The Kosto CHK131 Class AE safety harness is engineered for fall arrest and worker retrieval, delivering reliable protection with ergonomic comfort. Made from 100% polyester webbing for excellent resistance to chemicals and wear, it integrates a dorsal aluminum D-ring for fall arrest and two zinc-coated steel shoulder D-rings for vertical extraction. With tongue buckle leg adjustments, 5 points of adjustment, integrated trauma suspension straps, and a seat strap, this harness is designed to meet the needs of professionals working at height in demanding environments.

Key Features

Dual functionality: Certified for Class A fall arrest and Class E retrieval.
Shoulder retrieval D-rings: Two steel D-rings enable safe vertical extraction.
Secure adjustments: Tongue buckle leg straps and 5 total adjustment points ensure fit.
Integrated trauma straps: Resettable suspension straps for post-fall safety.
Durable materials: 100% polyester webbing with zinc-coated steel hardware.
Comfort features: Includes seat strap and PVC X-back to prevent slippage.
Inspection-ready: Impact indicator and label protector with QR code for instructions.
System compatibility: Works with SRLs, lanyards, anchors, and extensions.

Intended Use

The CHK131 is designed for workers at height who need a versatile harness for fall arrest and retrieval. It ensures compliance and safety for a wide range of industrial and construction applications.

Construction sites and roofing
Structural steel assembly and welding operations
Industrial manufacturing and fabrication shops
Oil & gas and petrochemical facilities
Mining and heavy industry
Utilities and energy sector maintenance
Transportation and warehousing
Bridge and infrastructure maintenance
Confined space entry and vertical extraction tasks
Scaffolding and elevated platforms

Product Specifications

Product Type: Class AE safety harness (fall arrest + retrieval)
Material: 100% polyester webbing
Dorsal D-Ring: Aluminum
Shoulder D-Rings: Zinc-coated steel (2)
Buckles: Zinc-coated steel, tongue buckle leg straps
Adjusters: Zinc-coated steel
Trauma Straps: Integrated, resettable
Seat Strap: Included
PVC X-back: Prevents tangling and slippage
Lanyard Keeper: Included
SRL Slots: Dual
Maximum Arresting Force: 8 kN (1800 lbs)
Harness Stretch: 0.6 m (2 ft)
Tensile Strength: 22 kN (5000 lbs)
Capacity: 59–141 kg (130–310 lbs)
Size: Universal
Maintenance: Clean with mild soap and water; hang dry and store properly; inspect before every use

Certifications and Standards

CSA Z259.10-18, Class AE: Canadian standard for full-body harnesses certified for fall arrest (Class A) and retrieval (Class E).
ANSI Z359.11-2021: U.S. standard for full-body harness design and performance.
ANSI A10.32-2023: Safety requirements for fall protection in construction and demolition.
OSHA 1910 / 1926 Subpart M: U.S. federal regulations governing fall protection in general industry and construction.