| Parameter | Specification |
|---|---|
| Product Name | Zinc Plated Nylon Top Domed Cap Nut |
| Product Type | Nylon Tip Acorn Nut / Hex Domed Protective Nut |
| Material | Grade 4.8 Carbon Steel + PA66 Nylon Dome Tip |
| Surface Finish | Blue White Electro Zinc Plated |
| Thread Type | Metric Standard Internal Thread |
| Standard Compliance | DIN 917, GB/T 923, ISO Fastener Standard |
| OEM Service | Available |
| ODM Service | Available |
| Custom Manufacturing | Custom Sizes According to Drawings or Samples |
| Standard Sizes | M3 – M16 |
| Salt Spray Resistance | 48–96 Hours |
| Applications | Precision Instruments, Household Appliances, Furniture Hardware, Medical Equipment, Electronic Devices, Anti-scratch Decorative Assembly |
Zinc Plated Nylon Top Domed Cap Nut
The Zinc Plated Nylon Top Domed Cap Nut is a dual-function fastener combining threaded fastening, anti-scratch protection and vibration buffering. It consists of a standard hex carbon steel nut body and a protruding PA66 nylon dome tip, which covers bolt ends to eliminate sharp edges and avoid surface scratches on contact workpieces.
Manufactured from Grade 4.8 carbon steel, the hex nut body provides stable tensile strength for medium-load assembly. The surface undergoes blue white zinc plating to form a bright anti-rust coating that resists oxidation in indoor environments. The integrated PA66 nylon tip features high elasticity and wear resistance, effectively buffering vibration contact and preventing metal-to-metal scratch damage on delicate plastic, painted and metal surfaces.
The six-sided outer profile fits standard spanners and sockets for quick installation. Precision internal threads match metric bolts smoothly for uniform clamping force. The solid nylon dome fully encloses exposed bolt threads, while the elastic nylon structure delivers slight shock absorption during equipment operation, reducing loosening risk caused by micro-vibration.
Nylon top domed cap nuts are widely applied to precision instrument casings, small home appliance internal frames, furniture decorative connections, medical device housings and electronic equipment assemblies. It solves the common problem of metal acorn nuts scratching finished workpieces, making it ideal for finished-surface assembly projects requiring both fastening and surface protection.
We provide full OEM and ODM custom manufacturing services, supporting tailor-made production based on customer drawings, samples and custom nylon hardness requirements. Custom thread sizes, nylon dome height, plating thickness and export packaging can be customized for electronic, medical and furniture hardware clients. Private laser marking and custom brand printing services are also available for hardware distributors and equipment manufacturers.
Each Zinc Plated Nylon Top Domed Cap Nut passes strict quality inspections including dimensional check, thread precision test, nylon tip adhesion test and coating uniformity test before delivery, ensuring precise thread tolerance, firm nylon assembly and consistent anti-corrosion zinc coating for all batches.
