SD Mortar Bomb, SD 1 & SD 1 FRZ
Over-All Length: (SD 1) 6.7 in., (SD 1 FRZ) 6.06 in.
Body Length: (SD 1) 4.25 in., (SD 1 FRZ) 3.75 in.
Body Diameter: (SD 1) 2.0 in., (SD 1 FRZ) 2.0 in.
Wall Thickness:
(SD 1) 0.4 in. nose, 0.2 in. tail
(SD 1 FRZ) 0.12 in.
Tail Length: (SD 1) 1.25 in., (SD 1 FRZ) 1.22 in.
Tail Width: (SD 1) 2.0 in., (SD 1 FRZ) 2.0 in.
Total Weight: (SD 1) 2 lbs., (SD 1 FRZ) 1.1 lb.
 Filling:
(SD 1) Cast TNT
(SD 1 FRZ) Amatol 30/70; Granular TNT
Weight Of Filling: N/A
Charge/Weight Ratio: N/A
Fuzing: (SD 1) - (73), (73) A, (73) A2
(SD 1 FRZ) - (73) B2
CONSTRUCTION: Both bombs have a steel body. The SD 1 tail assembly is of light metal. A tubular frame supports eight light metal fins and a drum. Tail assembly screws into bomb.
The FRZ tail assembly also screws into base of bomb. It is in the form of a cup with three sheet metal pieces spot welded on to it to form six fins. Both steel and aluminum tails were used.
SUSPENSION: SD 1: 392 bombs in AB 500-1 container; 224 bombs in AB 250-2 container; 50 bombs in AB 70-D1 container. Packing is nose to tail with tail cup of each forming a safety device for the fuze behind it.
FRZ bombs are carried in AB 70-D1 container and packed in the same matter as the SD 1 bombs.
COLOR AND MARKINGS: SD 1 yellow; FRZ body is mustard color. Tail (sheet steel) black, (cast aluminum) natural color. Ogive is painted red on Amatol-filled bombs.
Markings on FRZ: NX, A EM-5-38, NX-E-6-37, 109 (Stenciled in black.
AK 1927-12-38 Stamped.
REMARKS: The FRZ is a French bomb used by the Germans.
All information for this entry were acquired from Army Technical manual TM 9-1985-2/Air Force Technical Order TO 39B-1A-9
GERMAN EXPLOSIVE ORDNANCE (Bombs, Fuzes, Rockets, Land Mines, Grenades & Igniters)
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