AVIATIONEU NEW ERA...
SAE-AS1034/MS24401/AN821 90° series elbow 90°, flared tube fittings are available as part of our own labelled (AVIATIONEU NEW ERA) product lines in different materials, tube outer diameters and thread sizes in inches. AN821 and MS24401 series elbow fittings are superseded by the respective elbows of SAE International, standard AS1034 series. These fittings are made from different materials including Carbon Steel, Aluminum Alloy, Corrosion Resistant Steel (CRES), and Titanium Alloy. The 2 digits after the series code indicate the tubing outer diameter (O.D.) in inches. The following Material Code Letters in the part numbers indicate the composition of the fitting. Finish code “V” in the PN indicates high purity Aluminum coating for “W” or “D” fittings.
No code letter in part number for Carbon Steel
“D” for Aluminum Alloy (except 7075-T73)
“J” for CRES, type 304
“K” for CRES, type 316
“R” for CRES, type 321
“S” for CRES, type 347
“T” for Titanium Alloy 6AL-4V
“W” for Aluminum Alloy 7075-T73
For example, a 90° elbow fitting with a flared tube 3/8 in. size connection corresponds to PN AS1034D0606 when made from Aluminum Alloy or AS1034W0606 when made from 7075-T73 Aluminum Alloy replacing respective AN821-6D 90° elbow fitting from Anodized Aluminum Alloy with a 37 deg flared tube 3/8 in. connection, and a UNJF / Class 3A thread of 9/16-18 in. size. AN821 fittings of tube outer diameters 3/4 in. (size 12) and above come with UNJ / Class 3A threads.
Depending on their Part Number they are sold in pieces but also in packs a with specified number of fittings indicated after the letters "PK" in the product reference number (SKU).
Note: In SAE AS standards for new designs, aluminum fittings with material code letter D in their Part or Identifying Number (PIN) are replaced by those with material code letter W for Aluminum Alloy 7075-T73 providing a higher tensile strength. In addition CRES fittings with material code letter S can be used for replacement parts. For new designs use of CRES fittings with material code letter R is recommended for applications requiring higher temperature.