Description
Overview:
The Volkel 12 mm Thread Insert (MPN 07321) is a wire thread repair insert made from corrosion‐resistant stainless steel. It restores or reinforces internal M12 threads in metal components, providing a hard‐wearing, accurate thread that stands up to wear, heat, and vibration. Use it to recover stripped or worn threads or to strengthen new threads in softer alloys such as aluminium. Suitable for workshop and site maintenance across construction equipment, agricultural and garden machinery, vehicles, and general engineering. Installed as part of a standard helicoil process using an STI tap and fitting tool, the insert locks into the parent material and offers a reliable mating surface for standard M12 bolts. It is a practical, cost‐effective way to extend the life of housings, casings, fixtures, and tools without replacing the whole part.
Key Features:
- Durable stainless steel construction for corrosion and heat resistance
- Restores original M12 thread size for use with standard metric bolts
- Reinforces threads in softer materials (e.g. aluminium) to reduce pull‐out
- Creates a smooth, free‐running thread for consistent torque and clamping
- Suitable for on‐site or workshop repairs across many industries
- Works with standard wire thread insert tools and STI taps for M12 repairs
- Helps prevent future thread wear in high‐cycle assembly locations
- Cost‐effective alternative to replacing expensive castings or housings
- Reliable under vibration and repeated tightening, improving service life
Typical Applications:
Repair and reinforcement of M12 threads in engine and gearbox covers, pump bodies, valve housings, jigs and fixtures, and mounting points on construction plant, agricultural kit, and garden machinery. Useful wherever an M12 fastener is frequently removed and refitted, or where softer metals need stronger, longer‐lasting threads to maintain correct bolt torque and clamping.
Also known as:
Wire thread insert, screw thread insert (STI), thread repair insert, coil thread insert, recoil‐type insert, spring thread insert, wire coil thread repair. These terms refer to the same style of stainless steel wire insert used to restore or strengthen internal threads for standard metric fasteners.
Product Specifications
| L&S Part No. | 902 1516 |
|---|---|
| Manufacturer | Volkel |
| OEM No. | 07321 |
| Unit of Sale | 1 |
| Size | 12mm |
| Key Features | - Stainless steel for corrosion and heat resistance - Restores M12 thread size for standard metric bolts - Reinforces threads in softer materials like aluminium - Compatible with standard wire thread insert tools - Suitable for workshop and on-site repairs across industries |
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