Ultra Inserts

Available with or without head and suitable for ultrasonic or heated press-in installation.


Widely used in the manufacture of moulded plastic components.


Opposing herringbone knurl gives excellent resistance to torsion and pull out.


Imperial thread sizes and studded versions also available.


All Dimensions

Thread Size Length (L) ØH ØD T Pilot Hole
M2 4.0 4.8 3.6 0.6 3.2
M2.5 5.8 5.6 4.6 0.6 4.0
M3 5.8 5.6 4.6 0.6 4.0
M3.5 7.2 6.4 5.4 0.8 4.8
M4 8.2 7.2 6.3 0.8 5.6
M5 9.5 8.0 7.0 1.0 6.4
M6 12.7 9.5 8.6 1.3 8.0
M8 12.7 11.0 10.2 1.3 9.6
M10 12.7 14.0 12.3 1.3 11.7

All dimensions in mm.

Pilot hole dimensions are for reference purposes only.