Knurled Bolt Nut
Products Description
The Knurled Bolt Nut is a precision fastening component used in electrical terminal structures, relay assemblies, busbar connections, and industrial conductive fastening systems. The product combines threaded fastening performance with anti-slip knurled geometry to improve assembly stability during installation and repeated tightening operations.
Unlike standard commercial hardware fasteners, this knurled bolt nut is designed for electrical and structural integration inside relay modules, switchgear assemblies, copper terminal connections, and automotive electrical systems.
The component supports customized thread structures, knurling geometry, plating types, and dimensional tolerances for automated assembly production.
Optimized Knurling Structure for Enhanced Tightening and Operation Performance
Unlike the simple tooth design of general-purpose Knurled Nuts, this product achieves core advantages of "effortless manual tightening, stable anti-loosening, and convenient installation" through precise optimization of the knurling tooth shape, size, and layout: Customizable Knurling Tooth Shape: Offers three core tooth shapes: straight knurling, cross knurling, and diagonal knurling, to suit different scenarios: Straight knurling teeth are parallel to the nut axis, providing uniform resistance during manual tightening, suitable for scenarios requiring frequent disassembly (such as component debugging); Cross knurling (cross teeth) has a large contact area and strong interlocking friction, offering optimal anti-loosening performance, suitable for vibration environments (such as motors and automotive electronics); Diagonal knurling has a slight chamfer, providing an "automatic centering" effect during tightening, suitable for installation in confined spaces or blind holes.
Optimized Tooth Profile Parameters: The knurled tooth height, tooth pitch, and tooth tip angle have been designed using mechanical simulation. The tooth height is controlled between 0.15-0.3mm (depending on the specification), ensuring sufficient engagement depth while avoiding damage to the substrate caused by excessive tooth height. The tooth tip angle adopts a rounded transition design to reduce stress concentration during tightening, improve manual operation comfort, and enhance tooth wear resistance, preventing tooth wear failure after long-term use.
Structural Shape Compatibility: Available in three shapes: cylindrical, hexagonal, and flange. The cylindrical shape is suitable for injection molding, embedding or round hole installation; the hexagonal shape is compatible with tool-assisted tightening (manual/tool dual compatibility); the flange shape integrates a gasket function, increasing the contact area, dispersing tightening pressure, and preventing deformation of thin substrates, making it suitable for easily deformable substrates such as thin plates and plastic sheets.
Design Advantages: Engineering-Driven Efficiency
Optimized Operating Force
The knurled design keeps the tightening force within the range of 1.5-3.0 N·m, suitable for manual operation and avoiding excessive force.
01
Visual Recognition
The knurled pattern design considers visual recognition in complex assembly environments, reducing operational errors.
02
Contamination Resistance
The knurled design considers operational performance in oily environments, maintaining good frictional characteristics.
03
Multi-Material Compatibility
The knurled design adapts to shafts of different materials, ensuring stable operation under various assembly conditions.
04
Ergonomic Optimization
The knurled pattern matches the finger contact surface, achieving the best human-machine interaction experience.
05
Core Value We Create for You
Reduced Overall Production Costs
Eliminates the cost and management of specialized tools, simplifies assembly processes, increases production line cycle time, and reduces part scrap due to improper tooling.
Enhanced User-Friendliness and Brand Image of End Products
A well-designed, smooth-feeling Knurled Thumb Nut conveys attention to detail and user experience, enhancing the brand's professionalism and premium feel.
Enhanced Equipment Maintainability and Market Adaptability
Enables on-site maintenance and customer-initiated upgrades, reducing after-sales service costs and broadening the product's applicability in markets with varying user skill levels for Knurled Insert Nut.
FAQ
What is the purpose of the knurled structure on the bolt nut?
The knurled structure improves grip, anti-rotation performance, and retention during fastening and embedded assembly operations.
Can the knurled bolt nut be used in automotive relay systems?
Yes. The component is commonly used in automotive relay assemblies, fuse boxes, and electrical fastening structures requiring vibration resistance.
Which materials are commonly used for electrical fastening applications?
Carbon steel, stainless steel, and alloy steel are commonly used depending on corrosion resistance and mechanical requirements.
Can customized thread and knurl structures be produced?
Yes. Thread standards, knurl geometry, surface treatment, and dimensions can all be customized according to assembly requirements and application conditions.
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