METRIC
A-A-52424B
August 3, 2011
SUPERSEDING
A-A-52424A
October 21, 1994
COMMERCIAL ITEM DESCRIPTION
CAPS, RADIATOR: PRESSURE RELIEVING (METRIC)
The General Services Administration has authorized the use of this commercial
item description (CID) for all federal agencies.
1. SCOPE. This CID covers radiator pressure caps with a nominal pressure rating of 48 kPa.
Caps covered by this CID are designed for use with industrial and automotive internal-
combustion engine radiators.
2. CLASSIFICATION. Radiator caps covered by this CID are listed as follows:
Type
Design
Cap size
1
without handle
(64 mm)
2
with handle
(95 mm)
3. SALIENT CHARACTERISTICS
3.1 Materials. The materials used in the radiator cap shall be made of corrosion resistant steel
with exception to the handle, crown, hook and chain which can be made of zinc plated steel per
ASTM B633. The use of recovered material made in compliance with regulatory requirements is
acceptable providing that all requirements of this CID are met (see 4).
3.2 Chain and hook. Radiator cap shall be supplied with chain (see ASTM A466/ A466M class
SF) and hooks. Hook design is optional but shall be easy to hook and remove without damage to
the radiator cap, chain or hook (see figures 1 and 2).
Beneficial comments, recommendations, additions, deletions, clarifications, etc. and any data that
may improve this document should be sent to DAMI_STANDARDIZATION@conus.army.mil or
U.S. Army RDECOM, Tank Automotive Research, Development and Engineering Center,
ATTN: RDTA-EN/STND/TRANS MS #268, 6501 E. 11 Mile Road, Warren, MI 48397-5000.
Since contact information can change, you may want to verify the currency of this address
information using the ASSIST Online database at https://assist.daps.dla.mil.
AMSC N/A
FSC 2930
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