304 stainless steel nylon lock hex nut M3/M4, self-locking screw cap M5/M6/M8

Product Specification

The core advantages of 304 stainless steel lock nuts are "corrosion resistance, rust prevention, anti-loosening and shock resistance, long-lasting fastening, and wide adaptability."

1. 304 stainless steel material, featuring all-scenario corrosion and rust resistance with an alloy ratio of 18% chromium + 8% nickel, forms a dense oxide film on the surface, which can withstand the erosion of moisture, salt spray (non-coastal high concentration), mild acid and alkali, and daily cleaning agents. It remains rust-free and corrosion-resistant in outdoor, kitchen and bathroom, and humid workshop environments even after long-term use; there is no risk of plating peeling off, avoiding rust stains on workpieces or jamming threads caused by the peeling of carbon steel nut plating
2. The anti-loose structure design ensures anti-seismic and anti-vibration without loosening. Common anti-loose structures (nylon locking rings, all-metal locking, serrated anti-loose) can fundamentally solve the problem of loosening caused by vibration: Nylon ring type: The nut is equipped with a built-in nylon locking ring. After tightening, the nylon ring engages tightly with the bolt threads, forming elastic squeezing resistance, effectively preventing thread loosening. It is suitable for high-frequency vibration scenarios such as motors, water pumps, and automotive parts; All-metal type: It achieves mechanical locking by locally deforming the nut threads or engaging the serrated end surface with the workpiece, and is resistant to high temperatures (can withstand temperatures above 200°C). It is suitable for working conditions such as engines and high-temperature equipment; Compared to the combination of ordinary nuts and spring washers, the anti-loose reliability is improved by more than 80%, and it can maintain the fastening effect even in strong vibration environments.
3. It is fastened, durable, and stable, with precise thread engagement and a thread accuracy of 6H tolerance. It has a high degree of fit with the bolt and exerts uniform force after tightening. The continuous locking force of the anti-loose structure can offset the vibration and impact during equipment operation, avoiding component displacement, abnormal noise, and even failure caused by loosening. It is suitable for equipment that requires long-term stable operation (such as photovoltaic supports, communication base stations, and construction machinery).

Shenzhen Huayuanxing Precision Hardware Co., Ltd. is a manufacturer specializing in the development, production, and sales of screw fasteners, with 20 years of industry experience. Huayuanxing screws are characterized by precision, miniaturization, and firmness. The company's existing factory covers an area of over 8,000 square meters, with a finished product warehouse of over 4,000 square meters and a stock inventory of over 3,000 tons. It has successively introduced more than 250 precision production equipment, including cold heading machines, thread rolling machines, and thread milling machines, capable of producing small screws with an outer diameter of 1mm and a length of 3mm, with an average daily production capacity of up to 20 million pieces. Huayuanxing has complete inspection equipment, including salt spray testing machines and 2D imaging detectors. It currently employs more than 50 people, including 8 engineering and technical personnel with 20 years of industry experience