22/02/2026

Fixing tie for hole (round), inside serrated, ⌀4.0-20.0mm, black, 500pcs.
Art.-No. 156-01389 | T18RFT5-PA66HS/PA66HIRHS-BK

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  • Friction tab inside the fir tree allows the tie to sit in mount without falling out prior to installation.
  • Fir tree provides low insertion effort yet demonstrates high extraction resistance.
  • Disc feature prevents rattling in high-vibration applications and protects against debris ingress.
Application Primarily designed for fixing cable harnesses in the automotive industry their simplicity, and ease of use, has seen these parts used in everything from aircraft, to switch-gear, to washing machines.
Color Black (BK)
Description HellermannTyton’s fir tree mounts provide a secure grip in a mounting hole. The mount can slide along the cable tie to adjust orientation as needed. Fir tree mounts are designed to provide a low insertion force and high extraction force. This mount is sold as an assembly with the cable tie.
Min. Tensile Strength (metric) 80N
PART DESCRIPTION T18RFT5-PA66HS/PA66HIRHS-BK
Packaging Type bag
Part No. 156-01389
Product family 2-Piece Tie Assemblies
Product family Fixing ties for holes
Type T18RFT5
Cable Tie Closure plastic pawl
Disc Diameter (metric) 16.0mm
Fixation Method Fir Tree
Height (metric) 1.0mm
Height 2 (metric) 6.9mm
Identification Plate Position none
Length (metric) 100mm
Length 2 (metric) 11.6mm
Max. Bundle Diameter (metric) 20.0mm
Max. Panel Thickness (metric) 3.00mm
Min. Bundle Diameter (metric) 4.0mm
Min. Panel Thickness (metric) 0.70mm
Mounting Hole Diameter (metric) 4.5 - 5.0 mm
Releasable Closure No
Width (metric) 2.45mm
Width 2 (metric) 9.0mm
Material PA66HS, PA66HIRHS
Material Polyamide 6.6 heat stabilized (PA66HS), Polyamide 6.6, high impact modified, heat stabilized (PA66HIRHS)
ROHS compliant Yes
Pkg. Qty. 500Pieces
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