STM5810K MEGA Swivel 10K Steel Anchor
The STM5810K MEGA Swivel is a 10,000 lbf steel anchorage connector with a revolutionary swivel ring design - the D-ring rotates a full 360 degrees and flips 180 degrees side to side, so the connecting device follows the worker instead of side-loading the anchor. Heavy gauge heat treated alloy steel, a reinforced bridge, and locking caps give the anchor its strength, and the patent pending key lock design keeps the D-ring seated and locked in its swivel housing, preventing the steel from spreading under heavy loads.
The anchor bolts to steel structures with a variety of installation kits, and the bolt is easily replaced (part STM5810KRB) when moving to the next work area - one reusable anchor for vertical, horizontal, and overhead applications. Rated 310 lbs user capacity and 2,000 lbs working load, it covers fall protection, rescue, lifting, hoisting, and tie-back duty. Conforms to ANSI Z359.1-2007 and Z359.7-2011 and aligns with OSHA 29 CFR 1926.502 and 1910.140.
Who Needs This Product
This product is a reusable steel anchorage connector - the anchor point of a personal fall arrest system on steel structures. Ironworkers, riggers, and maintenance crews bolt it to structural steel wherever a swiveling tie-off is needed for fall protection, rescue, lifting, hoisting, or tie-back. Each worker still needs a full body harness and a compatible connecting device attached to the D-ring.
Features
Full swivel D-ring
Rotates 360 degrees and pivots 180 degrees side to side, so the lifeline tracks the worker without twisting or side-loading.
Key lock swivel housing
The patent pending key lock keeps the D-ring seated and locked in its housing, preventing the steel from spreading under heavy loads.
Heat treated alloy steel
Heavy gauge zinc plated steel with a reinforced bridge, D-ring, and locking caps delivers 10,000 lbf tensile strength.
Reusable with replaceable bolt
Swap the bolt (replacement part STM5810KRB) and move the anchor to the next work area.
Any orientation
Rated for vertical, horizontal, and overhead installations on steel structures.
Multi-duty rating
Fall protection, rescue, lifting, hoisting, and tie-back from one anchor with a 2,000 lb working load.
Technical Specifications
| SKU | STM5810K |
|---|---|
| Type | Swivel steel anchorage connector, reusable |
| Material | Zinc plated, heat treated alloy steel |
| Anchor weight | 1.4 lbs (630 g) |
| Tensile strength | 10,000 lbf / 44 kN |
| Max user weight | 310 lbs / 140 kg (one worker) |
| Working load | 2,000 lbs / 908 kg |
| D-ring movement | 360 degree rotation; 180 degree pivot |
| Footprint | Approx. 5.5 in x 3.0 in with 2.25 in diameter swivel housing (see spec drawing) |
| Replacement bolt | STM5810KRB |
| Installation | Bolt-on to steel structures; installation kits available to suit the application |
| Standards | ANSI Z359.1-2007; ANSI Z359.7-2011; OSHA 29 CFR 1926.502; OSHA 29 CFR 1910.140 |
The structure carries the load. The steel member and installation hardware must be verified by a qualified person for the intended fall protection load before use. One worker per anchor at 310 lbs maximum - never exceed the 2,000 lb working load in lifting or rigging service, and calculate fall clearance before tying off.
Compliance Standards
ANSI Z359.1-2007
American National Standard safety requirements for personal fall arrest system components, including anchorage connectors.
ANSI Z359.7-2011
Qualification and verification testing of fall protection products by accredited third-party laboratories.
OSHA 29 CFR 1926.502
Federal construction fall protection criteria, including anchorage strength requirements.
OSHA 29 CFR 1910.140
General industry personal fall protection system requirements for maintenance and facility work.
Typical Applications
Installation Overview
Follow the manufacturer's manual. The sequence below is an overview only.
- Inspect. Check the D-ring, swivel housing, locking caps, bolt, and label before each installation.
- Verify structure. Have a qualified person confirm the steel member carries the intended fall protection load.
- Select the kit. Use the installation kit and bolt specified in the manual for your base material and thickness.
- Torque. Install and torque the bolt to the user manual specification.
- Check the swivel. Confirm the D-ring rotates and pivots freely and the key lock is fully seated.
- Connect. Attach the connecting device to the D-ring and verify fall clearance before work begins.
Inspection and Retirement
Inspect before each use, with a documented competent-person inspection at least every 6 months. Pull the equipment from service for any of the conditions below.
- D-ring and bridge: bending, cracks, nicks, or wear at the connection point.
- Swivel action: binding, grinding, or play in the rotation or pivot.
- Locking caps and key lock: damage, spreading, or incomplete seating.
- Bolt and threads: corrosion, thread damage, or loss of torque - replace with STM5810KRB hardware only.
- Markings: missing or illegible product label.
Retire the anchor immediately after any fall arrest event, any deformation or crack, or any condition where it cannot be verified as safe for service.
Fall ProtectionDistributors, LLC Free Tool · No Signup · OSHA 1926.502 Free Interactive Tool Fall Protection Calculator Pick your system. Run the math. Generate a plan. 1Pick Your SystemDetermine fall restraint vs. fall arrest based on your work surface, edge access, and clearance. 2Run the MathCalculate exact fall clearance required below the work surface for your SRL or lanyard setup. 3Generate a PlanGet a printable OSHA-compliant Fall Protection Plan structured around 29 CFR 1926.502(k).
Frequently Asked Questions
Frontline STM5810K Submittals and Documentation
Frontline STM5810K Spec Sheet (PDF)Strengths, materials, dimensions, and the full compliance summary. Frontline STM5810K Test Report (PDF)Third-party test results documenting the rated performance. Frontline STM5810K User Manual (PDF)Installation kits, torque, inspection, and retirement procedures.Compatible and Related Products
- Frontline STMP10K-WO Weld-On Puck. The weld-on mount that gives this swivel anchor family a permanent home on steel.
- Frontline MEGA Swivel 10K + Weld-On Puck Combo. The 10K swivel anchor and weld-on puck kitted together.
- Frontline ST14SH Easy Slider Beam Walker. A sliding I-beam anchor that trails the worker along the flange.
- Frontline RO4W Multifunction 4-Way Anchor. A multifunction anchor for concrete, metal, and wood substrates.
Anchoring to Structural Steel?
Need help specifying the right system for your jobsite? Confirm your application, anchorage, and clearance with us and we will walk through the kit list so the right equipment ships together.
Call 863-703-4522 to talk to a fall protection specialist.
