AN912 Rev 10
TABLE I. Material and code letters.
Code letter
Material
Blank
Copper alloy
J
Corrosion resistant steel (CRES), type 304
K
CRES, type 316
R
CRES. Type 321
T 1/
Titanium alloy
W
Aluminum alloy 7075-T73
1/ Not for use in oxygen systems.
Part or Identifying Number (PIN): The PIN consists of prefix "AN" the specification sheet number, a
dash number for pipe size, and material code letter. Unassigned PIN's shall not be used.
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W
AN912
Material code letter (see table I)
Size dash number (see figure 1)
Specification sheet number
AN prefix
PIN example: AN912-6W indicates a bushing .500 inch (12.70 mm) pipe threads external and .125
inch (3.18 mm) pipe threads internal, aluminum alloy 7075-T73.
Supersession data:
Due to stress corrosion cracking aluminum alloys 2014 and 2024 "D" designator has been
replaced by aluminum alloy 7075 "W" designator. Example: AN912-8D use AN912-8W.
Metal cracking due to high temperatures CRES alloy 347 "S" designator has been replaced by
CRES alloy 321 "R" designator. Example: AN912-8S use AN912-8R.
Marking: Part shall be permanently marked with the AN PIN, and include the manufacturers CAGE,
name, or trademark.
Table II provides a detailed cross-reference of AN912 PINs and replacement SAE-AS4861 PINs.
Users are cautioned to evaluate replacements for their particular application.
CAUTION: The superseding information is valid as of the date of this specification and may be
superseded by subsequent revisions of the superseding document.
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