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United States' T Number Designations
- T1 Multiple Gun Motor Carriage: Dual .30 cal MG on Dodge 1/2 ton 4x4.1
- T1 Gun Motor Carriage: Bofors 40 mm on Mack T3 Halftrack.1
- T1 Gun Motor Carriage: 3" AA gun on Cletrac MG-2 Tractor.1 Standardized as M5.1
US Ordnance Dept1 - T1E1 Mine Exploder: Based on M4 Medium Tank.
- T1E1 Multiple Gun Motor Carriage: Bendis dual .50 cal turret on M2 Halftrack.1
- T1E2 Mine Exploder: Based on M4 Medium Tank.
- T1E2 Multiple Gun Motor Carriage: Maxson dual (later quad) .50 cal turret on M2 Halftrack.1
- T1E3 Mine Exploder: Based on M4 Medium Tank.
- T1E3 Multiple Gun Motor Carriage: Electrodynamic dual .50 cal turret on M2 Halftrack.1
- T1E4 Mine Exploder: Based on M4 Medium Tank.
- T1E4 Multiple Gun Motor Carriage: Quad .50 cal turret on M3 Halftrack.1 Standardized as M13.1 On M5 Halftrack standardized as M14.1
- T1E5 Mine Exploder: Based on M4 Medium Tank.
- T1E6 Mine Exploder: Based on M4 Medium Tank.
- T2 Heavy Tractor:
- T2 Mine Exploder Flail: Based on M4 Medium Tank.
- T2 Gun Motor Carriage: Forward firing 37 mm gun on jeep.1
- T2E1 Gun Motor Carriage: Rearward firing 37 mm gun on jeep.1
- T2E1 Mine Exploder: Based on M4 Medium Tank.
- T2E2 Mine Excavator: Based on M4 Medium Tank.
- T3 Howitzer Motor Carriage: 75 mm howitzer on M1 Combat Car.1 Prototype for T17.1
- T3 Mine Exploder: Based on M4 Medium Tank.
- T3E1 Mine Exploder: Based on M4 Medium Tank.
- T3E2 Mine Exploder: Based on M4 Medium Tank.
- T4: Pre-war designation for any mortar carried on a track laying vehicle.1
- T4 Mine Excavator: Based on M4 Medium Tank.
- T4 Mine Exploder: Based on M4 Medium Tank.
- T5: Pre-war designation for any mortar carried on a wheeled vehicle.1
- T5 Mine Excavator: Based on M4 Medium Tank.
- T5E3 Mine Excavator: Based on M4 Medium Tank.
- T6 Gun Motor Carriage: 155 mm on M3 Medium Tank chassis.1 Standardized as M12.1
- T6 Mine Excavator: Based on M4 Medium Tank.
- T6E1 Multiple Gun Motor Carriage: Dual Bofors on M24 Light Tank chassis.1
- T7 Gun Motor Carriage: 3" gun on trackless tank.1 Project only.1
- T7 Light Tank:
- T7 Mine Exploder: Based on M4 Medium Tank.
- T7E2 Light Tank:
- T8 Gun Motor Carriage: Forward firing 37 mm gun on Ford Swamp Buggy.1
- T8 Mine Exploder: Based on M4 Medium Tank.
- T8E1 Reconnaissance Vehicle: Dual .30 cal MGs mounted on M3 Light Tank.1
- T9 Howitzer Motor Carriage: 105 mm howitzer on Cletrac MG-5 Tractor.1 Project only.1
- T9 Mine Exploder: Based on M4 Medium Tank.
- T9E2 Mortar Carriage: 81 mm mortar on T9 Light Tank chassis.1 Project cancelled.1
- T9E3 Mortar Carriage: 81 mm mortar on T9 Light Tank chassis.1 Used wider tracks.1 Project cancelled.1
- T10 Amphibian Light Tank:
- T10 Mine Exploder: Based on M4 Medium Tank.
- T10 Multiple Gun Motor Carriage: Dual Oerlikon on M2 Halftrack.1
- T10E1 Multiple Gun Motor Carriage: Dual Oerlikon on M3 Halftrack.1
- T11: Not used.1 Pre-war T11 Armored Car was still in service.1
- T11 Mine Exploder: Based on M4 Medium Tank.
- T12 Gun Motor Carriage: French 75 mm gun on M3 Halftrack.1 Later shield added.1 Standardized as M3.1
- T12 Mine Exploder: Based on M4 Medium Tank.
