Hexagon slotted nuts have radial slots machined into the top face to accept a cotter pin through a cross-drilled bolt shank, creating a positive mechanical lock that prevents loosening regardless of vibration or load cycling.
Safety Lock Function: Once tightened, a cotter pin is inserted through the nut slot and bolt hole and bent outward, providing a fail-safe retention method that requires deliberate action to remove during servicing.
Application Scope: Specified for steering and suspension joints, engineering machinery, aerospace components, and any safety-critical connection where rotational loosening would present an unacceptable operational risk.
Materials and Standards: Produced in carbon steel and stainless steel to DIN 935 and ISO equivalent specifications, with castellated and slotted variants across metric and imperial thread sizes.
Surface Treatment: Zinc plating and stainless grades cover standard corrosion requirements for outdoor and mechanical environments.
About Us
Better Fastener is a professional fastener enterprise specializing in the manufacturing of steel washers, stainless steel washers, spring washers and sealingwashers. Founded in 2001 as a washer factory, the company expanded into a comprehensive enterprise integrating washers, nuts, bolts, spring nuts and other fastener products in 2010.
The company positions itself as a provider of comprehensive one-stop services for customers, relying on technological R&D, industrial investment and trade distribution.
With an experienced professional team and a sound sales network, Better Fastener has achieved excellent sales performance in both domestic and foreign markets,and has grown into one of the competitive manufacturers and suppliers in China's industrial fastener industry.
Better Fastener is committed to becoming a trusted fastener supplier for customers with reliable product quality, reasonable prices and on-time delivery
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