U-1958B: Germany
5 1/4" - 2 3/4" X 6 1/2" (134mm - 70mm X 167mm) {cap in place}
No markings
Picture courtesy Mike Doyle |
2 3/4" X 5 1/8" (70mm X 130mm) {cap removed}
No markings
Picture courtesy Mike Doyle |
This is a fuse insulator where the top is threaded to protect an enclosed fuse.
U number assignment by Bob Berry November 2023..