From our SK552 Series:

SK 552-040

Pull-style expander seals use an integrated mandrel to insert the expander plug into a drilled hole. This type of KOENIG EXPANDER® plug does not require the hole to be counter-bored, and is often used for angled channels or installations with difficult orientations. They are ideal for installations with space or weight constraints.

Specifications for: SK 552-040

d1 d2 d3 +0.12 / -0 l1 l2 l3 max. L4 Max. (BO) Packaging Unit Weight in gram/pcs.
4 2.5 4 4.5 69 8.2 6.5 100 / 1000 2.87
d1 4
d2 2.5
d3 +0.12 / -0 4
l1 4.5
l2 69
l3 max. 8.2
L4 Max. (BO) 6.5
Packaging Unit 100 / 1000
Weight in gram/pcs. 2.87

* SFC KOENIG’s North American Engineering Department utilizes 2024-T4/T6 as a test base material.