120 lb. M86Section II: Incendiary & Chemical Bombs
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

DATA:

   

ARMY-NAVY BOMB

 

AN-M88

M81

220, 260 LB. FRAG

OVERALL LENGTH

43.7 in. 43.7 in.

BODY LENGTH

32.8 in. 32.8 in.

BODY DIAMETER

8 in. 8 in.

WALL THICKNESS

1 in. 1.25 in.

AN-M 88 (220 lb.)

TAIL LENGHT

11 in. 11 in.

M 81 (260 lb.)

TAIL WIDTH

11.5 in. 11.5 in.  

TAIL WEIGHT

4.1 lbs. 4.1 lbs.

(Service)

       
       

WEIGHTS:

 

 

AN-M88 M81

Type of Filling

Comp. B. (TNT surround) Comp. B. (TNT surround)

Weight of Filling

34.1 lbs. 46.89 lbs.

Total Weight

260.0 lbs. 215.7 lbs.

Chg/Wt. Ratio

14.0%

21.6%

FUZING:

Nose :

AN-M103, AN-M103A1, M139, AN-M139A1, M140, AN-M140A1 (All in-stantaneous Setting), M135, M135A1, M136, M136A1, M163, M164, M165, M166, T82, M149, T50E1, T89, T91.

Tail:

AN-M100A2 or AN-M100A1, M161. (A non-delay M14 primer detonator must be used).

BOMB CONSTRUCTION: (AN-M88 and M81)

The AN-M88 differs from the M81 only in that it has a .75 inch steel coil around the body instead of the one inch. Both bombs are constructed in these two ways. In initial production, nose and tail pieces are of cast steel construction and screw onto a central section of seamless steel tubing. A square helical steel spring is wound around the steel tubing. The nose and tail piece are partially out through to afford greater fragmentation (this is similar to the M82 except for the provision for tail ruzes and the M104 auxiliary booster in the larger bombs). The majority of AN-M88's and M81's however, have a one piece steel tubing, and the helical steel spring is wound around the steel tubing, (and the helical steel spring is the tubing) for the entire length of the body.

Suspension is horizontal; two eyebolts are welded to body along longitudinal axis of the bomb, 14 in. apart. A third eyebolt is welded to the body at center of gravity 180° removed from the other eyebolts. The tail is the normal box type, secured to the bomb by a locking ring.

COLOR & MARKINGS:

Olive drab overall. One inch yellow band around the nose and extreme rear of the bomb, and a 1/4 inch band around the center of gravity.

REMARKS:

The initial bombs were filled with TNT; later productions are filled with Composi-tion B with TNT surrounds. All types have the M104 auxiliary booster.

120 lb. M86Section II: Incendiary & Chemical Bombs