Introduce the whole production process including cold heading, thread rolling, surface treatment and precision inspection, analyze common defects and factory inspection specifications of micro screws.

Micro screw material determines the strength, anti-rust performance, conductivity and service life of precision equipment. This article comprehensively compares carbon steel, stainless steel and brass micro screws in hardness, toughness, rust resistance and conductivity, providing accurate selection solutions for 3C electronics, smart wearables, medical devices and instruments to solve screw fract

Micro screw assembly has an extremely narrow torque range. Excessive torque causes screw fracture and plastic shell cracking, while insufficient torque leads to vibration loosening, which are high-frequency defects in precision assembly. This article formulates torque standards for metal structures, plastic shells and thin-wall sheet metal, sorts process control points for automatic and manual loc

Precision micro screws are widely used in precision instruments, smart wearables, security electronics and medical equipment. Coating thickness, anti-rust process and surface cleanliness directly affect assembly accuracy and equipment stability. This article sorts differences of micro screw galvanizing, nickel plating, passivation, gold plating and tin plating, compares conductivity, rust resistan

Precision micro screws are widely used in smart wearables, sensors, optical instruments, security cameras and compact medical devices, mainly divided into machine screws and self-tapping screws. This article compares engagement principle, vibration resistance and applicable substrates of two thread types, lists thread solutions matching ABS, PC-GF, aluminum alloy and thin stainless steel via table

Insufficient hardness of M0.3~M2 micro screws causes thread slipping, excessive hardness leads to fracture during assembly. Residual magnetism of processed stainless micro screws interferes with smart wearable sensors and wireless charging modules. This article compares solution annealing hardness range & residual magnetic flux parameters of SUS201/304/316 micro screws via table, sorts full anneal

M0.3-M1.6 ultra-micro screws are divided into two crafts: thread-forming extrusion and thread-cutting tapping, with huge gaps in thread strength, assembly torque and matching sheet material. Wrong thread selection for smart watches, Bluetooth earphones and micro sensors leads to mass defects including thread slipping and screw fracture. This article compares mechanical thread parameters of two mic

M0.5-M2 ultra-fine micro screws are widely used in smart watches, Bluetooth earphones, hearing aids and micro endoscopes. Four mainstream materials include nickel-plated iron, SUS201, SUS304 and SUS316 stainless steel. This article compares hardness, wear resistance and salt spray parameters via table, formulates selection rules for indoor wearable and waterproof outdoor medical equipment, explain

Aiming at M0.5~M2 ultra-fine micro screws for wearable devices, hearing aids and camera modules, analyze three forming defects including thread burr, root crack and taper over-tolerance. Standardize micro thread roller tooth profile, rolling speed and wire annealing pre-treatment craft according to GB/T 196. Summarize sorting and full dimension inspection procedures to solve thread slipping and fi

Aiming at M0.5~M2 micro stainless steel & titanium screws for medical and consumer electronics, standardize full-set control procedures including constant temperature & humidity storage, vapor phase anti-rust packaging, batch turnover and long-term storage anti-rust. Distinguish storage parameters for three surface treatment parts: natural passivation, nickel plating and titanium alloy. Summarize