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| U.S.N.B.D. - UNITED STATES - BOMBS AND FUZES; PYROTECHNICS |
| SECTION I - HIGH EXPLOSIVE BOMBS |
| PART IV - U.S. ARMY-NAVY "AN" SERIES BOMBS |
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DATA: |
ARMY - NAVY BOMB |
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250 LB. G.P. |
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OVERALL LENGTH |
45.4 in. | |
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BODY LENGTH |
36.0 in. | |
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BODY DIAMETER |
10.9 in. | |
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WALL THICKNESS |
0.27 in. |
AN-M57 |
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TAIL LENGTH |
12.1 in. |
AN-M57A1 |
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TAIL WIDTH |
14.9 in. | |
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TAIL WEIGHT |
6.0 lb. |
(Service) |
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WEIGHTS: |
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Type of Filling |
50/50 Amatol | T.N.T. | |
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Weight of Filling |
123.7 lbs. | 129.0 lbs. | |
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Total Weight |
255.9 lbs. | 260.0 lb. | |
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Chg/Wt. Ratio |
48.0% |
50.0% |
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FUZING: |
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Regular Missions |
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Nose: |
AN-M103, AN-M103A1, M103, M135, M135A1, M136, M136A1, |
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Tail: |
AN-M100A2, AN-M100A1, M100, M160 |
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Special Missions |
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Tail: |
M112, M112A1, (Masthead bombing from land base only) |
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Nose: |
Shipping plug when above fuzes used in the tail. |
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VT Missions |
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Nose: |
T50E1, T89, T91, M166 (T51E1), T82 |
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Tail: |
AN-M102A2 (to insure detonation in event of VT fuze failure). |
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REMARKS: |
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The AN-M57A1 differs from the AN-M57 in these respects: |
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(a) The AN-M57A1 incorporates two pins fitted into the base plate which extend into the main filling and prevent removal of the base plate. |
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(b) The AN-M57A1 used the M102A1 adapter booster, which has a 3/8" hole, mating with a groove in the internal threads of the base plate. A locking pin, shiped with anti-withdrawal fuzes only, fits through the hole and into the groove and pre-vents extraction of the adapter booster. The pin is held in place by the fuze body. |
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When anti-ricochet action is desired, the M16 anti-ricochet device is installed, consisting of the M7 parachute, M202 fuze adapter, and M151 tail fuze. |
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For construction of Body, Suspension, Color & Markings, Type of Filling, and Tail construction, see Instruction, page 37. |
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