DT Drop Thru Anchor, Round Plate with Cable
The Frontline DT drop thru anchor is a removable and reusable anchorage connector designed for overhead applications. Drop the coated steel round plate through a 1-3/4 in to 2 in hole in the deck, and the plate seats flat on the underside while the aircraft cable passes back up through the hole to present a zinc plated swivel ring as your tie-off point.
The anchor delivers 5,000 lbf tensile strength with a 1,000 lb working load and a 310 lb max user weight, and is offered in four configurations: a 6 in or 12 in round plate paired with a 2 ft or 6 ft polyurethane-sleeved cable. Per the Frontline spec sheet it is designed to ANSI Z359.1-2007 and Z359.7-2011 and aligns with OSHA 29 CFR 1926.502 and 1910.140.
Product Video
See the Frontline multifunction anchors used as versatile tie-off points across roof and structural applications.
Who Needs This Product
This product is a drop-through anchorage connector for personal fall arrest or restraint systems on decking and overhead work. Steel erectors, deck crews, and concrete contractors use it to create a tie-off point at a drilled or formed hole in steel or concrete, then remove it and reuse it at the next location. Each worker still needs a full body harness and a compatible connecting device attached to the swivel ring.
Features
Drop-through simplicity
Lower the plate through the hole, let it seat flat on the underside, and the anchor is ready - no bolts, no welding.
Removable and reusable
Lift, relocate, and re-deploy the same anchor across the deck as work progresses.
Swivel ring tie-off
The zinc plated steel swivel ring follows the worker and reduces cable twist during use.
Polyurethane-sleeved cable
Aircraft cable protected by polyurethane tubing rides cleanly in the hole edge.
Steel and concrete substrates
Rated for 1/4 in steel at 4 in from any edge, or 4 in concrete at 12 in from any edge.
Four configurations
6 in or 12 in plate with 2 ft or 6 ft cable covers thin decks through deep assemblies.
Technical Specifications
| SKU | DT602 (6 in plate, 2 ft cable); variants DT606, DT1202, DT1206 |
|---|---|
| Type | Drop-through anchorage connector, removable and reusable |
| Plate | Coated steel round plate, 6 in or 12 in diameter |
| Cable | Aircraft cable with polyurethane tubing, 2 ft or 6 ft |
| Swivel ring | Zinc plated steel |
| Tensile strength | 5,000 lbf / 22 kN |
| Working load | 1,000 lbs / 454 kg |
| Max user weight | 310 lbs / 140 kg (one worker) |
| Hole requirement | 1-3/4 in to 2 in diameter |
| Steel substrate | Min 1/4 in thick, min 4 in from any edge or corner |
| Concrete substrate | Min 4 in thick, min 12 in from any edge or corner |
| Standards | ANSI Z359.1-2007; ANSI Z359.7-2011; OSHA CFR 1926.502; OSHA CFR 1910.140 |
The substrate carries the load. The hole size, material thickness, and edge distances in the spec sheet are not suggestions: 1-3/4 in to 2 in hole, 1/4 in steel at 4 in from any edge, or 4 in concrete at 12 in from any edge. Verify the structure with a qualified person before anyone ties off, and use one worker per anchor at 310 lbs maximum.
Compliance Standards
ANSI Z359.1-2007
American National Standard safety requirements for personal fall arrest systems, subsystems and components.
ANSI Z359.7-2011
Qualification and verification testing of fall protection products.
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.
Typical Applications
How to Install the DT Drop Thru Anchor
Follow the manufacturer's manual. The sequence below is an overview only.
- Verify the substrate. Confirm hole diameter (1-3/4 in to 2 in), material thickness, and edge distances per the spec sheet with a qualified person.
- Inspect the anchor. Check the plate, cable, tubing, and swivel ring for damage before every installation.
- Drop the plate through. Tilt and lower the round plate through the hole.
- Seat the plate. Pull up on the cable so the plate centers and seats flat against the underside of the deck.
- Connect. Attach your connecting device to the swivel ring and perform a pull test.
- Verify clearance. Confirm fall clearance below the work surface 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.
- Plate: bending, cracks, corrosion, or coating loss.
- Cable: broken wires, kinks, birdcaging, or crushed sections under the tubing.
- Tubing: cuts or wear exposing the cable.
- Swivel ring: deformation, cracks, corrosion, or restricted rotation.
- Markings: labels must be present and legible.
Retire the anchor immediately after any fall arrest event or if any inspection point fails. Destroy retired equipment so it cannot return to 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 DT Submittals and Documentation
Frontline DT Spec Sheet (PDF)Plate sizes, cable lengths, strength ratings, and hole requirement chart for all four DT models. Frontline DT User Manual (PDF)Installation, system limitations, inspection, and retirement procedures for DT602 through DT1206. Frontline Catalog (PDF)The full Frontline Fall Protection product catalog with the complete anchor, lanyard, and SRL range.Compatible and Related Products
- Frontline MPW Wire Rope Choker Anchor. A wrap-around wire rope anchorage sling for beams and structure.
- Frontline MPS Cross Arm Strap. A reinforced webbing cross arm strap for horizontal members.
- Frontline RK050V50 Combat Plus Roofers Kit. A complete harness, lifeline, and anchor kit for roofing crews.
Need a Reusable Tie-Off Point for Deck Work?
Need help confirming the right plate size, cable length, or substrate detail 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.
