Establishments primarily engaged in manufacturing ordnance and accessories, not elsewhere classified, such as naval, aircraft, antiaircraft, tank, coast, and field artillery having a bore more than 30 mm. (or more than 1.18 inch), and components. Establishments primarily engaged in manufacturing small arms and parts 30 mm. (or 1.18 inch) or less are classified in Industry 3484; those manufacturing tanks are classified in Industry 3795; and those manufacturing guided missiles are classified in Industry Group 376.

• Antisubmarine projectors (ordnance)
• Antitank rocket launchers
• Artillery parts for artillery more than 30 mm. (or more than 1.18
• Artillery, more than 30 mm. (or more than 1.18 inch): aircraft,
• Barrels, gun: more than 30 mm. (or more than 1.18 inch)
• Bofors guns
• Cannons, more than 30 mm. (or more than 1.18 inch)
• Carriages, gun: for artillery more than 30 mm. (or more than 1.18
• Catapult guns
• Depth charge release pistols and projectors
• Flame throwers (ordnance)
• Gun turrets and parts for artillery more than 30 mm. (or more than
• Guns, more than 30 mm. (or more than 1.18 inch)
• Howitzers, more than 30 mm. (or more than 1.18 inch)
• Limbers, gun and caisson
• Links for ammunition more than 30 mm. (or more than 1.18 inch)
• Livens projectors (ordnance)
• Machine guns, more than 30 mm. (or more than 1.18 inch)
• Mortars, more than 30 mm. (or more than 1.18 inch)
• Oerlikon guns
• Projectors antisub, depth charge release, grenade, livens, and rocket
• Recoil mechanisms for guns more than 30 mm. (or more than 1.18
• Rifles, recoilless
• Rocket launchers, hand-held
• Smoke generators (ordnance)
• Tampions for guns more than 30 mm. (or more than 1.18 inch)
• Torpedo tubes (ordnance)