25mm Gun System Parts

(Page 2) End item NSN parts page 2 of 5
Part Number
NSN
NIIN
10112181 Solid Rivet
012145979
10112311 Solid Rivet
012430790
10112529 Nut And Bolt Retainer
011278901
10114750 Tapping Screw
009591086
10115989 Shear Bolt
011429400
10117532 Antipilferage Seal
010097101
10117628 Angle Bracket
011028508
10119200 Nonmetallic Grommet
010435941
10119306 Turnlock Fastener Stud
011751082
10121244 Plate Self-locking Nut
002794282
10121403 Recessed Washer
004767366
10121867 Hexagon Self-locking Nut
009471380
10121899 Flat Washer
009683150
10122097 Concave Washer
010823884
10122520 Headed Grooved Pin
000090466
10122529 Spring Pin
000507577
10123398 Blind Rivet
000076381
10123577 Pin-rivet Collar
002860660
10123594 Pin-rivet
002883712
10123629 Pin-rivet Collar
002986164
Page: 2

Gun System, 25mm

Picture of 25mm Gun System

The Type 96 25mm Gun (九六式二十五粍高角機銃, Kyūroku-shiki nijyūgo-miri Kōkakukijū?) was an automatic cannon used by the Imperial Japanese Navy during World War II. A local built variant of the French Hotchkiss 25mm anti-aircraft gun, it was primarily used as an anti-aircraft gun in fixed mounts with between one and three guns, but was designed as a dual-purpose weapon for use against armored vehicles as well.

In 1935 the Imperial Japanese Navy decided to replace the earlier 40 mm Vickers "pom-pom" guns with a 25 mm Hotchkiss design. A party of Japanese officers and engineers traveled to France to evaluate the design in 1935 and an order was placed for a number of guns and mounts for evaluation. Firing tests of these guns were conducted at Yokosuka Naval Arsenal in 1935. The first few weapons were built in France under the designation “Type 94” and “Type 95”, with the mass production model produced at the Yokosuka Arsenal being designated “Type 96”.

The Japanese made a number of minor changes to the original Hotchkiss design and production process, changing some components from forgings to castings to simplify production and replacing the simple conical flash suppressor with a Rheinmetall-type design. A submarine-mountable version of the gun was also produced, which made extensive use of stainless steel.

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