AN774 Rev 8
TABLE I. Material and code letters.
Code letter
Material
Steel alloy 4120 or 4130 In accordance with
F
SAE-AMS6370 or SAE-AMS6382 1/
J
CRES, type 304
K
CRES, type 316
R
CRES, type 321
S
CRES, type 347, cond A
T
Titanium alloy 2/
W
Aluminum alloy 7075-T73
1/ Steel alloy 125,000 psi (860 MPa) minimum tensile strength.
2/ Not for use in oxygen systems.
Finishes shall be in accordance with SAE-AS4841.
Part or Identifying Number (PIN): The PIN consists of the letter "AN" the specification sheet number,
a letter designator for material type and a dash number for tube size. Unassigned PIN's shall not be
used.
AN774
W
4
Tube size dash number (see figure 1)
Material code letter (see table I)
Specification sheet number
AN prefix
PIN example: AN774W4 indicates a bolt - flared tube, aluminum alloy 7075-T73, .250 inch (6.35 mm)
tube.
Supersession data:
Due to stress corrosion cracking aluminum alloys 2014 and 2024 "D" designator has been
replaced by aluminum alloy 7075 "W" designator example: AN774-D4 use AN774-W4.
Steel dash (-) designator has been replaced by steel alloy "F" designator.
CRES 347 "S" designator had been replaced by the CRES (alloy 321) "R" designator.
Table II provides a detailed cross-reference of inactive AN774 PINs and replacement SAE-AS5160
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superseded by subsequent revisions of the superseding document.
4
For Parts Inquires call Parts Hangar, Inc (727) 493-0744
© Copyright 2015 Integrated Publishing, Inc.
A Service Disabled Veteran Owned Small Business