Product Details Forged Steel Tie Down Lock Shipping Container Dovetail Twist Lock Product Description A dovetail twist lock is a mechanical fastening system de
A dovetail twist lock is a mechanical fastening system designed to securely connect trailers, shipping containers, or modular equipment by combining a dovetail groove and a rotating locking mechanism. This hybrid design ensures precise alignment and robust load transfer, making it ideal for heavy-duty applications where stability and rapid coupling/uncoupling are critical.
Here are the typical specifications for a standard forged steel dovetail twist lock:
| Parameter | Specification / Description |
|---|---|
| Product Name | Dovetail Twist Lock / Container Tie Down Lock |
| Material | High-Strength Forged Steel |
| Finish / Coating | Typically Hot-Dip Galvanized for superior corrosion resistance. Painted finishes are also available. |
| Working Load Limit (WLL) | 25 Tons / 50,000 lbs (This is a standard rating, but always verify for the specific product). |
| Minimum Breaking Load (MBL) | Typically 4-6 times the WLL (e.g., ~100-150 Tons). |
| Head Dimensions | Designed to fit standard dovetail pockets (approx. 74mm x 74mm). |
| Operation | Manual. Features an operating lever for easy 90-degree engagement and disengagement. |
| Standards & Certifications | Complies with ISO 3874 (Series 1 freight containers), ASTM A-489, and other relevant international standards for container securing devices. May have ABS (American Bureau of Shipping) or other classification society approval. |
| Application | Used for securing shipping containers to trailers, railcars, and container stacks on ships. Specifically designed for use with dovetail pockets. |
| Key Features | • Superior strength and durability due to forging process. • Easy to operate and inspect. • Galvanized coating for long service life in harsh environments. • Prevents vertical and horizontal container movement. |
Important Safety Note: Always inspect twist locks for wear, damage, or deformation before use. Never use a damaged lock. The Working Load Limit (WLL) must never be exceeded.
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