CL226-30 (Zinc Alloy) & CL226-30S (SUS304 Stainless Steel) 30×30mm 180° Countersunk Mini Butt Hinges

1. Full Technical Parameters

Shared Parameters

• Opening Angle: Max 180°
• Overall Size: 30mm L × 30mm W, thickness 6.5mm
• Mounting Holes: 4 holes Φ4.1, Φ8.1×90° countersunk sink holes
• Pin Structure: Integrated solid rotating pin, smooth wobble-free rotation

2. Core Product Features & Advantages

2.1 Dual Material Selection to Cover All Working Scenarios

• Zinc alloy version CL226-30: High-pressure die-cast integrated molding, good structural rigidity, white zinc electroplating effectively prevents indoor oxidation, cost-effective for mass standard equipment.
• SUS304 stainless steel version CL226-30S: Whole stainless steel stamping & forming, mirror grinding surface, completely resistant to rust, water vapor, salt spray and weak chemical corrosion, long service life in harsh environments.

2.2 Ultra-Compact 30×30mm Mini Square Design

Super small footprint occupies minimal installation space, specially developed for miniature control boxes, portable testing devices and slim-profile equipment panels, will not interfere with internal layout and wiring.

2.3 90° Countersunk Holes for Hidden Flush Installation

Four standard countersunk holes allow flat head screws to fully sink into the hinge plate, no protruding fasteners on the enclosure surface, neat appearance, avoid screw scratch and accidental collision damage.

2.4 Stable 180° Full Flat Opening

180-degree maximum flip angle lays the door flat alongside the cabinet frame, zero blocking during circuit inspection, part replacement and equipment debugging, greatly improve operational convenience.

2.5 Precision Integrated Rotation Pin

Tightly fitted solid central pin ensures low friction rotation, no looseness or gap expansion after thousands of opening cycles, stable and durable for long-term continuous use.

3. Wide Application Range

1. Mini electrical junction boxes, small PLC controllers, sensor housings and low-power terminal cabinets
2. Laboratory portable measuring instruments, analytical detection equipment, medical miniature inspection devices
3. Outdoor waterproof monitoring casings, small lithium battery boxes, marine damp environment equipment enclosures (prefer CL226-30S SUS304)
4. Aluminum profile small frames, light automation actuator protective covers, DIY equipment shell hinges
5. Office small equipment casings, test fixtures, electronic device access panels

4. Installation & Maintenance Guide

Installation Steps

1. Mark hole positions according to dimension drawing, drill Φ4.1 through holes and process 90° counterbore
2. Attach hinge flat on the mounting surface
3. Lock with M4 flat head screws for fully flush hidden fixing
4. Test 180° opening smoothness and fastening tightness

Installation Quantity Suggestion

• Door height ≤300mm: 2 hinges symmetrically mounted
• Door height 300–500mm: 3 hinges to prevent deflection

Maintenance Tips

1. CL226-30 zinc alloy version: Avoid long-term immersion in water and corrosive liquid; wipe surface dust regularly
2. CL226-30S SUS304 version: Only need regular cleaning, no rust concern for outdoor/wet use
3. Add tiny dry lubricant on the rotation pin every 6 months for quieter operation

5. Product Summary

CL226-30 and CL226-30S are 30×30mm tiny 180° flush mount butt hinges with two material options. CL226-30 zinc alloy with white zinc plating is cost-effective for indoor general equipment, while CL226-30S SUS304 polished stainless steel offers superior anti-corrosion performance for outdoor and harsh environments. With countersunk hidden installation and reliable 180° opening, they are standard small-size hardware for instruments, micro control cabinets and light industrial equipment.

CL226-30S SUS304 stainless steel hinge CL226-30 zinc alloy 30×30mm 180 degree countersunk hole small equipment cabinet hinge white zinc plated polished hinge