Blind rivet nut GESIPA M8 x 11 x 20.5 countersunk head KS for 4.0–6.5 mm panels, pack of 100

Blind rivet nut GESIPA M8 x 11 x 20.5 countersunk head KS is a one-sided fastening insert designed to form a permanent internal M8 thread in panels and sheet materials with thicknesses from 4.0 to 6.5 mm. Supplied as a pack of 100, each rivet nut features a countersunk head that sits flush in countersunk holes, providing a neat finish and reliable load distribution. This fastener is intended for applications where access is available from only one side and a strong threaded connection is required.

Advantages

These GESIPA blind rivet nuts offer consistent thread quality and repeatable installation results when used with compatible blind riveters or setting tools. The countersunk head ensures a low-profile installation that reduces protrusion on the visible side and improves assembly aesthetics. The pack of 100 simplifies inventory management for production runs, repair work, or maintenance tasks.

Suitable for

• Sheet metal assemblies and panels
• Enclosures and cabinets where only one-sided access is possible
• Automotive and vehicle bodywork repairs
• Furniture and fixtures requiring sturdy M8 threads
• Industrial equipment and machine guards

Key specifications

• Internal thread size: M8
• Outer diameter: 11 mm
• Overall length: 20.5 mm
• Head style: countersunk (KS) for flush mounting
• Material suitability: designed for use in metals and comparable panel materials with thickness 4.0–6.5 mm
• Quantity: pack of 100

How to use

Prepare a correctly sized countersunk hole in the panel in accordance with the specified outer diameter and head style. Insert the blind rivet nut from the accessible side into the hole until the countersunk head sits flush with the surface. Using a compatible blind riveter or setting tool, pull the mandrel to deform the rivet nut body, forming a secure bulbed section behind the panel and creating the internal M8 thread. After setting, remove the mandrel; the fixed threaded insert is then ready to accept an M8 screw or bolt.

Usage recommendations

For reliable performance, use tools recommended for blind rivet nuts of this size and follow manufacturer torque specifications when installing screws. Verify panel thickness and prepare proper countersink dimensions before installation. For high-vibration environments, consider using locking fasteners or thread-locking compounds in conjunction with the installed M8 thread.