CL252-1 38×37mm SUS304 Stainless Steel 180° Mirror Polished Mini Butt Hinge

Full Technical Specifications

Model Number: CL252-1
Overall Dimensions: 38mm total width (20.5mm + 17.5mm leaves) × 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, 14.5mm + 11.5mm horizontal spacing
Side Profile: 14.5mm barrel height, 2mm leaf thickness
Core Features: Compact mini size, full SUS304 corrosion resistance, mirror polished aesthetic, flush countersunk mounting

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 Compact Mini Footprint for Space-Limited Applications

With a compact 38×37mm 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.

4 180° 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.

5 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 14.5+11.5mm horizontal spacing ensures secure and stable installation on small cabinet doors.

6 Smooth Precision Rotation

The precision-machined barrel and pin assembly ensures tight clearance, low-friction rotation and minimal wobble, delivering smooth and quiet operation over tens of thousands of open-close cycles. The robust construction resists sagging and deformation even under repeated use.

Application Fields

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

Installation & Maintenance Guidelines

Step-by-Step Installation Procedures

Determine the installation positions on both the cabinet frame and door panel according to the dimension drawing
Mark and drill 4×Φ5.2 through holes at 22.5mm vertical × (14.5+11.5)mm horizontal spacing, then machine 90° countersunk counterbores to Φ8 diameter
Align the hinge halves against the mounting surfaces and fasten with M5 flat head screws through all four countersunk holes
Test the 180° opening movement for smooth rotation and verify hinge stability
Adjust the hinge position slightly if needed to achieve proper door alignment and consistent gap spacing
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

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
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
Apply a small amount of dry lubricant to the pivot pin every six months to maintain smooth and quiet rotation
Check mounting screw tightness quarterly to prevent loosening from vibration
Inspect the polished surface annually for scratches or corrosion; for coastal applications, rinse with fresh water periodically to remove salt deposits

Product Summary

CL252-1 is a compact 38×37mm mini butt hinge manufactured from premium SUS304 stainless steel with precision mirror polishing. Its full stainless steel corrosion resistance, highly reflective polished finish, 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 and a premium polished appearance.

CL252-1 SUS304 stainless steel mirror polished mini butt hinge 180 degree 4-Φ5.2 countersunk holes 38x37mm small industrial cabinet equipment hinge