R5104-59 Spring Toggle Latch, Nickel Plated, Panel Fastener

NRH R5104-59 Heavy Duty Toggle Latch - Nickel Plated, 25kg Load, Spring Assisted, Industrial Strength

The NRH R5104-59 is a heavy‑duty toggle latch engineered for applications requiring a stronger, secure closure. Constructed from SPCC cold‑rolled steel with a bright nickel plating finish, it offers a cost‑effective yet robust solution with good corrosion resistance. The integrated spring mechanism provides smooth, consistent operation during manual engagement and disengagement, enhancing usability and delivering crisp tactile feedback. The over‑center toggle design delivers a substantial 245N (25kg) tensile load, making it suitable for heavier panels, industrial toolboxes, machine guards, and equipment cases. Weighing only 19g and with compact dimensions (length 44mm, width 27mm, mounting holes 4×Φ4.2mm), it fits tight spaces without sacrificing holding power. 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, RoHS, 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: length 44mm, width 27mm, with 4×Φ4.2mm mounting holes. Refer to the engineering drawing for complete dimensional data (including overall height and material thickness).

Why Nickel Plated Steel + Spring Assist for Heavy Duty?

SPCC cold‑rolled steel provides excellent strength and formability at a cost‑effective price point. The nickel plating adds a bright, corrosion‑resistant surface that outperforms standard zinc plating in many industrial environments. The internal spring assist offers several operational benefits:

• Smoother engagement - the spring helps the latch move cleanly into the locked position without binding
• Controlled release - prevents abrupt or jerky opening, reducing wear
• Consistent tactile feedback - users feel a crisp “snap” when fully engaged
• Reduced operator fatigue - spring assist lowers the force required for locking/unlocking

Primary Applications - Where Higher Clamping Force Matters

• Industrial toolboxes & chests - heavy‑duty tool storage, rolling cabinets
• Machine guarding & safety doors - access panels on industrial equipment where positive lock is critical
• Heavier equipment cases & transit containers - locking lids on cases containing heavy instruments or components
• Agricultural & construction equipment panels - fastening access hatches and covers in rugged environments

How It Works - Spring‑Assisted Over‑Center Toggle

The latch operates on a classic over‑center toggle mechanism enhanced by an internal spring. When the lever is pressed down, the spring helps draw the hook past its mechanical center point, creating a self‑locking hold that resists vibration and accidental opening. The 25kg (245N) clamping force pulls the two surfaces tightly together for a rattle‑free seal. To release, lift the lever; the spring again provides smooth, controlled motion, preventing sudden snap‑back. This design ensures positive engagement every time with minimal user effort, even after thousands of cycles. The nickel‑plated steel construction ensures long‑term reliability in demanding environments.

Key Advantages

• 25kg (245N) holding force - higher than standard latches, for heavier panels and demanding applications
• Spring‑assisted operation - smooth, low‑effort open/close with crisp tactile feedback
• Nickel‑plated steel construction - strong, corrosion‑resistant, bright finish
• Compact, lightweight design - 44×27mm footprint, 19g weight - fits tight spaces
• Precision mounting - 4×Φ4.2mm holes for secure installation
• Tool‑free, one‑handed operation - quick access, no special tools needed
• OEM/ODM ready - custom hole sizes, lever shapes, logo engraving available

Technical Specifications

• Brand: NRH Box Hardware
• Model Number: R5104-59
• Product Name: Toggle Latch (Spring Assisted)
• Material: SPCC Cold‑Rolled Steel + Nickel Plating
• Finish: Nickel Plating
• Net Weight: 19g
• Tensile Load: 245N (25kg)
• Key Dimensions: Length 44mm, Width 27mm, Mounting Holes 4×Φ4.2mm (refer to engineering drawing)
• Compliance: ISO 9001, SGS, REACH, RoHS, 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 R5104-59 is produced under ISO 9001 certified quality control with full batch traceability. Its 25kg load capacity and spring‑assisted mechanism are tested for thousands of cycles to ensure reliable performance in heavy industrial, tool storage, and equipment applications. For a cost‑effective, high‑strength, nickel‑plated toggle latch with smooth operation, NRH delivers proven quality.