Lincoln Electric KH619 Polycarbonate Replacement Lens

Product Description

The LINCOLN ELECTRIC KH619 is a clear polycarbonate replacement lens designed for welding helmets and face shields that use an inside-mount window configuration. Measuring 5.25 inches wide by 4.5 inches high with a thickness of 0.25 inches, this lens provides a reliable protective barrier against sparks, spatter, and debris. Manufactured from polycarbonate, it offers impact resistance suitable for demanding shop and field environments. The KH619 meets ANSI Z87.1 safety standards, making it appropriate for use in applications where certified eye protection is required. Welding technicians and fabricators install this lens as a direct service replacement when the original lens becomes scratched, pitted, or otherwise compromised.

The KH619 is suited for use in light industrial, fabrication, and maintenance welding environments where inside-mount replacement lenses are required. It is a stock service item typically kept on hand by welding shops and maintenance departments to minimize downtime during helmet servicing. The clear lens shade allows it to function as an outer or inner protective cover plate rather than a shaded filter lens, making it appropriate for grinding and general eye protection applications as well as welding support tasks.

Key Features

• Clear polycarbonate construction provides impact-resistant eye protection
• Inside mount design for direct drop-in replacement in compatible helmet windows
• Dimensions of 5.25 inches wide by 4.5 inches high by 0.25 inches thick
• Meets ANSI Z87.1 certified safety standards
• No diopter correction — flat lens for standard protective use
• Sold individually for single-unit service replacement

Compatibility

Designed as an OEM-style inside-mount replacement lens for welding helmets and face shields requiring a 5.25 inch wide by 4.5 inch high window cover plate.

Installation Notes

Installation is performed by welding technicians or the end user during routine helmet maintenance. Before replacing the lens, ensure the helmet or face shield is removed from service and inspected for frame damage. Seat the lens fully into the inside-mount retainer channel and confirm it is secure before returning the helmet to use. Follow the helmet manufacturer's service instructions and applicable ANSI Z87.1 guidelines when servicing eye protection equipment.