Page 479 - 4300 Catalog Cover.pdf

4300 Catalog General Technical
U27 Parker Hannifin Corporation
Tube Fittings Division
Columbus, Ohio
http://www.parker.com/tfd
SAE Straight Thread Connector
Use in MS33649
SAE straight thread connectors, such as Parker F5OX, need a
special hex chamfer of 35° to a controlled diameter to function
properly inMS33649 port. In the past, whenMS33649wasmore
popular, Parker fittings were made with this chamfer. However,
this port has been superseded by SAE J1926-1 in industrial
applications for over 50 years.
Since J1926-1 is a superior design, Parker, along with other
manufacturers, discourages the use of MS33649 port in non-
aircraft applications. In fact, a chamfer modification requirement
for MS33649 will not be in the next printing of the SAE J514
specification, again to discourage the use of this port.
If you must use this port, you have to request fittings with this
special chamfer requirement, which makes them special and
more expensive.