USNBD, British Bombs and Fuzes, Pyrotechnics, Detonators; Section I - British Bombs and Pyrotechnics; General Purpose Bombs: 250 lb. G.P. (Mk I bis III)

U.S.N.B.D. - BRITISH BOMBS AND FUZES; PYROTECHNICS; DETONATORS

GENERAL PURPOSE BOMBS


		BRITISH BOMB
FUZING	Nose Pistol No. 19	250 LB. G.P.
	Tail Pistol No. 22
	Tail Pistol No. 17
COLOR & MARKINGS	Yellow overall with ½" red
	band around nose, 1" light	Mks I, II, & III
	green band around body;
	longitudinal green bar on	(Service)
	body and tail indicates
	explodering scheme.
TAIL NO.	No. 1 Mk I (Mk III only)
OVERALL LENGTH	54.2 in.
BODY LENGTH	28 in.
MAX. BODY DIAMETER	10.3 in.
WALL THICKNESS	0.6 in.
TAIL WIDTH	10.2 in.
TOTAL WEIGHT	247 lbs. (TNT)
CHARGE/WEIGHT RATIO	27%

BODY CONSTRUCTION:

Streamlined steel casting or forging threaded at the nose to take a nose adapter which holds the central exploder tube; at the other end of the casting is a threaded base plug through which the exploder tube passes. Welded to the end of the casting is a streamlined section of thin metal, containing no explosive, but which is tapered to take the tail ring. The exploder passes through this section also.

TAIL CONSTRUCTION:

Truncated cone which fits over rear section of body and is held to it by a lock nut over the exploder tube. Four mild steel fins are fastened to the cone and are reinforced by a cylindrical strut.

SUSPENSION:

Single suspension lug secured to the body by four screws.

EXPLOSIVE COMPONENTS:	Detonators:	(See Appendix I, page 309)
	Exploders:	T.N.T. and C.E. pellet.
	Filling:	68 lbs. T.N.T. or 63 lb. Amatol 80/20.

REMARKS:	1.	Tail fins are usually painted red when time pistol is used.
	2.	This bomb, previously declared "Obsolete", has recently been returned to service use by the R.A.F.