Product Description
Overview
The SS-S12500 is a 12.5 tons, 1" nominal RIGPRO anchor shackle for connecting slings, hoists, hardware, and loads in professional rigging systems. This screw pin version uses a forged alloy steel body with a Dacromet-finished alloy pin, giving crews a marked, traceable connector for repeated entertainment and industrial rigging work.
Why It Matters
Screw-pin shackles earn their place in show work because they are fast to install and remove by hand. For crews rebuilding rigs between productions, that speed matters, provided the shackle is inspected, tightened, and used within the approved loading plan.
Key Features
- 12.5 tons working load limit with 1" nominal size is permanently marked on the body, helping crew check the connector before it enters the rig.
- Forged Alloy Steel construction with 5 times minimum ultimate-load ratio gives the correct strength family for this size and capacity.
- Screw Pin pin style supports quick installation and removal when the connection is opened often.
- DNV and ABS type approval plus US Federal Specification RR-C-271D Type 4 A compliance support use in demanding professional rigging inventories.
- 100 % magnetic-particle crack detection and 20,000-cycle fatigue rating at 1.5 times working load limit give the shackle a defined inspection and performance baseline.
Additional Technical Notes
- WLL Reduction: 0 % at 5°, 30 % at 45°, 50 % at 90° from centreline
- Quality Control: 100 % magnetic-particle crack detection
- Fatigue Rating: 20,000 cycles at 1.5 times WLL
- Marking: Size, WLL, and batch code permanently marked for certificate traceability
Applications
A practical connector for stage, event, and rental-house rigging where slings, hoists, and hardware are connected and disconnected frequently between builds.
Compatibility
Use with round slings, wire rope slings, chain hoists, and anchorage hardware rated for the same or higher capacity; apply the catalog WLL reduction when side loading at 45° or 90°.
Frequently Asked Questions
Why choose the screw pin version when a bolt type also exists
Choose the screw pin style when the shackle is opened and redeployed often, such as rental and event work, and the pin can be checked during normal setup inspection.
Is side loading allowed if the sling does not pull straight
Side loading reduces capacity. Use the catalog reduction values, including 30 % reduction at 45° and 50 % reduction at 90° from the centreline.
Why does this size look close to another shackle in the same family
This 1" screw-pin model shares the size class with lower-capacity screw-pin shackles, so check SS-S12500 and the 12.5-ton WLL marking before use.