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Unified Inch Screw Threads (UN, UNR, and UNJ Thread Forms) This Standard specifies the thread form, series, class, allowance, tolerance, and designation for unified screw threads. (In order to emphasize that unified screw threads are based on inch modules, they may be
UNJF - Unified Fine Threads. UNJF Thread Series, is suitable for the production of bolts, screws, and nuts for aerospace applications where the Root Radius is controlled. External threads of this series have greater tensile stress area than comparable sizes of the Coarse series.
Unified National Fine (UNF) threads are a specific type of screw thread defined by the Unified Thread Standard (UTS). These threads are designed with a finer pitch compared to their coarse counterparts, offering enhanced grip and tensile strength.
while both UNF and UNJF threads are fine threads within the Unified Thread Standard, UNJF threads are specifically tailored for high-pressure fluid systems where leak-tight connections are critical.
unified-thread-standard-charts Created Date: 9/22/2023 10:07:53 PM ...
The UNJF thread table shows selected thread sizes whose dimensions correspond to the UNF templates. The thread designation in the UNJF thread table is made up of the abbreviation UNJF and the outside diameter in inches.
The Maximum Working Pressure of a Hose Assembly is the lesser rated Working Pressure of the Hose or Tube or End Style (Connector termination). The Maximum Rated Working Pressure of an Adaptor with a combination of Thread / End Styles and sizes, is the Maximum Working Pressure of the least rated end. BSP.
