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MZ842-1 zinc alloy powder coated black MZ842-1B SUS304 stainless steel IP54 quarter turn L handle industrial cabinet lock B type cam shaft t=4mm square cutout 20.1mm 90 degree rotation left right hand reversible for electrical cabinets distribution boxes server racks machinery enclosures and outdoor equipment
MZ842-1 zinc alloy powder coated black MZ842-1B SUS304 stainless steel IP54 quarter turn L handle industrial cabinet lock B type cam shaft t=4mm square cutout 20.1mm 90 degree rotation left right hand reversible for electrical cabinets distribution boxes server racks machinery enclosures and outdoor equipment
MZ842-1 zinc alloy powder coated black MZ842-1B SUS304 stainless steel IP54 quarter turn L handle industrial cabinet lock B type cam shaft t=4mm square cutout 20.1mm 90 degree rotation left right hand reversible for electrical cabinets distribution boxes server racks machinery enclosures and outdoor equipment
MZ842-1 zinc alloy powder coated black MZ842-1B SUS304 stainless steel IP54 quarter turn L handle industrial cabinet lock B type cam shaft t=4mm square cutout 20.1mm 90 degree rotation left right hand reversible for electrical cabinets distribution boxes server racks machinery enclosures and outdoor equipment

MZ842-1 Zinc Alloy (Powder Coated Black) / MZ842-1B SUS304 Stainless Steel IP54 Quarter-Turn L-Handle Industrial Cabinet Lock

MZ842-1 black powder coat / SUS304 IP54 quarter-turn L-handle lock, B-type shaft, 2 variants.

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MZ842-1 Zinc Alloy (Powder Coated Black) / MZ842-1B SUS304 Stainless Steel IP54 Quarter-Turn L-Handle Industrial Cabinet Lock

Full Technical Specifications

  • Model Variants:
    • MZ842-1: Zinc alloy housing and handle, powder coated black finish, SUS304 lock panel, white zinc plated steel cam
    • MZ842-1B: SUS304 stainless steel housing and handle (natural/brushed finish)
  • Housing and Handle Material: Zinc alloy (MZ842-1) or SUS304 stainless steel (MZ842-1B)
  • Lock Panel Material: SUS304 stainless steel (MZ842-1)
  • Cam Material: Steel, white zinc plated
  • Surface Finish:
    • MZ842-1: Powder coated (black) handle and housing; white zinc plated cam
    • MZ842-1B: Natural SUS304 stainless steel finish
  • Protection Rating: IP54 (dust-protected, splash water resistant)
  • Operation Type: Quarter-turn (90° rotation) opening or closing
  • Hand Configuration: Reversible (RL — compatible with left and right hand)
  • Handle Type: L-shaped ergonomic handle with modern grooved design, 105mm height × 45±2mm grip, 15mm width
  • Housing Diameter: Φ32mm
  • Shaft Type: B-type cam shaft, t=4mm
  • Mounting Dimensions: H=25mm, GH=18mm, 37mm
  • Handle Feature: Φ10mm hole on handle side
  • Mounting Cutout: Square 20.1mm × 20.1mm (tolerance +0.2/0), with Φ22.5mm clearance
  • Mounting Method: Through-panel with nut fixation
  • Overall Side Height: 117mm
  • Rotation Angle: 90°
  • Core Features: Dual material options (zinc alloy black / SUS304), IP54 protection, ergonomic L-handle with grooved design, B-type cam shaft, square cutout mounting, quarter-turn 90° operation, left/right hand reversible, corrosion resistant, professional industrial appearance

MZ842-1 technical dimension drawing zinc alloy SUS304 quarter turn L handle lock IP54 square cutout mounting B type cam shaft size and variant specification

Core Product Features & Advantages

1 Dual Material Options for Flexible Application Matching

The lock is available in two material variants to suit different environmental and aesthetic requirements: MZ842-1 manufactured from zinc alloy with powder coated black finish offers cost-effective structural rigidity and a professional matte black industrial appearance for standard indoor applications, while MZ842-1B manufactured from premium SUS304 stainless steel provides superior corrosion resistance, oxidation resistance and hygienic easy-to-clean properties for outdoor, coastal, medical and food processing applications. This dual-material approach ensures optimal lock selection for any project environment.

2 Powder Coated Black or Natural SUS304 Finish

The zinc alloy variant features a durable powder coated black finish that creates a uniform matte black surface highly resistant to scratches, abrasion, UV fading and corrosion, matching standard black cabinet hardware for a cohesive industrial appearance. The SUS304 variant features a natural stainless steel finish that provides a sleek, hygienic metallic surface ideal for applications where corrosion resistance and cleanability are prioritized.

3 Ergonomic L-Handle with Modern Grooved Design

The ergonomic L-shaped handle (105mm height, 45±2mm grip) features a modern grooved design that enhances both aesthetics and grip. The extended lever provides enhanced leverage for easy, low-effort quarter-turn operation even when wearing work gloves, while the grooved detail adds a distinctive, contemporary visual element to the lock. The Φ10mm hole on the handle side provides additional functionality or attachment options.

4 IP54 Protection for Indoor Industrial Environments

The IP54 protection rating ensures the lock is dust-protected and resistant to splash water from any direction, making it suitable for indoor industrial environments including factories, workshops and equipment rooms where dust and occasional moisture exposure may occur. The robust construction provides reliable performance in standard industrial conditions.

5 B-Type Cam Shaft with Square Cutout Mounting

The B-type cam shaft (t=4mm) ensures positive, slip-free cam engagement for reliable latching. The square cutout mounting (20.1mm × 20.1mm, tolerance +0.2/0) with Φ22.5mm housing clearance ensures precise, rotation-free panel installation. The through-panel nut fixation provides secure, adjustable mounting for various panel thicknesses.

