Clasp fastener Leitz 37010025 Cardboard Metal Red 35mm 158mm

The Leitz 37010025 clasp fastener combines a cardboard backing with metal fastening elements in a red finish. Measuring 35 mm wide and 158 mm high, this fastener is designed to secure punched documents, reports and loose papers inside folders or lever arch files. Its mixed-material construction offers a balance between lightweight support from the cardboard and durable clamping from the metal components.

Advantages

The red cardboard and metal clasp provides visible document identification and straightforward handling. Metal clamping parts resist deformation under repeated use while the cardboard base keeps the assembly lightweight. The 35 mm width allows accommodation of a moderate stack of punched sheets, and the 158 mm height fits standard folder and lever-arch layouts.

Suitable for

• Office filing of punched documents and reports
• School and university assignment organization
• Home paperwork and personal records
• Archival storage in folders and ring binders with compatible layouts

Key specifications

• Material: cardboard base with metal fastening elements
• Colour: red
• Clasp width: 35 mm
• Overall height: 158 mm
• Suitable for punched-sheet clamping

How to use

Insert the punched edge of your documents under the metal clamping arms aligned with the cardboard backing. Fold or close the metal fastener according to the folder or file design to secure the papers in place. Ensure all sheets are neatly aligned before clamping to avoid creasing, and confirm the metal parts are fully engaged so the stack remains fixed during handling or storage.

Usage recommendations

For best results, use with standard punched A4 sheets and compatible lever-arch or folder formats. Avoid overfilling beyond the 35 mm clamping capacity to prevent reduced holding strength and potential bending of the metal elements.