- T13 Gun Motor Carriage: Forward firing 37 mm gun on 6 x 6 jeep.1
- T13 Light Tank:
- T14 Assault Tank:
- T14 Gun Motor Carriage: Rearward firing 37 mm gun on 6 x 6 jeep.1
- T14 Mine Exploder: Based on M4 Medium Tank.
- T15 Gun Motor Carriage: 3" gun on Ford 6 x 6 chassis.1 Project only.1
- T15 Mine Resistant Vehicle: Based on M4 Medium Tank.
- T15E1 Mine Resistant Vehicle: Based on M4 Medium Tank.
- T15E2 Mine Resistant Vehicle: Based on M4 Medium Tank.
- T16 Gun Motor Carriage: 4.5" gun on chassis built from T7 and M3 Light Tank components.1
- T16 Halftrack With Roof: Armour roof with .50 cal MG in front and .30 cal MG in rear.1
- T16E1 Gun Motor Carriage: Modified T16.1
- T17 Howitzer Motor Carriage: 75 mm howitzer on M5A1 Light Tank chassis.1 Project only.1
- T17E1 Howitzer Motor Carriage: 75 mm howitzer in cast and welded turret on M5A1 Light Tank chasses.1 Standardized as M8.1
- T17E2 Armored Car: With Fraser Nash AA turret on T17E1 Armored Car.1
- T18 Howitzer Motor Carriage: 75 mm howitzer in cast hull on M3 Light Tank chassis.1
US Ordnance Dept1 - T19 Howitzer Motor Carriage: 105 mm howitzer on M3 Halftrack.1 Later with various types of shields.1
- T19 Mortar Carrier: 81 mm mortar on M2 Halftrack.1 Standardized as M4 Mortar Carrier.1
- T20 Gun Motor Carriage: 3" gun on M3 Light Tank chassis.1 Project only.1
- T21 Gun Motor Carriage: 37 mm gun on Dodge 3/4 Ton 4 x 4.1 Different types of shields.1 Standardized as M4.1 Later standardized as M6.1
- T21 Light Tank:
- T21 Mortar Carrier: Rear firing 4.2" mortar on M3 Halftrack.1
- T21E1 Mortar Carrier: Forward firing 4.2" mortar on M3 Halftrack.1
- T22 Cargo Carrier:
- T22 Gun Motor Carriage: 37 mm gun on Ford 6 x 6 chassis.1 Name later changed to T22 Armored Car.1
- T22 Medium Tank:
- T22E1 Gun Motor Carriage: 37 mm gun on Ford 6 x 6 chassis.1 Name later changed to T22E1 Armored Car.1
- T23 Gun Motor Carriage: 37 mm gun on Fargo 6 x 6 chassis.1 Name later changed to T23 Armored Car.1
- T23 Medium Tank:
- T23E1 Gun Motor Carriage: 37 mm gun on Fargo 4 x 4 chassis.1 Name later changed to T23E1 Armored Car.1
- T24 Gun Motor Carriage: 3" gun on M3 Medium Tank chassis.1 Octagonal fighting compartment.1
- T25 Gun Motor Carriage: 105 mm AA gun in turret on M3 Medium Tank chassis.1
- T25 Medium Tank:
- T26 Howitzer Motor Carriage: 75 mm howitzer on M3 Medium Tank chassis.1 Not built.1
- T26 Medium Tank:
- T26E4 Heavy Tank: Modified M26 Heavy Tank.
- T26E5 Heavy Tank: Modified M26 Heavy Tank.
