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Optimized Recess Design: Patented six-point star recess with even torque distribution, withstanding up to 50N·m high torque. It eliminates cam-out and avoids screw/tool damage—ideal for vibration-prone automotive engines and industrial pumps.
Fast Automated Alignment: The self-centering feature cuts tool alignment time by 40% for automated production lines, offering full compatibility with torque-controlled tools for repeatable precision in quality-critical industries.
Shoulder screws are widely used in scenarios where there are clear requirements for precise axial positioning and consistent load-bearing spacing.
Secure circuit boards, connectors, and device housings without nicking sensitive parts. Widely used for custom IoT gadgets and medical monitors—where a loose screw or bad fit could ruin thousands of dollars in gear.
Hold small mechanical bits in engines, interiors, and electrical systems—standing up to intense vibration and temperature swings that break cheap screws. Perfect for custom builds and OEM-standard replacement parts.
Fit custom fixtures, tooling, and equipment assemblies. Trusted by manufacturers for CNC machines and production lines where even a fractional deviation can throw an entire operation off track.
Production Craft: Certified raw materials undergo ultrasonic testing to eliminate internal flaws. Heads are formed with 100–200 tons cold-forging for dense, defect-free grain structures, paired with cold-rolled threads providing 20% higher tensile strength than cut threads for smoother insertion.
Rigorous Testing: Features batch laser dimension verification (±0.01mm accuracy), tensile and yield load tests, and Class 6H thread pitch inspections. Anti-loosening durability is proven through ASTM B117 salt spray tests (12–150h) and 10–2000Hz vibration tests, guaranteeing zero defective shipments.
Technical Expertise: Over 30 years of engineering prowess providing complete end-to-end support—from material selection and torque calculation to on-site assembly guidance tailored to your project's technical specifications.
Customization Leadership: Specialized manufacturing for non-standard configurations, including exotic titanium and Inconel alloys for extreme duty environments. Rapid turnaround delivers custom samples in just 10–30 days.
Quality & Delivery Commitment: Total transparency with every batch, complete with comprehensive Mill Test Certificates (MTC) and full ISO compliance documentation.
Thanks to the patented six-point star recess design that distributes torque evenly, these screws can withstand up to 50N·m of high torque while eliminating cam-out and protecting both the drive head and installation tools.
We offer thread sizes ranging from M1.6 through M18 in standard, fine, or coarse pitches, with lengths from 3 mm to 120 mm. Custom configurations like reinforced heads, stepped shafts, and grooved bodies are manufactured within a strict tolerance of ±0.02 mm.
Options include RoHS-compliant zinc plating (50h salt spray resistance), polished nickel plating for corrosion resistance, black oxidation to reduce friction by 50% for moving assemblies, and PTFE coatings designed to withstand temperatures from -40°C to 260°C.
Every batch undergoes ultrasonic material screening, 100–200 ton cold-forging, cold-rolled threading (yielding 20% higher tensile strength), laser dimension checks (±0.01mm accuracy), Class 6H thread inspections, and ASTM B117 salt spray & vibration testing.
We deliver fully engineered custom samples within 10 to 30 days, complete with Mill Test Certificates (MTC) and comprehensive ISO quality compliance documentation.
Yes. The self-centering star drive design reduces tool alignment time by up to 40% on automated production lines and is fully compatible with torque-controlled automated fastening systems.
