Core Design & Functional Features
1. Hex Flange Head Design
The bolt features an integrated hex flange head, which combines the wrenching functionality of a standard hex head with the load-distributing benefits of a built-in washer. This design offers several key advantages:
Enhanced Load Distribution: The wide flange surface spreads clamping force over a larger area, preventing damage to soft or delicate materials, reducing the risk of surface indentation, and improving stability on uneven or rough surfaces.
Tool Engagement: The six-sided hex head provides multiple contact points for standard socket or wrench tools, ensuring a secure grip during high-torque installation without slippage or rounding.
Reduced Parts Count: By integrating the washer into the bolt head, the design eliminates the need for a separate flat washer, simplifying inventory management and streamlining assembly processes.
2. Precision-Rolled Threads with Pre-Applied Adhesive
The defining feature of these bolts is the pre-applied thread locker coating, applied to a specific section of the bolt's precision-rolled threads. This coating is typically a nylon-based or acrylic-based resin, formulated to activate when the bolt is screwed into a mating nut or threaded hole.
Locking Mechanism: As the bolt is tightened, the adhesive on the thread is compressed and cured, forming a durable, plastic-like bond between the male and female threads. This bond creates a positive mechanical lock that resists loosening from vibration, shock, thermal expansion, and contraction.
Controlled Torque Performance: The pre-applied coating is engineered to provide consistent, repeatable locking torque values, eliminating the variability associated with hand-applied liquid thread lockers. This ensures uniform performance across every fastener in an assembly.
Color-Coded Strength Grades: The coating is often color-coded to indicate its strength level, making it easy to select the right bolt for the application:Red Coating: High-strength, permanent lock. Requires heat and mechanical force to disassemble, ideal for critical, high-load applications such as engine blocks, transmission assemblies, and suspension components.
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