- T27 Gun Motor Carriage: Forward firing 75 mm gun on Studebaker Swamp Buggy.1
US Ordnance Dept1 - T27 Mortar Carrier: Forward firing 81 mm mortar on turretless M5A1 Light Tank.1
US Ordnance Dept1 - T27E1 Mortar Carrier: 81 mm mortar mounted on top of hull of M5A1 Light Tank.1 Project only.1
- T28 Heavy Tank:
- T28 Multiple Gun Motor Carriage: 37 mm gun and two .50 cal MGs on M2 Halftrack.1 Shield added later.1 Standardized as M15.1
- T28E1 Multiple Gun Motor Carriage: 37 mm gun and two .50 cal MGs on M3 Halftrack.1 Three sided shield.1 Standardized as M15A1.1
- T29 Heavy Tank:
- T29 Howitzer Motor Carriage: 75 mm howitzer on M3 Light Tank chassis.1 Project only.1
- T29 Mortar Carrier: 81 mm mortar on turretless M5A1 Light Tank.1
- T30 Cargo Carrier:
- T30 Chemical Car: 7.2" multiple rocket launcher on turretless M8 Armored Car.1
- T30 Heavy Tank:
- T30 Howitzer Motor Carriage: 75 mm howitzer on M3 Halftrack.1 Shield added later.1
- T31 Cargo Carrier:
- T31 Demolition Tank: 7.2" rocket launder and two flamethrowers in large cast turret on M4 Medium Tank.1 Also designated the T94 Armored Engineer Vehicle.1
- T31 Multiple Gun Motor Carriage: Maxson quad .50 cal MG on M3 Halftrack.1 Project only.1
- T32 Heavy Tank:
- T32 Howitzer Motor Carriage: 105 mm howitzer on M3 Medium Tank chassis.1 Pulpit added later.1 Standardized as M7.1
- T33 Gun Motor Carriage: Forward firing 37 mm gun on Ford Swamp Buggy.1
- T34 Heavy Tank:
- T34 Howitzer Motor Carriage: 105 mm howitzer on Mack T3 Halftrack.1 Project cancelled.1
- T34 Rocket Projector on M4 Medium Tank: 4.6" 60 tube launcher mounted on top of turret.1 Nicknamed "Calliope."1
- T34E1 Rocket Projector on M4A1 Medium Tank: 4.6" 60 tube launcher mounted on top of turret.1
- T34E2 Rocket Projector on M4 Medium Tank: 4.6" 60 tube launcher mounted on top of turret.1 Launching tubes were square.1
- T35 Gun Motor Carriage: 3" gun on M4 Medium Tank chassis.1
- T35 Mortar Carrier: 4.2" mortar on T16 Armored Utility Car.1
- T35E1 Gun Motor Carriage: 3" gun on M4A2 Medium Tank chassis.1 Standardized as M10.1
- T36 Gun Motor Carriage: Bofors AA gun in cast turret on M3 Medium Tank chassis.1
US Ordnance Dept1 - T36 Mortar Carrier: 155 mm mortar on T16 Gun Motor Carriage.1
- T37 Multiple Gun Motor Carriage: Quad .50 cal MG in shield on M3 Halftrack.1
- T37E1 Multiple Gun Motor Carriage: Quad .50 cal MG mounted in parallel on M3 Halftrack.1
- T38 Howitzer Motor Carriage: Short 105 mm howitzer on M3 Halftrack.1
- T38 Mortar Carrier: 4.2" mortar on M37 Motor Carriage.1
- T39 Howitzer Motor Carriage: 105 mm howitzer on T13 Armored Car.1 Project cancelled.1
- T39 Rocket Projector on M4 Tank: 7.2" two tube launcher mounted above turret.1
- T40 Gun Motor Carriage: 3" AA gun on M3 Medium Tank chassis.1 Standardized as M9.1 Similar to T32.1
- T40 Rocket Projector: 7.2" 20 tube rocket launcher on turret.1 Standardized as M17.1
- T40 Rocket Projector (Short Type): Shorter rocket launcher.1
- T41 Howitzer Motor Carriage: 75 mm howitzer on M3 Light Tank chassis.1 Welded armor.1 Project only.1
- T42 Gun Motor Carriage: 37 mm gun on T9 Light Tank chassis.1 Project dropped.1 The project restarted with Bigley light vehicle.1 Project dropped.1
- T43 Gun Motor Carriage: 37 mm gun on Studebaker 6 x 4 chassis.1 Name changed to T21 Armored Car.1
- T44 Gun Motor Carriage: Rear firing 37 mm gun on Ford Swamp Buggy chassis.1 Gun later changed to 57 mm.1 Shield added later.1
