TWISTLOCK REMOVABLE K-709-K
WEIGHT:7.9KG
FINISH:GALVANIZED
SWL:250KN
BL:500KN

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K-709-K Removable Dovetail Twistlock | User Manual

1. Product Overview

The K-709-K is a high-strength securing fastener specifically engineered for marine container decks and multi-purpose transport platforms. Manufactured using precision casting and a Normalizing heat treatment process, this product ensures superior mechanical performance and exceptional fatigue resistance.

The core advantage lies in its Removable Dovetail Design: when container transport is not required, the lock body can be quickly slid out from the dovetail foundation. This leaves the deck surface flush and unobstructed, allowing for maximum cargo flexibility.

• Model: K-709-K

• Type: Dovetail / Removable Container Twistlock

• Compatibility: Fully compatible with ISO 1161 standard container corner castings.

2. Key Features

• Premium Material: Crafted from high-grade Cast Alloy Steel with a strict normalizing process for a dense internal structure and excellent load-bearing capacity.

• Superior Corrosion Resistance: The surface is Hot Dip Galvanized (HDG), providing long-term rust protection even in harsh, high-salinity, and high-humidity marine environments.

• Deck Optimization: The dovetail foundation paired with a removable body eliminates permanent obstructions on the loading platform.

• Dual Safety: Features a precision rotary locking mechanism to ensure the load remains secure even during heavy vibrations or turbulent transit.

3. Installation & Operation Guide

3.1 Pre-Installation Inspection

• Verify that the dimensions of the Dovetail Foundation on the trailer, deck, or chassis are perfectly compatible with the K-709-K.

• Clear any debris, sand, or surface rust from the foundation and dovetail slots to ensure smooth sliding.

3.2 Operating Steps

1. Insertion: Align the K-709-K lock body with the Dovetail Slot on the platform and slide it in. Ensure the unit is fully seated and flush with the mounting surface.

2. Locking: Once the container corner casting is in position, turn the operating handle 90 degrees to the “Locked” position. The locking head should now be crosswise, securing the corner casting aperture.

3. Unlocking & Removal:

   • After transit, rotate the handle counter-clockwise back to the initial position.

   • After the container is lifted away, the entire twistlock can be slid out or lifted from the dovetail foundation.

4. Safety Warnings

Strict adherence to the following regulations is mandatory to prevent accidents:

1. No Overloading: The actual load must never exceed the Rated Safe Working Load (SWL) of the twistlock.

2. Complete Locking: Before the vehicle or vessel moves, confirm that all four corner twistlocks are rotated to the full 90-degree locked position.

3. Correct Pairing: Use only with containers meeting ISO 1161 standards.

5. Maintenance & Care

Regular maintenance significantly extends the service life of the dovetail lock:

• Regular Lubrication: Apply industrial-grade grease to the internal rotating shaft and friction points every quarter to ensure smooth operation.

• Visual Inspection: Conduct a comprehensive check every 6 months for cracks, plastic deformation, or coating peel-off.

• Slot Cleaning: Every time the lock body is removed, clean the salt deposits, grit, or oil from the dovetail foundation to prevent mechanical jamming or chemical corrosion.

6. Technical Specifications