Hammerhead Series Harness 5PT Padded Back QCB Chest Tongue and Buckle Leg Straps SRL Back Plate Side D-Rings

Hammerhead Series Full Body Harness — 5-Point Padded, SRL Back Plate, QCB Chest, Side D-Rings

The Palmer Safety Hammerhead Series Full Body Harness is a professional-grade fall protection harness engineered for contractors and trades professionals working at height. Featuring a 5-point adjustment system, sewn-in shoulder and back padding, a steel Quick Connect chest buckle, and a dedicated SRL back plate for dual self-retracting lifeline connection, this harness is built for demanding jobsite conditions. Available in Small, Universal, and 2XL sizing, it conforms to ANSI Z359.11-2021 and A10.32-2012 standards. The blue top and black heavy-duty bottom construction provides clear visual identification on site.

Technical Specifications

Available Sizes

Unlike basic single-D-ring harnesses, the Hammerhead Series integrates a dedicated SRL back plate that allows easy dual SRL connection without additional hardware, while the sewn-in shoulder and back padding reduces fatigue during extended wear. The combination of a steel Quick Lock chest buckle and tongue buckle leg straps provides a secure, field-proven fit that meets the latest ANSI Z359.11-2021 requirements.

Key Features & Benefits

SRL Back Plate for Dual SRL Connection

The integrated SRL back plate is specifically designed to accommodate easy dual self-retracting lifeline connection directly at the dorsal attachment point. This eliminates the need for additional adapters and ensures a secure, compatible connection for contractors using twin-leg SRL systems.

5-Point Adjustment System

Five independent adjustment points allow the harness to be precisely fitted to a wide range of body types across the Small, Universal, and 2XL size range. A properly adjusted harness is critical to ensuring the fall arrest system performs as designed and that arresting forces are distributed correctly across the body.

Steel Quick Lock Chest Buckle

The steel Quick Connect chest buckle allows fast donning and doffing without sacrificing security. Alloy steel construction with a galvanized finish resists corrosion in outdoor and harsh jobsite environments.

Sewn-In Shoulder and Back Padding

Integrated padding at the shoulder and back reduces pressure points and fatigue during extended use at height. For contractors spending full shifts in a harness, reduced fatigue directly supports sustained productivity and focus on the task.

Hip D-Rings for Work Positioning

Side (hip) D-rings provide dedicated attachment points for work positioning lanyards, keeping the dorsal D-ring reserved exclusively for fall arrest. Per the instruction manual, hip-level D-rings must never be used for fall arrest — they are rated for work positioning and restraint applications only.

High-Strength Polyester Webbing

1.73 in. wide polyester webbing with a 5,000 lb. breaking strength and high-tenacity polyester stitching thread delivers the structural integrity required for ANSI-compliant fall arrest systems. Polyester webbing maintains strength across a broad range of environmental conditions encountered on construction sites.

Common Applications

Personal Fall Arrest (Class A)

Connect a fall arrest subsystem — such as a lanyard, SRL, or energy absorber — to the dorsal D-ring between the shoulder blades. The system must be rigged to limit free fall to 6 ft. (1.8 m) per ANSI Z359.11.

Dual SRL Connection

The integrated SRL back plate enables straightforward connection of dual self-retracting lifelines for 100% tie-off applications, such as moving between anchor points on steel erection or roofing work.

Work Positioning (Class P)

The side (hip) D-rings serve as attachment points for work positioning lanyards, allowing the user to be supported at a work position while a separate fall arrest backup system remains connected at the dorsal D-ring.

Restraint Systems

The harness can be used as part of a restraint system to prevent the user from reaching an unprotected edge or floor opening, typically paired with a restraint lanyard connected to an appropriate anchorage.

Controlled Descent

Harnesses in this series are suitable for controlled descent applications when connected to a compatible descender or evacuation system, per the harness instruction manual.

Compatible Materials

• Concrete structures and formwork
• Steel framing and structural steel
• Wood framing and roof structures
• Fixed ladders and climbing structures
• Scaffolding and elevated work platforms
• Confined space entry structures (with appropriate rescue configuration)

Product Documents

• Download Tech Sheet
• Download Full Body Harness Instruction Manual
• Download Declaration of Conformance
• SRL170 Dual Leg SRL Converter Installation Guide

Application Instructions

Pre-Use Inspection

1. Inspect all webbing for cuts, abrasions, burns, chemical damage, or unusual wear before each use.
2. Inspect all metal components — D-rings, buckles, and back plate — for deformation, corrosion, or damage.
3. Verify all stitching is intact with no broken or frayed threads.
4. Check all labels (inspection/ID, warning/instruction, standards) are legible and present.
5. Remove from service immediately if any defect is found or if the harness has been subjected to a fall arrest event.

