51.5-81.5mm Closing Clamp With Spring, 500N Thrust/725N Hold, Zinc-Plated - Kukamet

Compact, durable clamping with a 500 N maximum clamping force, zinc-plated corrosion protection and an adjustable arm of 51.5–81.5 mm ensures secure fixture retention and long service life; order directly via Metav Werkzeuge or ask the consultants for tailored advice.

Kukamet 311 Closure Clamp — horizontal-base, spring-loaded toggle clamp with adjustable arm

The 311 closure clamp is a horizontal-foot toggle clamp designed for secure holding in jigs and fixtures across metalworking and workshop applications.

• Zinc-plated corrosion protection
• Spring-loaded action for secure closing
• Horizontal-foot mounting for stable installation
• Adjustable arm range 51.5–81.5 mm

Consistent, measurable clamping performance for production workflows

The lever mechanism provides a reliable clamping action with a maximum clamping force of 500 N and a holding force of 725 N, values that support repeatable fixing in small-series production and shop-floor fixtures. The distinction between clamping and holding force is significant: clamping force refers to the instant pressure applied during engagement, while holding force denotes the clamp’s ability to keep a workpiece secured under load. These numerical specifications enable planners to match the clamp to application requirements and calculate safety margins for machining or assembly operations.

Built to resist workshop conditions and reduce downtime

Constructed with a zinc-plated finish, the clamp offers enhanced resistance to corrosion in mixed workshop environments, extending service intervals and protecting contact surfaces. The spring-loaded latch ensures positive engagement and reduces the risk of accidental release during handling. The design with a horizontal foot facilitates low-profile mounting on fixtures or tooling plates, providing a compact mounting footprint while maintaining mechanical stability. Durability-focused features translate directly into lower maintenance effort and fewer production interruptions.

Fast, adjustable clamping that integrates into fixtures

The adjustable arm span (51.5–81.5 mm) and a threaded length of 110 mm allow precise setting of the clamp’s reach and engagement point, simplifying integration into existing jigs. The toggle principle locks the lever in position once closed, converting operator motion into a secured hold without constant manual pressure — a practical advantage for repetitive processes where cycle time and operator ergonomics matter. The clamp’s balanced mass (0.98 kg) and compact form make positioning and replacement straightforward within modular fixturing systems.

Suitable use cases and benefits for workshop and light industrial settings

This clamp is suited to fixture work in metal fabrication, light assembly, and woodworking jigs where reliable repeatability is required. The combination of adjustable reach, spring-loaded retention and corrosion resistance makes it particularly useful for fixtures subject to frequent changeover or variable stock sizes. By specifying a clamp with clear force ratings and mounting form, engineering teams achieve predictable behaviour in production setups and reduce rework caused by inconsistent clamping.

Contact Metav Werkzeuge for a fixture consultation and specify the Kukamet 311 closure clamp (SKU 311-5-Y) for reliable, adjustable clamping solutions — Metav Werkzeuge’s advisors can confirm fitment and technical suitability for each project.

Technical data

• SKU: 311-5-Y
• GTIN: 8682843520956
• Eclass: 21041718
• Brand: Kukamet
• Material: zinc-plated
• Mounting: horizontal foot
• Thread length: 110 mm
• Arm range: 51.5–81.5 mm
• Max clamping force: 500 N
• Max holding force: 725 N
• Weight: 0.98 kg
• Spring-loaded: yes
• With hook: yes

Facts

• Article type: toggle/closure clamp
• Category: Spanner
• SKU identifier: 311-5-Y
• ETIM: EC011973

Special features

• Corrosion protection via zinc plating
• Adjustable arm for variable workpiece sizes
• Spring-assisted closing mechanism
• Horizontal-foot attachment for stable mounting
• Threaded connection for secure adjustment

FAQ

What is the adjustable arm range of the clamp?
The clamp offers an adjustable arm range of 51.5–81.5 mm, enabling adaptation to varying workpiece dimensions.

Which materials is this clamp suitable for in fixtures?
The Kukamet 311 closure clamp is suitable for general fixture use across metallic and non-metallic assemblies where a mechanical toggle clamp is appropriate.

How much clamping and holding force does the clamp provide?
The device provides a maximum clamping force of 500 N and a holding force of 725 N, measured under standard test conditions.

How is the Kukamet 311 mounted to a fixture plate?
Mounting is via a horizontal foot, allowing low-profile attachment to plates or jigs with the threaded connection set to the required engagement.

Is the clamp protected against corrosion?
Yes, the clamp is zinc-plated, offering improved resistance to corrosion in workshop environments.

Manufacturer: Kukamet Fevzi Çakmak Mah.10644 Sk. No:61-63 42050 Karatay / KONYA TÜRKİYE / Responsible: Metav Werkzeuge GmbH; Parkring 45; 46446 Emmerich; Germany; +49 2822 7131930; info@metav-werkzeuge.com