CL253-1 35×37mm SUS304 Stainless Steel 180° Mirror Polished Mini Butt Hinge with Rounded Corners

Full Technical Specifications

• Model Number: CL253-1
• Overall Dimensions: 35mm total width × 37mm height × 2mm leaf thickness
• Maximum Opening Angle: 180°
• Material: SUS304 stainless steel
• Surface Finish: Mirror polishing (highly reflective polished finish, corrosion-resistant, premium appearance)
• Mounting Holes: 4 pieces Φ5.2 holes with Φ8×90° countersunk counterbores
• Hole Center Distances: 22.5mm vertical spacing, 23mm horizontal spacing
• Side Profile: 2mm leaf thickness
• Design Feature: Rounded corners for safe, snag-free installation
• Core Features: Compact mini size, full SUS304 corrosion resistance, mirror polished aesthetic, flush countersunk mounting, rounded corner safety design

Core Product Features & Advantages

1 Premium SUS304 Stainless Steel Construction

The entire hinge is fabricated from SUS304 stainless steel, providing excellent corrosion resistance, oxidation resistance and structural durability. Suitable for both indoor and outdoor environments, including damp, coastal and mildly corrosive conditions, it maintains reliable performance over years of service without rusting or degrading.

2 Mirror Polished Finish for High-End Aesthetic Appearance

The precision mirror polishing creates a highly reflective, sleek metallic surface that elevates the visual quality of any equipment enclosure. In addition to its premium appearance, the polished surface resists fingerprints, is easy to clean and provides an extra layer of corrosion protection, making it ideal for medical, laboratory and cleanroom applications where hygiene and appearance are critical.

3 Rounded Corner Design for Safety and Aesthetics

The rounded corner design eliminates sharp edges, reducing the risk of cuts and scratches during installation and operation. This safety-conscious design also creates a softer, more refined appearance that is particularly suitable for medical equipment, laboratory instruments, consumer-facing enclosures and applications where user safety is a priority.

4 Compact Mini Footprint for Space-Limited Applications

With a compact 35×37mm overall size and 2mm leaf thickness, this hinge is specifically designed for small and medium-sized equipment enclosures where installation space is limited. The mini footprint allows it to fit neatly on compact instrument panels, small control boxes and precision device housings without occupying excessive surface area.

5 180° Full Flat Opening Angle

The 180-degree maximum opening angle enables the cabinet door to lay completely flat, eliminating operational blind zones and providing full unobstructed access for internal wiring, component replacement, equipment inspection and routine maintenance work on small enclosures.

6 Four-Point Countersunk Flush Mounting

The 4×Φ5.2 mounting holes with Φ8×90° countersunk counterbores allow M5 flat head screws to sink completely flush with the hinge surface, creating a smooth, snag-free exterior. The four-point fixation pattern with 22.5mm vertical and 23mm horizontal spacing ensures secure and stable installation on small cabinet doors.

Application Fields

1. Small electrical control boxes, compact PLC enclosures, terminal junction boxes and low-voltage distribution cabinets
2. Medical equipment housings, portable diagnostic devices, laboratory analytical instruments and environmental monitoring control boxes
3. Communication equipment cabinets, indoor/outdoor server boxes and compact signal transfer enclosures
4. Food processing equipment, stainless steel sanitary cabinets and cleanroom facility enclosures
5. Precision instrument panels, electronic test equipment casings and measurement device housings
6. Outdoor monitoring equipment, weather-resistant instrument panels and small coastal equipment enclosures
7. Premium compact furniture, electronic equipment casings and decorative enclosures where polished appearance is preferred
8. Marine and boat equipment, RV accessories and outdoor fixtures requiring corrosion-resistant stainless steel hardware

Installation & Maintenance Guidelines

Step-by-Step Installation Procedures

1. Determine the installation positions on both the cabinet frame and door panel according to the dimension drawing
2. Mark and drill 4×Φ5.2 through holes at 22.5mm vertical × 23mm horizontal spacing, then machine 90° countersunk counterbores to Φ8 diameter
3. Align the hinge halves against the mounting surfaces and fasten with M5 flat head screws through all four countersunk holes
4. Test the 180° opening movement for smooth rotation and verify hinge stability
5. Adjust the hinge position slightly if needed to achieve proper door alignment and consistent gap spacing
6. Confirm that all screw heads are flush with the hinge surface and do not protrude

Installation Quantity Recommendation

• Door height ≤300mm: Install 2 hinges symmetrically
• Door height 300mm to 600mm or medium-weight door: Install 3 hinges for balanced load distribution

Maintenance Instructions

1. Suitable for both indoor and outdoor environments, including damp, coastal and mildly corrosive conditions; for extreme salt spray or strong chemical environments, regular rinsing with fresh water is recommended
2. Wipe the mirror polished surface periodically with a soft dry or slightly damp microfiber cloth to remove dust, fingerprints and grease; avoid abrasive cleaners or scouring pads that may scratch the mirror finish
3. Apply a small amount of dry lubricant to the pivot pin every six months to maintain smooth and quiet rotation
4. Check mounting screw tightness quarterly to prevent loosening from vibration
5. Inspect the polished surface annually for scratches or corrosion; for coastal applications, rinse with fresh water periodically to remove salt deposits

Product Summary

CL253-1 is a compact 35×37mm mini butt hinge with rounded corners, manufactured from premium SUS304 stainless steel with precision mirror polishing. Its full stainless steel corrosion resistance, highly reflective polished finish, safe rounded corner design, four-point countersunk flush mounting and 180° full opening angle make it an ideal hardware solution for small electrical cabinets, medical equipment, laboratory instruments, communication devices, outdoor enclosures and various precision applications requiring compact size, durability, safety and a premium polished appearance.

CL253-1 SUS304 stainless steel mirror polished mini butt hinge 180 degree 4-Φ5.2 countersunk holes 35x37mm rounded corner small industrial cabinet equipment hinge