- T45 Howitzer Motor Carriage: 105 mm howitzer on Mack track chassis.1 Project only.1
- T45 Rocket Projector on M24 Light Tank: Multiple rocket launcher.1
- T46 Gun Motor Carriage: Rear firing 75 mm on Studebaker Swamp Buggy chassis.1
- T47 Howitzer Motor Carriage: Short 105 mm howitzer on M5A1 Light Tank chassis.1
- T48 Gun Motor Carriage: 57 mm gun with shield on M3 Halftrack.1 Built for British.1
- T49 Gun Motor Carriage: 57 mm gun on fast chassis.1 Prototype for T67.1
- T50 Gun Motor Carriage: 3" gun on chassis.1 No prototype built.1
- T51 Gun Motor Carriage: British 25 pdr. on M3 Medium Tank chassis.1 Similar to Sexton.1
- T52 Multiple Gun Motor Carriage: Bofors and two .50 cal MGs on M4 Medium Tank chassis.1
- T53 Gun Motor Carriage: 90 mm AA gun mounted at the rear of a M4 Medium Tank chassis.1 Different shields tried.1
- T53E1 Gun Motor Carriage: 90 mm AA gun mounted in the center of a M4 Medium Tank chassis.1
US Ordnance Dept1 - T54 Gun Motor Carriage: Bofors gun on M3 Halftrack.1
- T54E1 Gun Motor Carriage: Bofors gun and two .50 cal MGs on M3 Halftrack.1 Shield was circular.1 Outriggers added.1
- T55 Gun Motor Carriage: 3" AA gun mounted on the front of a Allied Machinery Company 8 x 8 truck.1
- T55E1 Gun Motor Carriage: Redesigned T55.1
US Ordnance Dept1 - T56 Gun Motor Carriage: 3" AA gun on M3A3 Light Tank chassis.1 Had gun shield.1 Engine was larger.1
- T57 Gun Motor Carriage: 3" AA gun on M3A3 Light Tank chassis.1 No shield.1 Engine was larger.1
- T58 Multiple Gun Motor Carriage: Quad .50 cal MG on M3 Halftrack.1 Later became M16.1 On M5 Halftrack was called M17.1
- T59 Multiple Gun Motor Carriage: Dual Bofors on M3 Halftrack.1
- T59E1 Gun Motor Carriage: Single Bofors on M3 Halftrack.1
- T59E1 Gun Motor Carriage: Same with outriggers.1
- T60 Multiple Gun Motor Carriage: Bofors and two .50 cal MGs.1 New designation for T54E1.1
- T60E1 Multiple Gun Motor Carriage: Bofors and two .50 cal MGs.1 Different shield than T60.1
- T61 Multiple Gun Motor Carriage: Quad .50 cal MGs on M2 Halftrack.1
- T62 Rocket Motor Carriage: 4.5" rocket projector with shield on armored Dodge 3/4 Ton 4 x 4.1
- T63 Multiple Rocket Projector Carriage: Only design, not built.1 Replaced by T75.1
- T64 Howitzer Motor Carriage: 155 mm howitzer on longer M5 Light Tank chassis.1
- T64 Mortar Carrier: 4.2" mortar on M24 Light Tank chassis.1
- T64E1 Howitzer Motor Carriage: 155 mm howitzer on M24 Light Tank chassis.1 Standardized as M41.1
- T64E1 Mortar Carrier: Modified T64 Mortar Carrier.1 Standardized as M41 Mortar Carrier.1
- T65 Multiple Gun Motor Carriage: Twin Bofors on longer M5A1 Light Tank chassis.1
- T65E1 Multiple Gun Motor Carriage: Twin Bofors on M24 Light Tank chassis.1 Standardized as M19.1
- T65E2 Multiple Gun Motor Carriage: Twin Bofors on M24 Light Tank chassis.1 Standardized as M19A1.1
- T66 Gun Motor Carriage: 75 mm gun on T19E1 Armored Car.1
- T67 Gun Motor Carriage: 75 mm gun on high speed chassis.1
- T68 Multiple Gun Motor Carriage: Twin Bofors (one placed above other) on M3 Halftrack.1
- T69 Multiple Gun Motor Carriage: Quad .50 cal MG on M8 Armored Car chassis.1
- T69 Multiple Gun Motor Carriage: Had improved fire control.1
- T70 Gun Motor Carriage: 76 mm gun on modified T67 chassis.1 Standardized as M18.1
- T71 Gun Motor Carriage: 90 mm gun in larger turret on M10 chassis.1
- T71E1 Gun Motor Carriage: 90 mm gun in larger turret on M10A1 chassis.1 Standardized as M36.1
