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 5996-01-344-7957
NSN 5905-01-023-5829
NSN 6150-01-651-0342
NSN 5945-01-593-7292
NSN 6220-01-649-0930
NSN 7035-01-200-4751
NSN 6645-01-159-8787
NSN 5920-01-573-7227
NSN 6145-01-205-1097
NSN 6110-00-121-0975
NSN 5945-01-317-3193
NSN 5985-00-186-2236