Early M3: General | |||
Date of first acceptance | March 1941 | Total acceptances | 4526 (total M3) |
Manufacturer | American Car & Foundry Co. | Crew |
|
Early M3: Dimensions | |||
Combat weight | 28,000lbs12,700kg | Height over MG mount | 104'264cm |
Length | 178.4'453.1cm | Gun overhang forward | 0' |
Width | 88.0'224cm | Tread | 73.0'185cm |
Ground clearance | 16.5'41.9cm | Fire height | 76'190cm |
Turret ring diameter | 46.75'118.7cm | Ground pressure, zero penetration | 10.3psi.723kg/cm² |
Early M3: Armament | ||||
Type | Mount | Ammunition | Traverse | Elevation |
37mm Gun M5 | M22 in turret | 103 rounds | 360°; 20° in mount (manual) | +20° to -10° (manual) |
.30cal M1919A4 MG | AA mount M20 behind turret | 8270 rounds | 360° (manual) | Manual |
.30cal M1919A4 MG | Coaxial to 37mm gun | 360°; 20° in mount (manual) | +20° to -10° (manual) | |
.30cal M1919A4 MG | Ball mount in right bow | Manual | Manual | |
.30cal M1919A4 MG | Fixed in each sponson | None | None | |
Stabilizer | ||||
Elevation only |
Early M3: Armor | ||
Assembly | ||
Riveting and welding | ||
Hull | ||
Rolled face-hardened steel | ||
Location | Thickness | Angle from vertical |
Upper front | 1.5'3.8cm | 17° |
Middle front | .625'1.6cm | 69° |
Lower front (cast) | 1.75'4.4cm | 23° |
Sides | 1.0'2.5cm | 0° |
Upper rear | 1.0'2.5cm | 59° |
Middle rear | 1.0'2.5cm | 0° |
Lower rear | 1.0'2.5cm | 20° |
Top | .5'1.3cm | 90° |
Front floor | .5'1.3cm | 90° |
Rear floor | .375'.953cm | 90° |
Turret | ||
Rolled face-hardened steel | ||
Location | Thickness | Angle from vertical |
Gun shield | 1.5'3.8cm | 0° to 14° |
Front | 1.5'3.8cm | 10° |
Sides | 1.0'2.5cm | 0° |
Rear | 1.0'2.5cm | 0° |
Top | .5'1.3cm | 90° |
Early M3: Automotive | |||||
Engine | Continental W-670-9A; 7 cylinder, 4 cycle, radial gasoline | ||||
Horsepower | Net: 250@2400rpmGross: 262@2400rpm | Torque | Net: 584 ft-lb@1800rpmGross: 590 ft-lb@1700rpm | Fuel capacity | 54gal204L |
Transmission | Synchromesh, 5 speeds forward, 1 reverse | ||||
Steering | Controlled differential, steering levers | ||||
Brakes | Mechanical, external contracting |
Early M3: Suspension | ||
Type | Road wheels | Track return rollers |
Vertical volute spring | 2 bogies/track; 2 wheels/bogie | 3/track |
Drive sprockets | Idlers | Shock absorbers |
14-tooth front drive | Trailing adjustable with volute spring at rear of track | None |
Early M3: Track | |||||||
T16E1 | |||||||
Outside guide, double pin, rubber bushed, reversible rubber | |||||||
Width | 11.6'29.5cm | Pitch | 5.5'14cm | Shoes/track | 66 | Ground contact length | 117'297cm |
T16E2 | |||||||
Outside guide, double pin, rubber bushed, non-reversible rubber | |||||||
Width | 11.6'29.5cm | Pitch | 5.5'14cm | Shoes/track | 66 | Ground contact length | 117'297cm |
Early M3: Performance | |||
Max level road speed | 36mph58kph | Max trench | 72'180cm |
Max grade | 60% | Max vertical obstacle | 24'61cm |
Min turning diameter | 42'13m | Max fording depth | 36'91cm |
Cruising range | ~70mi, roads~110km, roads |
Middle M3: General | |||
Date of first acceptance | 1941 | Total acceptances | 4526 (total M3) |
Manufacturer | American Car & Foundry Co. | Crew |
|
Middle M3: Dimensions | |||
