Connect, lock, release

Breech twistlock & base

This bottom-entry breech twistlock secures ISO containers from below when there's no working space beside them — vibration and storm resistant — and comes with its matching round breech base.

Description

For sites where an adjacent container already fills the working space beside the unit being secured, this twistlock locks from below instead of from the side. It's available in left- or right-locking configuration and is always paired with its matching breech base — a round foundation plate, welded or cast into the deck, slab or steel structure, that the twistlock engages from underneath. The base carries its own SKU and is ordered alongside the twistlock, one per securing point.

Features

• Bottom-entry design suits sites with no clearance beside the container
• Available in left- or right-locking configuration
• Breech base is the mating half, welded or cast into the deck or foundation
• A D-ring derivative is also available with an integral lashing point

Where it is used

Space-constrained container securing where containers already sit directly adjacent; marine and shore stacking applications.

Specifications

Material	Heat treatable steel — same specification as the dovetail twistlock
Load Rating (SWL)	SWL 250 kN tension / 210 kN shear / 1000 kN compression — MBL 500 kN / 420 kN / 2000 kN
Weight	Twistlock 5.5 kg · breech base 2.8 kg
Breech base (AH-A1)	Round foundation plate — SWL 250 kN tension / 210 kN shear; own SKU
Finish / Coating	Hot Dip Galvanised

Documents & extras

• Datasheet and technical drawing — request with your quote or email us.
• 3D model (STEP) available on request.