Mfr name for this item is "fuse spring"
A rectangular or irregular shaped device with one or more holes for attaching to a hook or the like. Constructed of such material that will fuse (melt) at a known temperature. It is used in conjunction with autoomatic closing devices for door, window, automatic appliances and the like. Excludes fuse, link, thermal.
NSN 6320-01-578-6006
NSN 6610-01-633-8931
NSN 5999-01-171-3783
NSN 5999-01-040-6401
NSN 5990-01-124-9063
NSN 6150-00-222-5302
NSN 6685-01-425-1589
NSN 5835-00-729-9305
NSN 5920-00-903-1849
NSN 6685-01-526-2838
NSN 5945-01-503-8416
NSN 5895-01-019-0935