Combat weight | 28,000lbs12,700kg | Height over MG mount | 104'264cm |
Length | 178.4'453.1cm | Gun overhang forward | 0' |
Width | 88.0'224cm | Tread | 73.0'185cm |
Ground clearance | 16.5'41.9cm | Fire height | 76'190cm |
Turret ring diameter | 46.75'118.7cm | Ground pressure, zero penetration | 10.3psi.723kg/cm² |
Middle M3: Armament | ||||
Type | Mount | Ammunition | Traverse | Elevation |
37mm Gun M6 | M23 in turret | 103 rounds | 360°; 20° in mount (manual) | +20° to -10° (manual) |
.30cal M1919A4 MG | AA mount M20 behind turret | 8270 rounds | 360° (manual) | Manual |
.30cal M1919A4 MG | Coaxial to 37mm gun | 360°; 20° in mount (manual) | +20° to -10° (manual) | |
.30cal M1919A4 MG | Ball mount in right bow | Manual | Manual | |
.30cal M1919A4 MG | Fixed in each sponson | None | None | |
Stabilizer | ||||
Elevation only |
Middle M3: Armor | ||
Assembly | ||
Riveting and welding | ||
Hull | ||
Rolled face-hardened steel | ||
Location | Thickness | Angle from vertical |
Upper front | 1.5'3.8cm | 17° |
Middle front | .625'1.6cm | 69° |
Lower front (cast) | 1.75'4.4cm | 23° |
Sides | 1.0'2.5cm | 0° |
Upper rear | 1.0'2.5cm | 59° |
Middle rear | 1.0'2.5cm | 0° |
Lower rear | 1.0'2.5cm | 20° |
Top | .5'1.3cm | 90° |
Front floor | .5'1.3cm | 90° |
Rear floor | .375'.953cm | 90° |
Turret | ||
Rolled homogeneous steel | ||
Location | Thickness | Angle from vertical |
Gun shield | 2.0'5.1cm | 0° to 14° |
Front | 1.5'3.8cm | 10° |
Sides | 1.25'3.18cm | 0° |
Rear | 1.25'3.18cm | 0° |
Top | .5'1.3cm | 75° to 90° |
Middle M3: Automotive | |||||
Engine | Continental W-670-9A; 7 cylinder, 4 cycle, radial gasoline | ||||
Horsepower | Net: 250@2400rpmGross: 262@2400rpm | Torque | Net: 584 ft-lb@1800rpmGross: 590 ft-lb@1700rpm | Fuel capacity | 54gal204L |
Transmission | Synchromesh, 5 speeds forward, 1 reverse | ||||
Steering | Controlled differential, steering levers | ||||
Brakes | Mechanical, external contracting |
Middle M3: Suspension | ||
Type | Road wheels | Track return rollers |
Vertical volute spring | 2 bogies/track; 2 wheels/bogie | 3/track |
Drive sprockets | Idlers | Shock absorbers |
14-tooth front drive | Trailing adjustable with volute spring at rear of track | None |
Middle M3: Track | |||||||
T16E1 | |||||||
Outside guide, double pin, rubber bushed, reversible rubber | |||||||
Width | 11.6'29.5cm | Pitch | 5.5'14cm | Shoes/track | 66 | Ground contact length | 117'297cm |
T16E2 | |||||||
Outside guide, double pin, rubber bushed, non-reversible rubber | |||||||
Width | 11.6'29.5cm | Pitch | 5.5'14cm | Shoes/track | 66 | Ground contact length | 117'297cm |
Middle M3: Performance | |||
Max level road speed | 36mph58kph | Max trench | 72'180cm |
Max grade | 60% | Max vertical obstacle | 24'61cm |
Min turning diameter | 42'13m | Max fording depth | 36'91cm |
Cruising range | ~70mi, roads~110km, roads |
M3(diesel): General | |||
Date of first acceptance | June 1941 | Total acceptances | 1285 |
Manufacturer | American Car & Foundry Co. | Crew |
|
M3(diesel): Dimensions | |||
Combat weight | 28,000lbs12,700kg | Height over MG mount | 104'264cm |
Length | 178.4'453.1cm | Gun overhang forward | 0' |
Width | 88.0'224cm | Tread | 73.0'185cm |
