W25 (nuclear warhead)

W25 nuclear warhead
W25 warhead being loaded onto an AIR-2 Genie rocket.
TypeNuclear weapon
Place of originUnited States
Production history
DesignerLos Alamos National Laboratory
Designed1954 to 1956
ProducedMay 1957 to May 1960
No. built3150
Variants2
Specifications
Mass220 lb (100 kg)
Length26 in (660 mm)
Diameter17.25 in (438 mm)

Blast yield1.7 kilotonnes of TNT (7.1 TJ)

The W25 was a small nuclear warhead that was developed by the Los Alamos Scientific Laboratory for air-defense use. It was a fission device with a nominal yield of 1.7 kt.

The W25 was used for the MB-1 "Ding Dong", an unguided air-to-air rocket used by US Northrop F-89 Scorpion, F-101 Voodoo, and F-106 Delta Dart interceptor aircraft, and Canadian CF-101 Voodoo aircraft, as part of NATO nuclear sharing. The MB-1 entered service in 1957 and was eventually redesignated the AIR-2 Genie. Limited numbers were carried by Air National Guard F-106 aircraft until December 1984.