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| BRITISH EXPLOSIVE ORDNANCE |
| Part 1 - Chapter 2 |
| Fragmentation Bombs |
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F. 20-lb., For No. 17 Mk II Cluster Only (Service) |
| Data |
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Fuzing |
Nose Fuze No. 873 |
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Color markings |
Dark green over-all; ½-in. red band around nose; 1-im. light green band around body |
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Tail No. |
No. 15 Mk I, or No. 16 Mk I parachute attachments |
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Over-all length |
14.5 in. |
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Body length |
11.9 in. |
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Body diameter |
3.9 in. |
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Wall thickness |
0.35 in. |
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Total weight |
20 lb. (approx.) |
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Charge/weight ration |
15% |
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Body Construction: This bomb has a stream-lined, one-piece, cast-steel body, with the nose end open to take an exploder container. The rear end is reduced to form a spi-got for taking the parachute attachment. The spigot is tapped and threaded to receive the securing stud of the parachute attachment. The exploder container is cemented and locked in position. The No. 873 Nose Fuze is locked in position by a multi-tab washer. |
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Tail Construction: No tail is used with this bomb, which is especially designed to be used only in the No. 17 Mk II Cluster. It has a short parachute attachment, secured to the body spigot by a threaded stud. The parachute tray houses an 8-in. diameter fabric parachute with six pairs of rigging lines; each pair terminating in a whipped eye. These eyes pass through holes in the tray and are threaded onto a metal cir-clip, which is se-cured on the underside of the tray. A lid over the parachute in the tray is held in position by the fuze of the bomb behind it. When the cluster open, the air slip displaces the lid, which pulls the chute free of the tray. |
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Suspension: This bomb has no suspension lugs, as it is used in the No. 17 Mk II Clus-ter. |
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Explosive Components |
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Exploder – Two TNT, and two perforated C.E. pellets. |
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Filling – 3.1 lb. (approx.) of TNT. |
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Remarks: The bomb is issued only in clustered form, and, when clustered, the fuze has no safety pin fitted. Hence, care should be exercised in dealing with any individual bombs which might break loose from a cluster in handling. |
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Figure 5 – F. 20-lb. Bomb Mk II (for No. 17 Cluster only) |
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