Ground clearance | 16.5'41.9cm | Fire height | 76'190cm |
Turret ring diameter | 46.75'118.7cm | Ground pressure, zero penetration | 10.3psi.723kg/cm² |
M3(diesel): Armament | ||||
Type | Mount | Ammunition | Traverse | Elevation |
37mm Gun M6 | M23 in turret | 103 rounds | 360°; 20° in mount (manual) | +20° to -10° (manual) |
.30cal M1919A4 MG | AA mount M20 behind turret | 8270 rounds | 360° (manual) | Manual |
.30cal M1919A4 MG | Coaxial to 37mm gun | 360°; 20° in mount (manual) | +20° to -10° (manual) | |
.30cal M1919A4 MG | Ball mount in right bow | Manual | Manual | |
.30cal M1919A4 MG | Fixed in each sponson | None | None | |
Stabilizer | ||||
Elevation only |
M3(diesel): Armor | ||
Assembly | ||
Riveting and welding | ||
Hull | ||
Rolled face-hardened steel | ||
Location | Thickness | Angle from vertical |
Upper front | 1.5'3.8cm | 17° |
Middle front | .625'1.6cm | 69° |
Lower front (cast) | 1.75'4.4cm | 23° |
Sides | 1.0'2.5cm | 0° |
Upper rear | 1.0'2.5cm | 59° |
Middle rear | 1.0'2.5cm | 0° |
Lower rear | 1.0'2.5cm | 20° |
Top | .5'1.3cm | 90° |
Front floor | .5'1.3cm | 90° |
Rear floor | .375'.953cm | 90° |
Turret | ||
Rolled homogeneous steel | ||
Location | Thickness | Angle from vertical |
Gun shield | 2.0'5.1cm | 0° to 14° |
Front | 1.5'3.8cm | 10° |
Sides | 1.25'3.18cm | 0° |
Rear | 1.25'3.18cm | 0° |
Top | .5'1.3cm | 90° |
M3(diesel): Automotive | |||||
Engine | Guiberson T-1020-4; 9 cylinder, 4 cycle, radial diesel | ||||
Horsepower | Net: 220@2200rpmGross: 245@2200rpm | Torque | Net: 580 ft-lb@1400rpmGross: 645 ft-lb@1300rpm | Fuel capacity | 54gal204L |
Transmission | Synchromesh, 5 speeds forward, 1 reverse | ||||
Steering | Controlled differential, steering levers | ||||
Brakes | Mechanical, external contracting |
M3(diesel): Suspension | ||
Type | Road wheels | Track return rollers |
Vertical volute spring | 2 bogies/track; 2 wheels/bogie | 3/track |
Drive sprockets | Idlers | Shock absorbers |
14-tooth front drive | Trailing adjustable with volute spring at rear of track | None |
M3(diesel): Track | |||||||
T16E1 | |||||||
Outside guide, double pin, rubber bushed, reversible rubber | |||||||
Width | 11.6'29.5cm | Pitch | 5.5'14cm | Shoes/track | 66 | Ground contact length | 117'297cm |
T16E2 | |||||||
Outside guide, double pin, rubber bushed, non-reversible rubber | |||||||
Width | 11.6'29.5cm | Pitch | 5.5'14cm | Shoes/track | 66 | Ground contact length | 117'297cm |
M3(diesel): Performance | |||
Max level road speed | 36mph58kph | Max trench | 72'180cm |
Max grade | 60% | Max vertical obstacle | 24'61cm |
Min turning diameter | 42'13m | Max fording depth | 36'91cm |
Cruising range | ~90mi, roads~145km, roads |
M3A1: General | |||
Date of first acceptance | May 1942 | Total acceptances | 4410 |
Manufacturer | American Car & Foundry Co. | Crew |
|
M3A1: Dimensions | |||
Combat weight | 28,500lbs12,900kg | Height over MG mount | 94'239cm |
Length | 178.4'453.1cm | Gun overhang forward | 0' |
Width | 88.0'224cm | Tread | 73.0'185cm |
Ground clearance | 16.5'41.9cm | Fire height | 76'190cm |
Turret ring diameter | 46.75'118.7cm | Ground pressure, zero penetration | 10.5psi.737kg/cm² |
M3A1: Armament | |||||
Type | Mount | Ammunition | Traverse | Max traverse rate | Elevation |
