Federal Specification a-a-50552, Nema/ansi Fb-1, Military Specification Number W-F-406d, W-F-406e, W-F-408d, W-S-610d | Ul 489 | 1.5000 in X 3.2000 in X 2.6000 In | 3.0000 in X 1.5000 in X 3.5000 InSouthern Tier Electric Supply