The Toyotomi Screw 1T, part number 20478090, is a replacement fastener used in the heat chamber and burner assembly area on select Toyotomi Toyostove Laser vented heaters. It is specified to match the original screw type used to secure related components in the heater’s combustion/heat-exchange section. Replacing missing, damaged, or corroded hardware helps maintain proper component retention and alignment during normal operation.
This screw is typically referenced in parts diagrams near the heat chamber assembly and burner assembly attachment points. It is intended for service replacement when the original screw is stripped, seized, or no longer holds the joint securely. Installation should follow the model-specific service documentation to ensure the screw is placed in the correct location and tightened appropriately for the surrounding materials.
What’s Included: One (1) Toyotomi Screw 1T fastener.
Installation Limits: For service replacement on compatible Toyotomi vented heaters only; install with the appliance powered off and cooled, and follow manufacturer service instructions for placement and tightening.
Compatibility: Toyotomi Toyostove Laser models including Laser 52, Laser 55 (B/C/D), Laser 56, Laser 72, Laser 73, Laser 73AT, Laser 560, Laser 730, Laser 730AT, Laser 731, Laser 732, Laser 733, and Laser 734 (heat chamber/burner assembly fastening locations as specified by the model parts diagram).
