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20mm Latch Lock with override key F688

A 20mm or 25mm Latch Lock F688 available Nickel Plated. This innovative latch lock comes complete with a master key for emergency access. Use it to operate the handle and gain entry without cutting or damaging the latch.

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Featured Technicals
Lock Description

Originally developed for school lockers, this patented latch lock combines padlock security with a safe, child-friendly design. Rounded edges and recessed lock cavity prevent injuries while allowing key operation even with the padlock fitted.

Its compact build and 1-, 2- or 3-point cam options suit not only educational settings but also public and government buildings, leisure centers and industrial environments and ensures padlock-level protection with flexible key access.

Typical applications

Ideal for:

  • Lockers
  • Utility cabinets
  • Enclosures
  • Telecom boxes
  • Service panels
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Lock Options
Product Code Key Series Combinations Body Length Head Depth Finish Max Panel Thickness Shackle Diameter Inquire
F688 2000 20 28 Nickel Plated 10 Min 5 – Max 7 Contact Sales
F689 2000 20 28 Nickel Plated 10 Min 5 – Max 7 Contact Sales
F758 2000 25 28 Nickel Plated 21 Min 5 – Max 7 Contact Sales
Standard Features
  • Padlock-operated latch system with override key F688 / F689 Series K; F758 Series 2000
  • Key-free when closed for added safety
  • Standard movements: 1, 2
  • Padlock shackle diameter: 5 – 7mm
  • Fixing options: Right hand version available as standard (left hand available on request)
  • Standard finish: Nickel (chrome or black on request)
  • Rosette: Black plastic (other colors on request)
  • Handle: Zamak with nickel or chrome finish
  • Housing fixing: nut fixing as standard; horseshoe clip on request
  • Max panel thickness: F688 / F689: 10 mm; F758: 21 mm
  • Lock movement: Key turns 90° right or left
  • Fixing hole shape: F688 – special with anti-turn lugs; F689 & F758 – Double D
  • Comprehensive range of cams available: Available with 1, 2, or 3-point cams

Additional Information

20mm Latch Lock with override key F688 technical drawing