UNITED24 - Make a charitable donation in support of Ukraine!


Cartridge, 105mm, M548, HERA

Army 105mm howitzer cartridges are semi-fixed and fired from rifled howitzers. A complete service round consists of a projectile, fuze, cartridge case with primer and propelling charge. Cartridges are issued fuzed or unfuzed.

High Explosive Rocket Assisted (HERA), M548 rocket motor spike may be contaminated with a yellow crystalline substance composed of 2-Nitrodiphenylamine. Double base cast propellants used in rocket motor also have a history of exuding a NG plasticizer that tests have proven to be quite insensitive. Both may give appearance of corrosion but presence of either substance is not a defect. Annotate occurrence on Depot Surveillance Record Cards for information purposes.

Projectiles with damaged threads that pass gaging are not defective. A concentricity gage (deep cavity) is not available for M548 HERA cartridges. Utilize an inert M514A1 proximity fuze to assure acceptable concentricity and depth of fuze well.

Join the GlobalSecurity.org mailing list

Page last modified: 07-07-2011 02:52:05 ZULU