Donning the Harness

1. Hold the harness by the dorsal D-ring and allow all straps to hang freely; untangle any twisted webbing.
2. Slip the shoulder straps over each shoulder so the dorsal D-ring is positioned between the shoulder blades.
3. Connect the chest strap using the steel Quick Lock (Quick Connect) chest buckle and adjust for a snug fit across the sternum.
4. Route each leg strap under and around the corresponding thigh and connect using the tongue buckle; adjust so straps are snug but not restrictive.
5. Adjust the torso and shoulder straps using the 5-point adjustment system until the harness fits securely with no excessive slack.
6. Tuck all excess webbing into keepers to prevent entanglement.

Making Connections

1. Connect the fall arrest subsystem (SRL, energy-absorbing lanyard, etc.) only to the dorsal D-ring or the SRL back plate — never to the hip D-rings for fall arrest.
2. Connect work positioning lanyards only to the side (hip) D-rings.
3. Use only self-locking connectors; verify all connectors are fully closed and locked before use.
4. Ensure all connectors are compatible in size, shape, and strength with the harness attachment elements; do not connect two active components (snap hooks or carabiners) to a single D-ring simultaneously.
5. Verify the anchorage can support at least 5,000 lbs. per user for fall arrest applications per OSHA 1926.500 and ANSI Z359.11.

Post-Use and After a Fall

1. Remove the harness from service immediately if it has been subjected to the forces of a fall arrest event.
2. Contact Palmer Safety or your distributor regarding replacement policies for components involved in a fall.
3. Store the harness away from UV light, heat sources, chemicals, and sharp edges when not in use.

Safety Data Summary

Hazard Information

• Equipment subjected to a fall arrest must be immediately removed from service — continued use after a fall event may result in serious injury or death.
• Do not use around moving machinery or electrical hazards.
• Avoid contact with sharp edges and abrasive surfaces that may damage webbing.
• Do not expose synthetic webbing to slag, hot sparks, open flames, or other heat sources.
• Do not expose equipment to chemicals, caustic environments, or high levels of organic acids or bases that may degrade materials.
• Do not expose to prolonged UV light, which can cause degradation of synthetic webbing.
• Swing falls — occurring when the anchorage is not directly above the fall point — can cause serious injury; minimize by working as close to the anchorage as possible.
• Pregnant women and minors should not use this equipment.
• Consult a doctor if there is any reason to doubt a user's ability to withstand fall arrest forces.

Personal Protective Equipment

• Use as part of a complete personal fall arrest system including a compatible connecting subsystem and anchorage.
• Use heat-resistant materials when working near heat sources such as welding operations.
• A rescue plan and the means to implement it must be in place before using this equipment at height.

Safe Handling

• Do not alter the equipment in any way; repairs must be performed only by the manufacturer or authorized entities.
• Do not use natural fiber materials (manila, cotton, etc.) as part of a fall protection system.
• Never use fall protection equipment for towing or hoisting.
• Store away from UV light, chemicals, heat, and sharp edges.
• Inspect before each use; have a qualified person perform periodic inspections on a regular basis.
• Use only Palmer Safety approved components and subsystems unless otherwise noted; substitutions may jeopardize compatibility and safety.

Frequently Asked Questions

Q: What is the weight capacity of this harness?
A: The harness is rated for users with a combined weight (including clothing and tools) of up to 310 lbs. per ANSI Z359.11. The harness is available up to 420 lbs. capacity depending on configuration — refer to the product label and instruction manual for your specific model.

Q: Can I connect a dual SRL directly to this harness without an adapter?
A: Yes. The harness features a dedicated SRL back plate specifically designed for easy dual SRL connection at the dorsal attachment location, eliminating the need for a separate adapter in most dual SRL applications.

Q: Can the hip (side) D-rings be used for fall arrest?
A: No. The hip D-rings are rated for work positioning and restraint applications only. Fall arrest subsystems must be connected exclusively to the dorsal D-ring or the SRL back plate.

Q: What should I do if the harness has been involved in a fall?
A: Remove the harness from service immediately after any fall arrest event, regardless of visible damage. Contact Palmer Safety or your distributor regarding replacement policies before returning any component to service.

Q: What standards does this harness conform to?
A: The harness meets or exceeds ANSI Z359.11-2021 and A10.32-2012.

Q: What is the maximum free fall distance allowed with this harness?
A: Personal fall arrest systems used with this harness must be rigged to limit free fall to 6 feet (1.8 m) per ANSI Z359.11. Restraint systems must be rigged so that no vertical free fall is possible.