37mm Gun M6 | M23 in turret | 106 rounds | 360°; (manual and hydraulic) | 24°/sec | +20° to -10° (manual) |
.30cal M1919A4 MG | AA mount M20 behind turret | 7220 rounds | 360° (manual) | -- | Manual |
.30cal M1919A5 MG | Coaxial to 37mm gun | 360°; (manual and hydraulic) | 24°/sec | +20° to -10° (manual) | |
.30cal M1919A4 MG | Ball mount in right bow | Manual | -- | Manual | |
Stabilizer | |||||
Elevation only |
M3A1: Armor | ||
Assembly | ||
Riveting and welding | ||
Hull | ||
Rolled face-hardened steel | ||
Location | Thickness | Angle from vertical |
Upper front | 1.5'3.8cm | 17° |
Middle front | .625'1.6cm | 69° |
Lower front (cast) | 1.75'4.4cm | 23° |
Sides | 1.0'2.5cm | 0° |
Upper rear | 1.0'2.5cm | 59° |
Middle rear | 1.0'2.5cm | 0° |
Lower rear | 1.0'2.5cm | 20° |
Top | .5'1.3cm | 90° |
Front floor | .5'1.3cm | 90° |
Rear floor | .375'.953cm | 90° |
Turret | ||
Rolled homogeneous steel | ||
Location | Thickness | Angle from vertical |
Gun shield | 2.0'5.1cm | 0° to 14° |
Front | 1.5'3.8cm | 10° |
Sides | 1.25'3.18cm | 0° |
Rear | 1.25'3.18cm | 0° |
Top | .5'1.3cm | 90° |
M3A1: Automotive | |||||
Engine | Continental W-670-9A; 7 cylinder, 4 cycle, radial gasoline | ||||
Horsepower | Net: 250@2400rpmGross: 262@2400rpm | Torque | Net: 584 ft-lb@1800rpmGross: 590 ft-lb@1700rpm | Fuel capacity with jettison tanks | 104gal394L |
Transmission | Synchromesh, 5 speeds forward, 1 reverse | ||||
Steering | Controlled differential, steering levers | ||||
Brakes | Mechanical, external contracting |
M3A1: Suspension | ||
Type | Road wheels | Track return rollers |
Vertical volute spring | 2 bogies/track; 2 wheels/bogie | 3/track |
Drive sprockets | Idlers | Shock absorbers |
14-tooth front drive | Trailing adjustable with volute spring at rear of track | None |
M3A1: Track | |||||||
T16E1 | |||||||
Outside guide, double pin, rubber bushed, reversible rubber | |||||||
Width | 11.6'29.5cm | Pitch | 5.5'14cm | Shoes/track | 66 | Ground contact length | 117'297cm |
T16E2 | |||||||
Outside guide, double pin, rubber bushed, non-reversible rubber | |||||||
Width | 11.6'29.5cm | Pitch | 5.5'14cm | Shoes/track | 66 | Ground contact length | 117'297cm |
T36E6 | |||||||
Outside guide, double pin, rubber bushed, steel, parallel grouser | |||||||
Width | 11.6'29.5cm | Pitch | 5.5'14cm | Shoes/track | 66 | Ground contact length | 117'297cm |
T55E1 | |||||||
Outside guide, double pin, rubber bushed, steel chevron | |||||||
Width | 11.6'29.5cm | Pitch | 5.5'14cm | Shoes/track | 66 | Ground contact length | 117'297cm |
M3A1: Performance | |||
Max level road speed | 36mph58kph | Max trench | 72'180cm |
Max grade | 60% | Max vertical obstacle | 24'61cm |
Min turning diameter | 42'13m | Max fording depth | 36'91cm |
Cruising range | ~135mi, roads~217km, roads |
M3A3: General | |||
Date of acceptance | September 1942 | Total acceptances | 3427 + 166 remanufactured or converted |
Manufacturer | American Car & Foundry Co. | Crew |
|
M3A3: Dimensions | |||
Combat weight | 32,400lbs14,700kg | Height over MG mount | 101'257cm |
Length with rear stowage box | 197.9'502.7cm | Gun overhang forward | 0' |
Width over sandshields | 99.4'252cm | Tread | 73.0'185cm |
