Positioning Device Rebar

Positioning Device Rebar – ANSI Z359.3-2007 Compliant Y-Shaped Chain Lanyard for Work Positioning

The Palmer Safety A00004 Rebar Positioning Device is a heavy-duty, Y-shaped chain lanyard engineered for work positioning applications on rebar and structural steel. Designed for ironworkers, construction crews, and trades professionals working at elevation, it features a 2-1/4" swivel rebar hook at the top and two 3/4" forged clevis snap hooks at the opposing ends for secure, adjustable positioning. Built from Grade 80 alloy steel chain with a minimum tensile strength of 5,000 lbs., this device meets or exceeds ANSI Z359.3-2007 requirements. It is available in a 24" length and is part of a broader Palmer Safety personal restraint and work positioning system.

Technical Specifications

Unlike web or rope positioning lanyards, the A00004 uses a high-tensile Grade 80 alloy steel chain that resists cutting, abrasion, and heat exposure common on active construction sites. The swivel rebar hook allows quick, tool-free attachment to rebar without requiring the hook to be oriented in a fixed direction, reducing setup time and repositioning effort compared to fixed-gate alternatives.

Key Features & Benefits

Y-Shaped Double Lanyard Design

The double, Y-shaped configuration allows the two end snap hooks to anchor at separate points simultaneously, giving the worker a stable, two-point positioning stance. This geometry is particularly effective when working on rebar grids or structural frames where bilateral support is needed to maintain body position hands-free.

2-1/4" Swivel Rebar Hook

The oversized swivel rebar hook at the top of the lanyard is specifically sized to capture rebar and structural members securely. The swivel action allows the hook to rotate freely under load, preventing the chain from twisting and reducing stress concentrations at the connection point during repositioning.

Forged Clevis Snap Hooks

Both end hooks are 3/4" forged clevis snap hooks, providing a robust, positive-locking connection to harness D-rings or anchor points. Forged construction delivers superior strength and fatigue resistance compared to stamped hardware, which matters when the device is subjected to repeated loading cycles throughout a shift.

Grade 80 Alloy Steel Chain

The 0.31" diameter chain links are manufactured to Grade 80 standards with a minimum tensile strength of 5,000 lbs., making the chain the strongest element in the assembly. Alloy steel construction resists deformation under sustained load and is far more resistant to sharp-edge damage than synthetic webbing or rope lanyards.

Zinc-Plated, Deburred & Polished Finish

Zinc plating provides corrosion resistance in outdoor and wet environments, extending service life on long-duration projects. The deburred and polished finish eliminates sharp edges that could snag PPE, gloves, or adjacent materials during handling and repositioning.

ANSI Z359.3-2007 Compliance

The A00004 meets or exceeds ANSI Z359.3-2007, the American National Standard for work positioning and travel restraint equipment. Compliance with this standard confirms the device has passed both static (5,000 lbs. for 1 minute) and dynamic (282 lbs. free fall generating 3,600 lbs. force) strength tests, satisfying OSHA-aligned fall protection program requirements.

Common Applications

Ironwork & Rebar Installation

The swivel rebar hook is purpose-built for attachment to rebar cages and structural rebar, making this device the standard choice for ironworkers positioning themselves while tying or placing rebar at elevation.

Structural Steel Construction

The Y-shaped chain lanyard can be looped around or hooked to structural steel members, allowing workers to maintain a stable, hands-free position while bolting, welding, or inspecting connections.

Construction & Demolition

As noted in the Palmer Safety lanyard manual, applications include general construction and demolition work where a worker must be restrained or positioned at a fixed work location to prevent reaching a fall hazard.

Maintenance & Inspection Work

The device is suitable for maintenance and inspection tasks at elevation where a positioning lanyard is required to keep the worker in a stable location while both hands are occupied with tools or equipment.

Oil Production & Industrial Sites

Palmer Safety's instructions identify oil production as a supported application, and the alloy steel chain construction is well-suited to industrial environments where synthetic lanyards may be exposed to chemicals, heat, or abrasive surfaces.

Compatible Materials

• Rebar (deformed and smooth bar)
• Structural steel members and beams
• Harness dorsal and sternal D-rings (3/4" snap hook compatible)
• Anchor points and anchorage connectors rated for positioning loads

Product Documents

• Download Tech Sheet
• Download Manual – Shock Absorbing Lanyards User Instructions
• SRL170 Installation Quick Guide

Application Instructions

System Setup & Use

1. Read the full Palmer Safety Lanyards User Instructions manual before use. This device is part of a personal restraint or work positioning system — all system components must be inspected and used per their respective manufacturer instructions.
2. Identify a suitable anchorage point (e.g., rebar or structural steel member) capable of supporting the required positioning loads. The anchorage must be located to prevent any vertical free fall — this device is a positioning/restraint lanyard, not a fall arrest lanyard.
3. Attach the 2-1/4" swivel rebar hook to the selected anchorage point. Confirm the hook gate is fully closed and locked.
4. Connect the two 3/4" forged clevis snap hooks to the appropriate D-rings on a compatible full-body harness or body belt. Confirm both snap hooks are fully engaged and locked before applying load.
5. Adjust positioning as needed. The swivel rebar hook allows rotation to accommodate repositioning without unclipping from the anchor.
6. Inspect the device before each use for signs of deformation, corrosion, cracked links, damaged hooks, or any alteration. Remove from service immediately if any defect is found.

Frequently Asked Questions

Q: Is the A00004 a fall arrest lanyard?
A: No. The A00004 is a work positioning and restraint device. It is designed to position or support the user and to prevent the user from reaching a fall hazard. It must be used in a manner that prevents any vertical free fall. It is not rated or intended as a standalone fall arrest lanyard.

Q: What standard does this device comply with?
A: The A00004 meets or exceeds ANSI Z359.3-2007, the American National Standard for work positioning and travel restraint equipment. It has been tested to 5,000 lbs. static strength for 1 minute and dynamically tested with a 282 lb. free fall generating 3,600 lbs. of force.

Q: What is the chain grade and minimum tensile strength?
A: The chain is Grade 80 alloy steel with a minimum tensile strength of 5,000 lbs. and a link diameter of 0.31".

Q: Can this device be used with a self-retracting lifeline (SRL)?
A: Per the Palmer Safety lanyard instructions, a D-ring extension assembly from their product line may be used as part of a personal fall arrest system when attached to a self-retracting lifeline or an energy absorbing lanyard. Consult the full manual and the SRL manufacturer's instructions to confirm compatibility before combining components.

Q: What is the available length for this model?
A: The A00004 is available in a 24" length and weighs 4.9 lbs. ± 0.2 lbs.