R5101-105K SPCC Nickel Plated Spring Toggle Latch with Padlock Hole, Heavy Duty Industrial Fastener

NRH R5101-105K Heavy Duty Toggle Latch - Padlock Hole, Nickel Plated, 40kg Load, Industrial Security

The NRH R5101-105K is a heavy‑duty industrial toggle latch that combines strong mechanical clamping with physical theft deterrence. Constructed from SPCC cold‑rolled steel with a bright nickel plating, it offers excellent strength, good corrosion resistance, and a professional metallic finish. The core security feature is the integrated Φ5.5mm padlock hole on the latch hook - allowing a standard padlock to be added, upgrading security from “fastened” to “physically locked.” The over‑center mechanism delivers a powerful 392N (40kg) tensile load for tight, vibration‑resistant closure. Weighing 86g and with a compact overall length of 105.5mm and mounting plate width of 39.5mm, it is ideal for high‑value industrial cabinets, machinery guards, and outdoor enclosures. Clear “NRH” branding ensures authenticity and quality.

As a product of NRH Box Hardware (specialist since 1996), this latch is manufactured under an ISO 9001 certified system. Regarding international compliance (ISO 9001, SGS, REACH, SVHC), these standards can be supported based on customer requirements - contact us for details. OEM/ODM services are available for custom hole patterns, lever lengths, or logo engraving. Full 2D/3D CAD models available upon request.

Key dimensions: overall length 105.5mm, mounting plate width 39.5mm, hook section height 47mm, material thickness 1.5mm, mounting holes 4×Φ5mm, padlock hole diameter Φ5.5mm. Refer to the engineering drawing for complete dimensional data.

Why Nickel Plated Steel + Padlock Hole?

SPCC cold‑rolled steel provides excellent formability and strength at a cost‑effective price point. The nickel plating adds a bright, corrosion‑resistant surface that outlasts standard zinc plating in many indoor and sheltered outdoor applications. Nickel also offers a warmer silver sheen and better wear resistance. The integrated padlock hole is a critical security upgrade:

• Physical theft deterrence - a padlock prevents the latch from being opened without a key
• Tamper evidence - security seals or wire ties can be used for audit trails
• LOTO compliance - allows padlock to be added for Lockout/Tagout procedures during maintenance
• Ready to use - no drilling or modification required; hole is factory‑integrated

Primary Applications - High Security & Heavy Duty

• High‑value industrial cabinets - server racks, network cabinets, power distribution units - lock to prevent unauthorized access
• Machinery safety guards & access hatches - secure heavy guards with option for safety padlock (LOTO)
• Outdoor infrastructure & communication cabinets - base stations, power utilities, weather‑resistant locking
• Secure tool & material storage - heavy‑duty tool chests, maintenance parts bins, high‑value instrument cases

How It Works - Over‑Center Toggle with Padlock Security

The latch operates on a classic over‑center toggle mechanism. When the lever is pressed down, the hook engages a strike plate and passes its mechanical center point, creating a self‑locking hold that resists vibration and accidental opening. The 40kg (392N) clamping force pulls the two surfaces tightly together for a rattle‑free seal. To add security, insert a standard padlock through the Φ5.5mm padlock hole. The shackle physically prevents the hook from being lifted, making unauthorized opening impossible without cutting the lock. This dual‑layer security (mechanical latch + padlock) is essential for assets in public, unmonitored, or high‑theft areas.

Key Advantages

• Padlock‑ready security - integrated Φ5.5mm hole accepts standard padlocks for theft deterrence and LOTO
• 40kg (392N) holding force - powerful clamping for heavy doors, lids, and panels
• Nickel‑plated steel construction - SPCC core with bright nickel finish, good corrosion resistance, professional appearance
• Compact, robust dimensions - 105.5mm length, 39.5mm width, 86g weight - strong yet manageable
• Tool‑free operation - one‑handed open/close, no special tools needed for daily access
• Precision mounting - 4×Φ5mm holes with 1.5mm material thickness for secure installation
• OEM/ODM ready - custom hole sizes, lever shapes, logo engraving available

Technical Specifications

• Brand: NRH Box Hardware
• Model Number: R5101-105K
• Product Name: Toggle Latch (Lockable)
• Material: SPCC Cold‑Rolled Steel + Nickel Plating
• Finish: Nickel Plating
• Security Feature: Integrated Padlock Hole - Φ5.5mm
• Net Weight: 86g
• Tensile Load: 392N (40kg)
• Key Dimensions: Overall Length 105.5mm, Mounting Plate Width 39.5mm, Hook Height 47mm, Material Thickness 1.5mm, Mounting Holes 4×Φ5mm (refer to engineering drawing)
• Compliance: ISO 9001, SGS, REACH, SVHC (available upon request - contact us for details)
• Note: Data for reference only. Manufacturer Since 1996. OEM/ODM Services Available. 2D/3D CAD on request.

Why Trust NRH

NRH Box Hardware has been designing and manufacturing industrial latches, hinges, and handles since 1996. The R5101-105K is produced under ISO 9001 certified quality control with full batch traceability. Its padlock‑ready design is tested for thousands of cycles to ensure reliable security in industrial, telecom, and outdoor applications. For a cost‑effective, high‑strength, lockable toggle latch with a bright nickel finish, NRH delivers proven quality.