Ground clearance | 16.5'41.9cm | Fire height | 76'190cm |
Turret ring diameter | 46.75'118.7cm | Ground pressure, zero penetration | 11.9psi.835kg/cm² |
M3A3: Armament | |||||
Type | Mount | Ammunition | Traverse | Max traverse rate | Elevation |
37mm Gun M6 | M44 in turret | 174 rounds | 360°; (manual and hydraulic) | 24°/sec | +20° to -10° (manual) |
.30cal M1919A4 MG | AA mount M20 behind turret | 7500 rounds | 360° (manual) | -- | Manual |
.30cal M1919A5 MG | Coaxial to 37mm gun | 360°; (manual and hydraulic) | 24°/sec | +20° to -10° (manual) | |
.30cal M1919A4 MG | Ball mount in right bow | Manual | -- | Manual | |
Stabilizer | |||||
Elevation only |
M3A3: Armor | ||
Assembly | ||
Welding | ||
Hull | ||
Rolled homogeneous steel | ||
Location | Thickness | Angle from vertical |
Upper front | 1.0'2.5cm | 48° |
Lower front (cast) | 1.75'4.4cm | 23° |
Upper sides | 1.0'2.5cm | 20° |
Lower sides | 1.0'2.5cm | 0° |
Upper rear | 1.0'2.5cm | 59° |
Middle rear | 1.0'2.5cm | 0° |
Lower rear | 1.0'2.5cm | 20° |
Top | .5'1.3cm | 90° |
Front floor | .5'1.3cm | 90° |
Rear floor | .375'.953cm | 90° |
Turret | ||
Rolled homogeneous steel | ||
Location | Thickness | Angle from vertical |
Gun shield | 2.0'5.1cm | 0° to 14° |
Front | 1.5'3.8cm | 10° |
Sides | 1.25'3.18cm | 0° |
Rear | 1.25'3.18cm | 0° |
Top | .5'1.3cm | 90° |
M3A3: Automotive | |||||
Engine | Continental W-670-9A; 7 cylinder, 4 cycle, radial gasoline | ||||
Horsepower | Net: 250@2400rpmGross: 262@2400rpm | Torque | Net: 584 ft-lb@1800rpmGross: 590 ft-lb@1700rpm | Fuel capacity | 110gal416L |
Transmission | Synchromesh, 5 speeds forward, 1 reverse | ||||
Steering | Controlled differential, steering levers | ||||
Brakes | Mechanical, external contracting |
M3A3: Suspension | ||
Type | Road wheels | Track return rollers |
Vertical volute spring | 2 bogies/track; 2 wheels/bogie | 3/track |
Drive sprockets | Idlers | Shock absorbers |
14-tooth front drive | Trailing adjustable with volute spring at rear of track | None |
M3A3: Track | |||||||
T16E1 | |||||||
Outside guide, double pin, rubber bushed, reversible rubber | |||||||
Width | 11.6'29.5cm | Pitch | 5.5'14cm | Shoes/track | 66 | Ground contact length | 117'297cm |
T16E2 | |||||||
Outside guide, double pin, rubber bushed, non-reversible rubber | |||||||
Width | 11.6'29.5cm | Pitch | 5.5'14cm | Shoes/track | 66 | Ground contact length | 117'297cm |
T36E6 | |||||||
Outside guide, double pin, rubber bushed, steel, parallel grouser | |||||||
Width | 11.6'29.5cm | Pitch | 5.5'14cm | Shoes/track | 66 | Ground contact length | 117'297cm |
T55E1 | |||||||
Outside guide, double pin, rubber bushed, steel chevron | |||||||
Width | 11.6'29.5cm | Pitch | 5.5'14cm | Shoes/track | 66 | Ground contact length | 117'297cm |
M3A3: Performance | |||
Max level road speed | 31mph50kph | Max trench | 72'180cm |
Max grade | 60% | Max vertical obstacle | 24'61cm |
Min turning diameter | 42'13m | Max fording depth | 36'91cm |
Cruising range | ~135mi, roads~217km, roads |
402.12 | cubic feet |
694,870 | cubic inches |
14.893 | cubic yards |
11.387 | cubic meters |
11,386,880 | cubic centimeters |
11,387 | liters |
3,008.1 | gallons |
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