High Corrosion Resistance Copper Column Screw with Anti-Rotation Knurled Design

Situo Hardware specializes in custom manufacturing of security copper column screws, knurled isolation copper studs and single & double pass spacer pillars. The products are widely used in security monitoring equipment, electronic chassis, industrial control devices and PCB circuit boards, serving as professional precision brass fasteners for isolation support, heightening positioning and fastening of surveillance cameras and security electronic equipment.

This series of security knurled copper pillars is integrally precision-molded from high-quality brass, including multiple structures such as single-pass, double-pass, solid and through types. The outer wall anti-slip knurl design provides excellent anti-rotation and anti-drop performance. With good insulation, isolation and heat dissipation properties, it effectively solves common problems such as PCB short circuit, insufficient spacing and loose assembly of security equipment. Standard specifications are in stock, and full non-standard customization of special sizes and structures is available to meet equipment R&D and modification needs.

• Anti-Rotation Knurled Design, Stable & Anti-Loose: The precise anti-slip knurl texture on the pillar body ensures tight embedding with the mounting hole after pressing assembly. It provides strong anti-rotation, anti-slip and anti-shake capabilities, effectively avoiding idle rotation, loosening and falling off caused by long-term equipment vibration.
• High-Purity Brass Material, Excellent Insulation & Heat Dissipation: Made of high-density pure brass with uniform texture, it features reliable insulation isolation and excellent thermal conductivity. It effectively isolates the PCB board from the chassis shell to prevent short circuit and electric leakage, while assisting equipment heat dissipation.
• Multiple Structure Options, Full-Scenario Compatibility: Available in single-pass, double-pass and through-hole structures. Single-head screw pillars are suitable for single-side locking and fixing, while double-pass pillars adapt to double-layer board docking assembly.
• Precision Thread Processing, Smooth & Durable Meshing: Adopting precise thread rolling and turning technology, the threads are full, standard and burr-free. The screws fit smoothly without jamming, maintaining stable locking accuracy after repeated disassembly and assembly.
• Burr-Free Precision Finish, Suitable for Mass Automation Production: Full CNC precision machining ensures flat end faces, straight pillar bodies and smooth edges without burrs. No secondary trimming is required, improving assembly efficiency for automated production lines.
• Vibration & Fatigue Resistant, Long Service Life: Brass material has excellent toughness and anti-fatigue performance, adapting to long-term wall-mounted and micro-vibration working conditions of monitoring equipment.
• Full Non-Standard Customization: Customizable height, outer diameter, thread pitch, knurl pattern and step structure. Supporting new product R&D, mold modification and special structural matching for security equipment.

• Isolation support and PCB heightening fixing for surveillance cameras and network cameras
• Electronic board positioning fasteners for security alarms, access control and temperature measurement equipment
• PCB isolation and short-circuit prevention spacer pillars for industrial control and electronic chassis
• Internal supporting fasteners for smart home security and vehicle-mounted security electronic devices
• Double-layer circuit board docking assembly, equipment heightening and insulation isolation scenarios
• Anti-rotation and anti-slip supporting copper pillar accessories for all kinds of security electronic precision equipment

We focus on customized production of brass precision fasteners for security and industrial control equipment. Full production workflow: material screening & cutting → CNC precision turning → knurl forming → thread finishing → polishing & deburring → full dimension inspection → thread gauge testing → sorting & packaging.

Standard M2/M3/M4 security copper pillars are in stock with fast delivery, and non-standard products support rapid sample making and mass production. We provide complete material test reports and quality certificates, supporting engineering bulk packaging and export-grade packaging.

We have introduced advanced equipment and technology from Japan and Germany (CNC 5-axis and 6-axis machines) to better serve our customers' needs.

Our maximum processing outer diameter is 60, and the minimum control tolerance is 0.001. We have Japanese CNC Tsugami, CNC Citizen, multi-station cold extrusion forming machines, 500T press machines, casting equipment, and various process equipment.

Our company has a total of 300 employees, including 20 technicians, 10 engineers, and 15 quality control personnel. We have over 300 pieces of equipment.

Our company implements 8S management and has passed ISO9001 and TS16949 automotive certifications.

Our customers include bo-sch, Foxconn, Motors, Husqvarna, Shimano, NVIDIA, DJI Drones, Siegenia, and Cater-pillar.