6 Left/Right Hand Reversible for Flexible Installation

The lock is reversible for both left-hand and right-hand door configurations (RL), reducing inventory requirements and simplifying procurement for projects with mixed door swing directions. The 90° quarter-turn mechanism enables quick, effortless opening and closing with a simple rotation of the handle, providing clear open/closed positioning.

Application Fields

  1. Electrical control cabinets, low-voltage distribution boxes, frequency converter enclosures and PLC equipment housings requiring secure quarter-turn locking
  2. CNC machine tool guards, automation equipment protective doors and industrial machinery access panels
  3. Server racks, data center enclosures, communication equipment cabinets and IT infrastructure housings
  4. Indoor communication cabinets, energy storage battery boxes and monitoring equipment enclosures (IP54 rated)
  5. Sheet metal tool cabinets, industrial console doors, workbench cabinets and premium storage enclosures
  6. Test bench cabinets, laboratory equipment enclosures and environmental monitoring control boxes
  7. High-end equipment enclosures, kiosks, point-of-sale systems and display cases requiring secure locking
  8. Outdoor monitoring equipment, weather-resistant instrument panels and coastal equipment enclosures (SUS304 MZ842-1B recommended)
  9. Food processing equipment, stainless steel sanitary cabinets and cleanroom facility enclosures (SUS304 MZ842-1B recommended for hygiene)
  10. Applications requiring IP54 protection, flexible material options (black zinc alloy / SUS304) and left/right reversible installation

Installation & Maintenance Guidelines

Step-by-Step Installation Procedures

  1. Select the appropriate material variant: MZ842-1 (zinc alloy, powder coated black) for indoor cost-effective use, or MZ842-1B (SUS304 stainless steel) for outdoor/corrosive/hygienic use
  2. Determine the door hand configuration (left or right) — the lock is reversible for both
  3. Determine the installation position on the cabinet door panel according to the dimension drawing
  4. Cut a square mounting hole of 20.1mm × 20.1mm (tolerance +0.2/0) in the cabinet door panel, ensuring clean, straight edges
  5. Ensure the sealing gasket is properly positioned on the lock housing flange
  6. Insert the B-type cam shaft through the square cutout from the front of the door panel
  7. From the rear of the door panel, install the nut and tighten to secure the lock to the panel, adjusting for the specific panel thickness
  8. Install the appropriate B-type cam (t=4mm) on the shaft, aligning for positive engagement
  9. Test the quarter-turn 90° operation to verify smooth locking and unlocking
  10. Confirm the handle orientation matches the door hand configuration (left or right)
  11. Adjust the cam position if needed to achieve proper door latching and consistent gap spacing

Installation Quantity Recommendation

  • Standard single cabinet door: Install 1 quarter-turn L-handle lock centered vertically on the door
  • Tall or wide doors (>1200mm height): Install 2 locks (top and bottom) or 1 lock with additional hinge support
  • Note: Ensure the B-type cam is properly sized for the specific cabinet door-frame configuration to achieve secure latching

Maintenance Instructions

  1. MZ842-1 (zinc alloy, powder coated black): Suitable for indoor industrial environments with IP54 protection; not recommended for long-term direct outdoor exposure, coastal salt spray or severe chemical environments
  2. MZ842-1B (SUS304 stainless steel): Suitable for both indoor and sheltered outdoor environments, including damp, coastal and mildly corrosive conditions
  3. Wipe the handle and housing periodically with a soft dry or slightly damp cloth to remove dust and grease:
    • For powder coated black (MZ842-1): avoid abrasive cleaners or scouring pads that may scratch the powder coat finish
    • For SUS304 (MZ842-1B): use a microfiber cloth to maintain the finish and avoid abrasive cleaners
  4. Check the mounting nut tightness quarterly to prevent loosening from vibration
  5. Inspect the sealing gasket annually for any signs of cracking, deformation or wear; replace if the IP54 seal is compromised
  6. MZ842-1: Inspect the powder coated black finish annually for chips or scratches; touch up with matching black paint if necessary to maintain corrosion protection
  7. MZ842-1B: Inspect the SUS304 surface annually for scratches or corrosion; for coastal applications, rinse with fresh water periodically to remove salt deposits
  8. Test the quarter-turn 90° operation quarterly to verify smooth locking and unlocking; lubricate the B-type shaft if any binding is detected
  9. Verify that the cam remains securely attached to the shaft and provides consistent latching force
  10. Inspect the Φ10mm handle hole annually to ensure it remains clear and functional

Product Summary

MZ842-1 is a quarter-turn L-handle industrial cabinet lock available in two material variants: MZ842-1 manufactured from zinc alloy with powder coated black finish and SUS304 lock panel, and MZ842-1B manufactured from premium SUS304 stainless steel. Both variants feature IP54 protection, B-type cam shaft (t=4mm), square cutout mounting (20.1mm), 90° quarter-turn operation, ergonomic L-handle with modern grooved design and left/right hand reversibility. Its dual material options provide flexible application matching for indoor cost-effective use or outdoor/corrosive/hygienic environments, the powder coated black or natural SUS304 finish offers professional appearance and wear resistance, the ergonomic handle enables comfortable high-torque gloved operation, the IP54 sealing ensures reliable dust and splash protection, and the square cutout mounting ensures straightforward rotation-free installation. With its robust performance, material flexibility and professional appearance, it is an ideal locking solution for electrical cabinets, distribution boxes, server racks, communication equipment, machinery enclosures, outdoor enclosures, food processing equipment and various industrial applications requiring secure, weather-resistant quarter-turn handle locking hardware with flexible material options.