CL209-1C 42×32mm Compact Zinc Alloy Bright Chrome Plated Butt Hinge with SUS304 Pin & 4 Embedded M5 External Threaded Studs

Full Technical Specifications

• Model Number: CL209-1C
• Main Body Material: High-pressure die-cast Zinc Alloy
• Rotating Pivot Pin: SUS304 Stainless Steel
• Surface Treatment: Bright Electroplated Chrome Finish
• Overall Outer Dimension: 42mm (H) × 32mm (W)
• Plate Thickness: 5mm
• Vertical Hole Center Distance: 30mm
• Horizontal Hole Center Distance: 20mm
• Mounting Method: 4 integrated M5 external threaded studs (through-panel nut locking)
• Total Protruding Height of Studs: 10.5mm

Core Product Features & Competitive Advantages

2.1 Composite Material Structure for Durable Rotation

The hinge body adopts precision die-cast zinc alloy, featuring high structural integrity and smooth folding performance. The core rotating shaft is upgraded to SUS304 stainless steel pin, which effectively reduces friction during frequent opening and closing, prevents pin rust, oxidation and jamming, greatly extending the service life compared to full zinc alloy pins.

2.2 Bright Chrome Plating for Anti-Corrosion & Premium Appearance

Mirror bright chrome electroplating forms a dense protective layer on the zinc alloy surface. It resists indoor dust, fingerprints and slight moisture erosion, avoiding oxidation and discoloration. The sleek metallic look improves the visual grade of small equipment cabinets and control boxes.

2.3 Four Built-In M5 Threaded Studs for Fast Through-Panel Installation

Four M5 external threaded posts are integrally formed on the hinge leaf. Installation only requires drilling matching holes on the cabinet door and frame, passing the studs through panels and locking with hex nuts on the back side. No tapping or countersinking is needed, highly efficient for mass production assembly lines, especially suitable for hollow frames and thin sheet metal shells.

2.4 Mini Compact Size for Narrow Installation Spaces

Only 42×32mm overall footprint, ultra-small volume perfectly fits miniature junction boxes, testing instrument casings, small automation control panels and limited-gap cabinet structures. Rounded edge design avoids scratching operators and equipment wires.

2.5 Multi-Knuckle Hinge Knuckle for Even Force Bearing

Segmented multi-section knuckle design distributes door weight evenly across the pivot point, effectively preventing cabinet door sagging, loose pivots and abnormal noise after long-term repeated use, delivering stable load-bearing performance for small and medium-sized metal doors.

Main Application Scenarios

1. Mini electrical distribution boxes, small PLC control panels, terminal wiring enclosures
2. Laboratory testing instruments, portable inspection equipment, precision device protective casings
3. Network weak current small cabinets, communication module boxes and industrial sensor housings
4. Automation equipment side access panels, medical indoor small devices and charging equipment shells
5. Standardized batch production of compact sheet metal equipment enclosures with bolt-through assembly requirements

Selection & Installation Operation Guide

4.1 Installation Steps

1. Drill 5mm through holes on cabinet door and fixed frame according to 30mm × 20mm hole spacing.
2. Insert the four M5 threaded studs through the reserved holes respectively.
3. Secure each stud with a lock nut on the reverse side of the panel and tighten evenly.
4. Test opening and closing flexibility, adjust nut tightness if rotation is too loose or tight.

4.2 Installation Quantity Recommendation

For door width ≤350mm, install 2 sets of CL209-1C hinges symmetrically; increase to 3 hinges for taller or heavier door panels to share load pressure.

4.3 Maintenance Reminders

Designed for dry indoor working environments, do not use in high-humidity, corrosive, dusty workshops. Regularly wipe the chrome-plated surface with a dry cloth; apply a small amount of anti-rust lubricant on the SUS304 pivot pin periodically to keep rotation smooth.

Product Summary

CL209-1C is a mini-size bolt-on industrial butt hinge constructed with zinc alloy bright chrome plated body and SUS304 stainless steel wear-resistant pin. Equipped with four integrated M5 external threaded studs for convenient through-nut locking installation, this compact 42×32mm hinge is a cost-effective standardized hardware solution for small indoor electrical cabinets, testing instruments and miniature sheet metal equipment enclosures.

CL209-1C zinc alloy bright chrome plated butt hinge SUS304 pivot pin 42×32mm embedded M5 threaded stud cabinet hinge