STMP10K-WO Weld-On Puck for MEGA Swivel 10K Anchors
The STMP10K-WO Weld Puck Kit is the weld-on mount for Frontline 10K swivel steel anchors. The 3 x 1 inch unplated mild steel puck welds permanently to structural steel with a 3/8 inch minimum fillet, leaving a 5/8-11 threaded hole that accepts the MEGA Swivel anchor wherever and whenever the work calls for a tie-off point.
A plated Grade 8 5/8-11 bolt and internal tooth lock washer are included in the kit. Weld the puck once and the anchor itself stays removable and reusable - thread it on for the task, take it to the next location when the work moves. The welding procedure must be approved by an engineer or other qualified person as compatible with the structural and operational characteristics of the selected installation location.
Who Needs This Product
This product is a weld-on mounting puck - the permanent half of a two-piece steel anchorage system. Plant engineers and steel fabricators weld pucks at engineered tie-off locations, then crews carry one MEGA Swivel 10K anchor from puck to puck. The puck does not include the swivel anchor: pair it with the Frontline STM10K-SA, or order the combo kit that packages both.
Features
Permanent weld-on mount
Gives the 10K MEGA Swivel a fixed home on structural steel - the anchor threads on and off as the work moves.
3 x 1 inch puck
Compact unplated mild steel puck with a 5/8-11 threaded hole, sized for a 3/8 inch minimum fillet weld.
Grade 8 hardware included
Plated 5/8 inch Grade 8 bolt and internal tooth lock washer ship in the kit.
Torque spec on the drawing
75 to 90 ft-lbs (100 to 120 Nm) bolt torque per the installation drawing.
Engineer-approved welding
The weld procedure must be approved by an engineer or qualified person for the structure at the install location.
Permanent and temporary use
Supports permanent puck locations on steel with a removable, reusable swivel anchor on top.
Technical Specifications
| SKU | STMP10K-WO |
|---|---|
| Type | Weld-on mounting puck kit for Frontline 10K swivel anchors |
| Puck size | 3 in diameter x 1 in thick |
| Threaded hole | 5/8-11 |
| Weld | 3/8 in (9.5 mm) minimum fillet per the installation drawing |
| Hardware included | Plated Grade 8 5/8-11 bolt and internal tooth lock washer |
| Bolt torque | 75 to 90 ft-lbs (100 to 120 Nm) |
| Puck material | Unplated mild steel (weldable) |
| Fastener material | Zinc plated steel, Grade 8 |
| Anchor rating | Mates with 10,000 lb tensile strength MEGA Swivel 10K anchors |
| User capacity | 130 to 310 lbs max per ANSI; 130 to 425 lbs max per OSHA |
| Compatible anchor | Frontline STM10K-SA MEGA Swivel 10K (sold separately or as a combo kit) |
Welding is engineering-controlled. The welding procedure must be approved by an engineer or other qualified person as compatible with the structural and operational characteristics of the installation location, and the weld must meet the 3/8 inch minimum on the installation drawing. The completed anchorage must be verified for the intended fall protection load - one worker per anchor.
Compliance Standards
ANSI User Capacity
Rated for users from 130 to 310 lbs maximum under the ANSI capacity range on the spec sheet.
OSHA User Capacity
Rated for users from 130 to 425 lbs maximum under the OSHA capacity range on the spec sheet.
10,000 lb Anchor Rating
The mated MEGA Swivel 10K anchor carries a 10,000 lb tensile strength rating.
Qualified-Person Welding
Anchorage qualification rests with a qualified person - the weld procedure must be engineer approved for the structure.
Typical Applications
Installation Overview
Follow the manufacturer's manual. The sequence below is an overview only.
- Inspect. Check the puck, threads, and included hardware before installation.
- Qualify the weld. Have an engineer or qualified person approve the weld procedure for the structure.
- Position. Locate the puck at the engineered anchor location on clean, prepared steel.
- Weld. Apply the 3/8 inch minimum fillet weld per the installation drawing, then let it cool and inspect the weld.
- Mount the anchor. Thread the Grade 8 bolt with lock washer through the swivel anchor into the puck and torque to 75 to 90 ft-lbs.
- 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.
- Weld: cracks, undercut, corrosion, or any visible weld defect.
- Threads: damage, debris, or corrosion in the 5/8-11 hole.
- Bolt and lock washer: thread damage, corrosion, or loss of torque.
- Puck body: deformation, gouges, or heavy rust beyond surface oxide.
- Documentation: the puck location remains part of the engineered anchorage plan.
Remove a puck location from service immediately after any fall arrest event, any weld or thread damage, or any condition where it cannot be verified as safe - and have the weld re-qualified before it returns to the plan.
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Frequently Asked Questions
Frontline STMP10K-WO Submittals and Documentation
Frontline STMP10K-WO Spec Sheet (PDF)Puck dimensions, weld callout, hardware, and capacity ratings. Frontline STMP10K-WO User Manual (PDF)Welding requirements, torque, inspection, and retirement procedures.Compatible and Related Products
- Frontline MEGA Swivel 10K + Weld-On Puck Combo. The puck and the 10K swivel anchor packaged as one kit.
- Frontline STM5810K MEGA Swivel 10K Steel Anchor. The bolt-on 10K swivel anchor for steel structures.
- Frontline RW Weld-On Commercial Roof Anchor. A weld-on U-rod anchor for structural steel members.
- Frontline RO4W Multifunction 4-Way Anchor. A multifunction anchor for concrete, metal, and wood substrates.
Engineering Permanent Tie-Off Points?
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.
