A-A-59313

1. SCOPE. This commercial item description (CID) covers a zinc dust-petrolatum antiseize
thread compound. The thread compound is generally used to prevent seizing during assembly or
disassembly of threaded or unthreaded aluminum and aluminum alloy components engaged with
components fabricated from similar or dissimilar metals. It also provides corrosion protection to
the metal surfaces. The compound is not suitable for use with optical instruments.
 
2. SALIENT CHARACTERISTICS.
 
2.1 Composition. The thread compound shall be a smooth, homogeneous mixture of zinc dust
and petrolatum as specified in table I.
 
2.2 Physical Properties. The thread compound shall conform to the requirements in table II.
 
2.3 Application. Care shall be taken against the application of too heavy a coating of the thread
compound to components. A thin coating is all that is required to prevent seizing. In the case of
blind holes, the application of an excessive amount of the compound may prevent proper seating
of components. Under low temperature conditions, the compound hardens and is difficult to
apply. It should be kept at room temperature for 24 to 48 hours prior to use.