Ten Thousand Pounds on a Swivel
The STM10K-SA is the 10K MEGA Swivel anchor head by itself — the swivel-only option for crews that already run weld-on pucks or mounting kits and want another head to move between them. The D-ring rotates 360° and pivots 180° side to side, so the connection follows the worker instead of side-loading. Its strength comes from heavy gauge heat treated alloy steel, a reinforced bridge, D-ring, and locking caps, with a patent pending key lock design that keeps the D-ring seated in its swivel housing and prevents the steel from spreading outward during heavy loads.
Rated up to 10,000 lbs tensile strength — double the 5K MEGA Swivel — with a user capacity of 130 to 310 lbs per ANSI and 130 to 425 lbs per OSHA, the yellow zinc plated head mounts on 5/8 inch hardware such as the Frontline 3 x 1 inch weld-on puck with its 5/8 in threaded hole. With the right installation kit it serves steel and concrete structures for fall protection, rescue, lifting, hoisting, and tie-back.
Who Needs This Product
This product is the anchor head of a MEGA Swivel anchorage connector — the rotating tie-off point of a personal fall protection system. The welded puck or mounting kit on the structure is the interface; the worker wears a full body harness; a lanyard or self-retracting lifeline connects to the swiveling D-ring. Buy the swivel only when the mounts are already on the structure and the crew just needs another head.
Features
10,000 lb rated head
Rated up to 10,000 lbs tensile strength — twice the rating of the 5K MEGA Swivel family.
360° + 180° articulation
The D-ring rotates a full circle and pivots 180° side to side, keeping the connecting device aligned with the load path.
Patent pending key lock
Keeps the D-ring seated and locked into its swivel housing, preventing the steel from spreading during heavy loads.
Heat treated alloy steel
Heavy gauge alloy steel, reinforced bridge, D-ring, and locking caps — with a yellow zinc plated finish.
Swivel-only economics
One structure, many welded pucks, one head that moves between them. This listing is the head.
Permanent or temporary
Supported for permanent and temporary installations on steel with the appropriate mounting kit.
Technical Specifications
| SKU | STM10K-SA |
|---|---|
| Type | MEGA Swivel 10K anchor head (swivel only) |
| Tensile strength | Rated up to 10,000 lbs |
| User capacity (ANSI) | 130 to 310 lbs maximum |
| User capacity (OSHA) | 130 to 425 lbs maximum |
| Connector D-ring | Zinc plated alloy steel; 10,000 lbs minimum |
| Finish | Yellow zinc plated |
| Articulation | 360° rotation; 180° side-to-side pivot |
| Mounting | 5/8 in hardware; pairs with Frontline 3 x 1 in weld-on puck (5/8 in-11 threaded hole) |
| Compatible fasteners | 5/8 in plated Grade 8 hardware per the user manual |
| Substrates | Steel and concrete structures with the appropriate installation kit |
This listing is the swivel head only. The STM10K-SA does not include a weld-on puck, bolt, or mounting kit. It carries its rating only when installed on a qualifying mount with the hardware specified in the user manual, on a structure a competent person has verified for the loads involved. One worker per anchor point.
Compliance Standards
ANSI user capacity
The spec sheet rates the anchor for users from 130 to 310 lbs maximum under ANSI guidance.
OSHA user capacity
The spec sheet rates the anchor for users from 130 to 425 lbs maximum under OSHA guidance.
10,000 lb tensile rating
Rated up to 10,000 lbs tensile strength — twice the 5,000 lb anchorage strength OSHA 1926.502 requires for fall arrest.
Rated D-ring
The zinc plated alloy steel connector D-ring is rated at 10,000 lbs minimum.
Typical Applications
Installation Overview
Follow the manufacturer's manual. The sequence below is an overview only.
- Verify the mount. A competent person confirms the welded puck or mounting kit and its structure per the user manual.
- Check the hardware. Use the 5/8 in plated Grade 8 hardware specified by the manual — never substitute unrated bolts.
- Thread the head. Mount the STM10K-SA to the puck or kit and torque to the manual specification.
- Check the swivel. Confirm the D-ring rotates and pivots freely and the key lock keeps it seated in the housing.
- Connect. Attach the lanyard or SRL connector to the D-ring; one worker per anchor point.
- Relocate. When work moves, remove the head and reinstall it on the next verified mount.
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: deformation, spreading, cracks, nicks, or corrosion.
- Swivel action: smooth 360° rotation and 180° pivot with no binding or grinding.
- Key lock and caps: D-ring seated and locked in the housing with no excessive play.
- Mounting threads and hardware: full engagement, correct torque, no thread damage, correct Grade 8 hardware.
- Markings: product label and rating legible.
Retirement triggers: any fall arrest loading, D-ring spreading or deformation, a swivel that binds, key lock damage, thread damage, corrosion, or any condition where the inspector cannot verify the head is fit 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 STM10K-SA Submittals and Documentation
Frontline STM10K-SA Spec Sheet (PDF)Ratings, materials, mounting requirements, and capacity figures. Frontline STM10K-SA User Manual (PDF)Mounting, use, inspection, and retirement procedures.Compatible and Related Products
- Frontline STM585K MEGA Swivel 5K Steel Anchor. The 5,000 lb zinc plated MEGA Swivel for single-user points.
- Frontline STM585K-SS MEGA Swivel 316 Stainless Anchor. The stainless MEGA Swivel for corrosive environments.
- Frontline SWX100N-QPQ-CTS Reinforcement Backer Plate. The 4x6 inch backer plate rated for 5K and 10K MEGA Swivels.
- Frontline RO Commercial Roof Anchor. The ANSI Z359.18 roof anchor for concrete, metal, and wood decks.
Adding 10K Swivel Heads to Your Mounts?
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.
