R5103-75 Heavy Duty Toggle Latch with Padlock Hole, Nickel Plated Panel Fastener

NRH R5103-75 Heavy Duty Toggle Latch - Padlock Hole, Nickel Plated, 25kg Load, Lockable Security

The NRH R5103-75 is a robust, heavy‑duty toggle latch designed for applications requiring superior clamping force and the option for padlock security. Constructed from SPCC cold‑rolled steel with a bright nickel plating finish, it offers high strength, good corrosion resistance, and a professional silver appearance. The over‑center toggle mechanism delivers a reliable 245N (25kg) tensile load for tight, vibration‑resistant closure. A key security feature is the integrated padlock hole, allowing a standard padlock to be added to physically prevent the latch from opening. Weighing only 31g and with a compact overall height of approximately 76mm and mounting plate width of 31mm, it is ideal for heavy industrial cabinets, machinery guards, and secure storage cases. 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), 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 height approx. 76mm, top plate width 31mm, mounting bracket height 19.5mm, latch body width 34.5mm, with 4×Φ4.2mm mounting holes. Padlock hole as shown in drawing - fits standard padlocks. Refer to the engineering drawing for complete dimensional data.

Why Nickel Plated Steel + Padlock Hole?

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 integrated padlock hole is a critical security upgrade:

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

Primary Applications - Heavy Duty with Optional Locking

• Heavy‑duty industrial cabinets & enclosures - electrical switchgear, control panels, server racks - lock to prevent unauthorized access
• Machinery guards & safety covers - secure heavy protective guards with option for safety padlock (LOTO) during maintenance
• Secure storage & transport cases - heavy tool chests, generator cases, ammunition boxes, sensitive equipment transit containers - lockable security
• Outdoor utility & telecom boxes - robust field cabinets for communication or power distribution - padlock provides theft deterrence

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 25kg (245N) clamping force pulls the two surfaces tightly together for a rattle‑free seal. To add security, insert a standard padlock through the padlock hole on the hook. The shackle physically prevents the hook from being lifted, making unauthorized opening impossible without cutting the lock. To release, unlock the padlock then lift the lever.

Key Advantages

• Padlock‑ready security - integrated hole accepts standard padlocks for theft deterrence and LOTO
• 25kg (245N) holding force - reliable for medium‑heavy doors, lids, and panels
• Nickel‑plated steel construction - strong, corrosion‑resistant, bright finish
• Compact, robust dimensions - 76mm height, 31mm width, 31g weight - fits tight spaces
• Tool‑free operation - one‑handed open/close for daily access; padlock for security
• Precision mounting - 4×Φ4.2mm holes for secure installation
• OEM/ODM ready - custom hole sizes, lever shapes, logo engraving available

Technical Specifications

• Brand: NRH Box Hardware
• Model Number: R5103-75 (Lockable version)
• Product Name: Toggle Latch (with Padlock Hole)
• Material: SPCC Cold‑Rolled Steel + Nickel Plating
• Finish: Nickel Plating
• Security Feature: Integrated Padlock Hole
• Net Weight: 31g
• Tensile Load: 245N (25kg)
• Key Dimensions: Overall Height 76mm, Top Plate Width 31mm, Mounting Bracket Height 19.5mm, Latch Body Width 34.5mm, Mounting Holes 4×Φ4.2mm (refer to engineering drawing)
• Compliance: ISO 9001, SGS, REACH, RoHS (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 R5103-75 lockable toggle latch 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.