Heli-Coil R1084-8 Free-Running Helical Insert, M8 x 1.25, 12 mm, Pack of 12

Heli-Coil R1084-8 Free-Running Helical Insert, M8 x 1.25, 12 mm, Pack of 12

• Heli-Coil R1084-8 is a free-running helical insert for repairing or reinforcing M8 x 1.25 metric coarse threads in metal. This tanged insert is made from stainless steel, uses a 12 mm or 1.5D length, and is supplied as a 12-piece R-Pack for replacement and thread repair work.
• Features:
  • M8 x 1.25 metric coarse thread size is designed to restore or reinforce matching internal threads in metal applications.
  • Free-running insert design provides a smooth internal thread for standard fastener installation without locking torque.
  • 12 mm overall length, also identified as 1.5D, supports the thread engagement length specified for this insert size.
  • Tanged insert design is intended for installation with the proper threaded insert tooling and tang removal process.
  • Designed for use in metal thread repair and thread reinforcement where a compatible M8 x 1.25 STI tapped hole has been prepared.
• Specifications:
  • Manufacturer: Heli-Coil
  • Part Number: R1084-8
  • MPN: R1084-8
  • UPC: 025964100085
  • Product Type: Free-running helical insert
  • Thread Size: M8 x 1.25
  • Thread Type: Metric coarse
  • Thread Direction: Right hand
  • Insert Length: 12 mm
  • Length Designation: 1.5D
  • Material: Stainless steel
  • Material Grade: 18-8 or 304 stainless steel
  • Finish: Plain
  • Tang Style: Tanged
  • Compatible Tap Size: M8 x 1.25
  • Compatible Material: Metal
  • Quantity: 12 identical inserts
  • System Compatibility or Application: Designed for repairing or reinforcing compatible M8 x 1.25 threaded holes in metal after preparation with the proper STI tap and installation tooling.
• The Free-Running Helical Insert can also be referred to as M8 x 1.25 thread insert, stainless steel helical insert, tanged thread repair insert, metric coarse thread insert, and Heli-Coil repair insert.

Heli-Coil manufactures threaded inserts and thread repair systems for automotive, industrial, and maintenance applications. The brand is widely used for restoring damaged threads and strengthening tapped holes in metal components.

Q: Is Heli-Coil R1084-8 a locking insert?
A: No. Verified sources identify it as a free-running insert, which provides a standard internal thread without locking torque.

Q: What thread size does Heli-Coil R1084-8 repair?
A: It is designed for M8 x 1.25 metric coarse threads.

Q: Does this SKU include a tap or installation tool?
A: No. Verified sources identify this R-Pack as a 12-piece pack of identical inserts only.