Keenserts Thread Repair Insert, M8 x 1.25, Drill Size 11.5mm

The Keenserts KNHM8X1.25 is a heavy‑duty metric-thread repair insert engineered to restore or reinforce M8 × 1.25 internal threads using a standard 11.5 mm drill. Designed for use in aluminium, light alloys, steel and cast materials, this stainless‑steel insert provides a robust solution where original threads have been stripped, weakened or are subject to repeated reassembly. Typical applications include aerospace, industrial machinery, marine and instrumentation systems.

Advanced Features and Benefits of Choosing the Keenserts Thread Repair Insert

• M8 × 1.25 internal thread restores compatibility with standard fasteners.
• 11.5 mm drill size allows the use of common tooling for installation.
• Heavy‑duty stainless steel construction provides corrosion resistance and high-cycle life performance.
• Key‑locking design prevents rotation and pull‑out after installation.
• Suitable for repair or new build reinforcement in weaker base metals or soft alloys.
• Compatible with standard tapped-hole preparation, minimising the need for special tooling.

Engineered for Reliable Thread Performance

This versatile insert is manufactured to strict tolerances, with stainless steel selected for its mechanical strength and fatigue resistance in demanding environments. Installation involves drilling to 11.5 mm, tapping to the recommended external thread size, and inserting the tool until its keys engage. This creates a permanent, high‑strength thread fix that resists loosening under vibration and frequent assembly cycles.

Applicable Areas of the Insert

• Repairing stripped M8 × 1.25 threads in aluminium housings within automation equipment.
• Reinforcing bulkhead mounting holes in marine or offshore enclosures subject to corrosion.
• Providing long‑life service threads in cast‑iron machine bases.
• Upgrading existing design joints in metallurgical or instrumentation assemblies for improved durability.
• Securing anchors in aerospace components.

For more information please check the datasheets.