Cross-grooved Machine Screw Assembly

The cross-grooved machine screw assembly combines a Phillips-head machine screw with integrated flat and spring washers, designed for rapid installation using standard Phillips screwdrivers. This all-in-one fastener eliminates loose washers and simplifies the assembly of automotive interior parts (dashboards, door panels), motorcycle covers, and light-duty hardware. By choosing the product, you can reduce labor time, lower assembly costs, and ensure consistent fastening in high-volume, non-structural applications.

Produced to ISO 4017, ISO 7045, and GB/T 9074.8 standards, the cross-grooved machine screw assembly is available in grades 4.8 and 5.8, using Q235 or 1010 low-carbon steel. Heat treatment and phosphating provide adequate strength and machinability. Surface finishes such as blue/white or zinc-plated are RoHS-compliant, with salt spray resistance of up to 240 hours for indoor or outdoor environments. The pre-assembled washers remain securely attached during handling and installation.

Thread sizes range from M2 to M8, with lengths from 3–50 mm and 6g thread accuracy. Head styles include pan head and countersunk, with Phillips drive sizes PH1, PH2, and PH3 to match common drivers. Cold forming ensures dimensional control (±0.03 mm), and rolled threads provide good engagement and even torque. We can customize thread size, length, head type, and finish for specialized light-duty assembly needs.

Our full-process quality control includes dimensional checks, washer adhesion tests, and torque verification, achieving a 99.9% pass rate. We offer convenient bulk packaging (bags, boxes) and selection support. The cross-grooved machine screw assembly delivers cost-effective, rapid fastening to help customers reduce light-assembly costs and boost production efficiency.