and torque application in tight spaces compared to hex heads.
Available in stainless steel and coated carbon steel to resist corrosion in harsh environments.
Manufactured using precision forging for enhanced strength and dimensional accuracy.
Flange and head design provide excellent resistance to loosening under vibration and dynamic loads.
| Product Type | 12 Point Flange Bolt |
| Thread Type | Unified National Coarse (UNC), Metric |
| Diameter Range | M8 to M36 |
| Length Range | 20 mm to 150 mm |
| Available Materials | Carbon Steel, Alloy Steel, Stainless Steel |
| Manufacturing Standards | ASTM A193, SAE J429 |
| Surface Finish | Plain, Zinc Plated, Black Oxide |
| Diameter (mm) | Head Width Across Flats (mm) | Flange Diameter (mm) | Length Range (mm) |
|---|---|---|---|
| M8 | 13 | 20 | 20–80 |
| M12 | 19 | 30 | 30–100 |
| M16 | 24 | 38 | 40–120 |
| M24 | 36 | 55 | 50–150 |
| M36 | 55 | 80 | 60–150 |
