Product Description
Overview
The SS-S3250 is a 3.25 tons, 5/8" nominal RIGPRO screw pin anchor shackle for fast rigging connections between slings, hoists, truss hardware, and load points. It uses a forged carbon steel body with a Dacromet-finished alloy pin, giving stage and event crews a marked, traceable connector that can be opened and redeployed quickly between builds.
Why It Matters
This smaller 5/8" screw pin shackle is easy to keep in a working rigging kit, but it still needs the same disciplined selection as larger hardware. It is especially important here because the same nominal size also exists as a higher-capacity alloy model, so crew should read the marking instead of trusting visual size.
Key Features
- 3.25 tons working load limit and 5/8" nominal size are permanently marked on the body, so the shackle can be checked before it is placed into the load path.
- Forged Carbon Steel construction with 6 times minimum ultimate-load ratio places this model in the correct strength family for its rated capacity.
- Screw pin design allows quick hand installation and removal, useful when the connection changes often during stage, rental, or production work.
- 5/8" size overlaps with the SS-S5000, making the catalog number and working load limit stamping important checks before use.
- DNV and ABS type approval, US Federal Specification RR-C-271D Type 4 A compliance, magnetic-particle crack detection, and 20,000-cycle fatigue rating support professional rigging inventory control.
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 fit for temporary stage rigging, truss pickups, motor points, wire rope sling connections, round sling connections, and rental-house kits where shackles are repeatedly inspected, installed, removed, and returned to inventory.
Compatibility
Use with rated slings, hoists, and anchorage hardware selected for the same or higher capacity; reduce working load limit for off-axis loading according to the catalog values, including 30 % reduction at 45° and 50 % reduction at 90° from centreline.
Frequently Asked Questions
Why use a screw pin shackle instead of the bolt-and-nut version
Screw pin shackles are faster to open and redeploy by hand, so they suit temporary rigs and rental workflows where the connection is checked and changed often.
Can I side load this if the bridle angle is not straight
Side loading reduces capacity. Follow the catalog reduction table, including 30 % reduction at 45° and 50 % reduction at 90° from centreline.
Why are there two 5/8" screw pin shackles
The SS-S3250 is the 3.25-ton carbon-steel version, while the SS-S5000 is the 5-ton alloy-steel version. They are similar in size but not interchangeable by capacity.