MIL-DTL-197L
5. PACKAGING. Not applicable.
6. NOTES
(This section contains information of a general or explanatory nature that may be helpful, but is
not mandatory.)
6.1 Intended use. This specification is intended for use as a reference in section 5 of
bearing commodity specifications and for direct reference in acquisition documents. It is intended
to furnish direction in the packaging of bearings at military and other government activities and at
plants of commercial subcontractors. The packaging requirements specified herein are intended to
ensure proper and safe transportation, storage, and stowage of bearings for shipment to
government activities.
6.2 Acquisition requirements. Acquisition documents should specify the following:
a.
Title, number, and date of this specification.
Exceptions to packaging, if required (see 3.2.1).
b.
c.
Preservation, if different than general preservation procedure (see 3.3.2).
d.
e.
Lubricant or preservative compound (see 3.3.4.7).
f.
Operational lubricant (grease or oil), if required (see 3.3.4.7).
g.
h.
Bulk pack quantity, if required (see 3.10.2).
i.
Vacuum-sealing for rigid metal containers, if required (see 3.10.9).
j.
Type II or III desiccant, if required (see 3.10.14.1).
k.
Unit packs, if different than intermediate (see 3.11.3).
l.
Bar coding, if different (see 3.12.3).
m.
n.
Special markings, if required (see 3.12.5).
Bearing nomenclature (see 3.12.12).
o.
AQL (see 4.2.1.1).
p.
Direct inspection requirements, if required (see 4.2.2).
q.
Level of packing (see 4.2.7).
r.
6.3 Cleanliness.
6.3.1 Cleaning the exterior of the bearing package before opening. This note is directed
particularly toward instrument precision ball bearings, although it can apply generally to all types.
After the bearings have been properly packaged under clean room conditions, the exterior of the
package may become dirty. Containers and packages frequently generate small amounts of static
electricity that attract dirt and dust particles, and contamination adheres to the package.
Particularly for instrument precision ball bearings, control should be established to clean the
exterior parts of the package before entry into the processing area. A recommended method is to
have the package blasted with absolutely clean dry air or remove static electricity charge with an
appropriate solvent. Once entering the processing area and placed in a laminar flow hood, the
package should be washed again with the appropriate solvent for approximately 5 to 10 seconds to
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