- T72 Gun Motor Carriage: 76 mm gun on M4 Medium Tank chassis. Initially used open turret but later used M4 turret.1
- T72 Rocket Projector on M4 Tank: 4.6" 60 tube rocket launcher mounted on M4 Medium Tank.1
- T73 Gun Motor Carriage: 75 mm M3 tank gun on M3 Gun Motor Carriage chassis.1
- T73 Rocket Projector on M4 Tank: 4.6" 10 tube rocket launcher mounted on M4 Medium Tank.1 Tubes were square.1
- T74: Not used.1
- T75 Multiple Rocket Motor Carriage: Two 10" and four 4.5" rocket projectors on 1 1/2 Ton 6 x 6.1
- T76 Howitzer Motor Carriage: 105 mm howitzer on modified M24 Light Tank chassis.1 Standardized as M37.1
- T76 Rocket Projector on M4 Tank: 7.5" rocket launcher replacing 75 mm gun in M4A1 Medium Tank.1
- T76E1 Rocket Projector on M4 Tank: 7.5" rocket launcher replacing 75 mm gun in M4A3E8 Medium Tank.1
- T77 Multiple Gun Motor Carriage: Quad .50 cal MGs in welded turret on M24 Light Tank chassis.1
- T77E1 Multiple Gun Motor Carriage: Quad .50 cal MGs in welded turret, with a plastic dome, on a M24 Light Tank chassis.1
- T78 Gun Motor Carriage: 90 mm gun on M24 Light Tank chassis.1 Project only.1
- T79 Gun Motor Carriage: 155 mm gun on light weight chassis using T23 Medium Tank power train.1 Project only.1
- T80 Howitzer Motor Carriage: 8" howitzer on light weight chassis using T23 Medium Tank power train.1 Project only.1
- T81 Mortar Carrier: 4.2" mortar on M5A1 Light Tank chassis.1
- T81 Multiple Gun Motor Carriage: Bofors and two .50 cal MGs on T65E1 chassis.1
- T82 Howitzer Motor Carriage: Short 105 mm howitzer on M5A1 Light Tank chassis.1 A smaller M7.1
- T83 Gun Motor Carriage: Rear mounted 155 mm gun ("Long Tom") on M4A3E8 Medium Tank chassis.1 Standardized as M40.1
- T83 Gun Motor Carriage: Rear mounted 155 mm gun ("Long Tom") on M4A3E8 Medium Tank chassis.1 Standardized as M43.1
- T84 Howitzer Motor Carriage: 8" howitzer on T26E1 Medium Tank chassis.1
- T85 Multiple Gun Motor Carriage: 20 mm Oerlikon quad gun mount at rear of M5 Light Tank chassis.1
- T85E1 Multiple Gun Motor Carriage: New gun mount for T85.1
- T86 Amphibious Gun Motor Carriage: 76 mm gun on altered M18.1 Propelled in water by tracks.1
- T86E1 Amphibious Gun Motor Carriage: 76 mm gun on altered M18.1 Propelled in water by two screws.1
- T86E1 Amphibious Gun Motor Carriage: 76 mm gun on altered M18.1 Propelled in water by one screw.1
- T87 Amphibious Howitzer Motor Carriage: 105 mm howitzer on altered M18.1 Smaller than T86.1
- T88 Howitzer Motor Carriage: 105 mm howitzer on M18.1
- T89 Howitzer Motor Carriage: 8" howitzer on M26 Heavy Tank chassis.1
- T90 Mortar Motor Carriage: 155 mm mortar on M4 Medium Tank chassis.1
- T91: Unknown.1 Classified secret.1
- T92 Howitzer Motor Carriage: 240 mm howitzer mounted in rear of M26 Heavy Tank chassis.1
- T93 Gun Motor Carriage: 8" gun mounted in rear of M26 Heavy Tank chassis.1
- T94 Mortar Motor Carriage: 10" mortar on M40 chassis.1 Mockup only.1
- T95 Gun Motor Carriage: 105 mm assault gun.1 Initially called T28 Heavy Tank.1
US Ordnance Dept1 - T96 Mortar Motor Carriage: 155 mm mortar on M37 chassis.1
- T99 Rocket Projector on M26 Tank: Two 11 tube launchers on sides of the turret.1
- T105 Rocket Projector on M4A1 Medium Tank: Long 7.2" launcher replacing 75 mm gun in M4A1 Medium Tank.1
Sources:
- Profile: AFV Weapons 26: Hellcat, Long Tom and Priest and Complete Check List of all U.S. World War II Self-Propelled Weapons, Colonel Robert J. Icks, 1971
