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| U.S.N.B.D. - BRITISH BOMBS AND FUZES; PYROTECHNICS; DETONATORS |
| GENERAL PURPOSE BOMBS |
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BRITISH BOMB |
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FUZING |
Nose Pistol No. 29, 34, 38, |
40 LB. G.P. |
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or 45; Nose Fuze No. 873 | |
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COLOR & MARKINGS |
Dark green overall, ½" red | |
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band 1" from nose; 1" light | |
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green band 5½" from nose. |
(Stabilized) |
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TAIL NO. |
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OVERALL LENGTH |
27.25" |
Mks I, II, III |
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BODY LENGTH |
15.90" |
(Service) |
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MAX. BODY DIAMETER |
Mk. I: 5.01" |
Mk. IV |
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II, III: 5.05" |
(Obsolescent) |
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WALL THICKNESS |
0.47" | |
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TAIL LENGTH |
11.4" | |
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TAIL WIDTH |
4.88" | |
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TOTAL WEIGHT |
38.5 lb. (Mk III) |
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CHARGE/WEIGHT RATIO |
17% |
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BODY CONSTRUCTION: |
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Bomb body made of cast steel; the nose end open and threaded internally to receive an exploder container, which is screwed and cemented in position and locked by a set-screw. Rear end of the bomb is closed and reduced in diameter to form a spigot and a boss on the spigot is drilled and tapped to receive the forward threaded end of the tail rod. The exploder container is in the form of a tube, closed at one end, the open and threaded internally to take the pistol. |
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TAIL CONSTRUCTION: |
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Cylindrical strut attached to a tail cone by four fins, secured to body by tail rod ex-tending axially through the tail cone. Forward end of rod screws into central boss on spigot at rear of bomb body, locked by a spring washer and a lock-nut. Rear end of tail cone is fitted with an internally threaded flanged adapter, which screws on the rear threaded end of tail rod, correctly locating tail cone on the bomb body. Tail locked in position by a spring washer and lock-nut screwed against the adapter. |
| SUSPENSION: | Mk I: |
Normally carried 6 in the 250 lb. Small Bomb Container, althrough limited number have single suspension lug. |
| Mk II: |
Normally carried 6 in the 250 lb. Small Bomb Container; may be fitted with suspension lug. |
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| Mk III: |
Has suspension lug, and may be carried 6 in 250 lb. Small Bomb Container or on Light Series bomb carrier. |
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EXPLOSIVE COMPONENTS: |
Detonator: |
(See Appendix I, page 309) |
| Exploder: |
T.N.T. (1 oz. 7 dr.) and C.E. (4 oz. 6 dr.) retained by a waxed felt washer. |
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| Filling: |
Mk I - 6.3 lb. Amatol 80/20. |
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Mk II - 6.5 lb. T.N.T. or 6.7 lb. R.D.X./ T.N.T. 60/40. |
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Mk III - 6.5 lb. Amatol 60/40 or 6.7 lb. of R.D.X./ T.N.T. 60/40. |
| REMARKS: | (1) |
Usually used as a fragmentation bomb, being almost identical to the 20 lb. fragmentation bomb except for size. |
| (2) |
Mk IV: Exploder system changed to use only C.E. pellets, and special retander tail incorporated. |
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