TIME-SERT® M12 × 1.25mm Thread Repair Kit

Professional solid insert system designed for permanent repair of M12 × 1.25mm metric fine threads. Engineered to restore full thread strength in metal components with precision and durability.

For other sizes and complete repair systems, view our TIME-SERT® Metric Kits .

Key Features

Solid steel insert design
Provides a strong, permanent repair that is more durable and load-capable than wire-style inserts.
Positive mechanical locking
Insert is locked in place during installation, preventing loosening under vibration or load.
Permanent repair solution
Designed for long-term use in aluminium, cast iron, magnesium and steel components.
Complete installation system
Includes all tooling required to drill, counterbore, tap and install inserts accurately.
Product summary
TIME-SERT® solid insert kit for restoring damaged or stripped M12 × 1.25mm metric fine threads with precision and long-term reliability.
Thread size: M12 × 1.25mm
Thread type: Metric fine
Insert Length: 15mm
Insert material: Solid steel
Insert quantity: 5 inserts
Repair type: Permanent
VAT invoice provided

Common Applications (General Guidance)

  • Metric fine-thread repairs where M12 × 1.25mm threads are specified
  • Engine, transmission and mechanical housings
  • Structural and load-bearing threaded holes
  • Automotive, motorcycle, industrial and engineering components

Applications listed are for general guidance only. Always verify thread size, pitch and suitability before installation.

Kit Contents

  • M12 × 1.25mm TIME-SERT® tap
  • Correct-size drill bit
  • Counterbore / seat cutter
  • Installation driver
  • 5 × M12 × 1.25 x 15mm solid steel TIME-SERT® inserts
  • VAT Invoice

Important Notes

  • Ensure the original thread size and pitch is M12 × 1.25mm before purchase
  • Professional installation recommended for critical applications
  • Designed for permanent repair — not a temporary solution
Genuine TIME-SERT® • Trusted by professional workshops and engineers worldwide
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Of course, we want you to buy as many goods as possible from our shop. If you want to buy more than one of a particular product or multiple items, we will always try to combine postage and packaging costs.

Due to charges levied by our delivery agents, some Highland & Island locations incur a surcharge when being delivered by courier. In these instances, we will attempt to use an alternative delivery service, but this is not always possible.

If your postcode is listed below, please contact us prior to purchasing goods and we can confirm the cost of shipping:

  • AB, BT, DD, DG, EH, FK, G, GY, HS, IM, IV, KA, KW, KY, ML, PA, PH, TD, ZE, all Islands.

Ace Consumables ship most goods within 24hrs of cleared payment on a next-day delivery service* (Friday pm–Sunday orders ship Monday).

Orders received before 11:30am are usually shipped the same day. Services used include:

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  • Royal Mail Tracked 48
  • Courier Delivery (48hr*)
  • Courier Delivery (24hr*)

Most customers receive their orders within 2–4 days. If goods have not been delivered after 4 days, please contact us.

*The following postcodes may take an additional day or two:

  • AB, BT, IV, KW, PA, PH, all Islands.

Disclaimer: Ace Consumables reserve the right to change the terms at any time.

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