METALOK INDUSTRIES

HEX NIPPLE - UF (REF. 6403)

HEX NIPPLE - UF (REF. 6403)

The Hex Nipple – UF (Ref. 6403) is a high-precision threaded fitting designed to connect two components with Unified Fine (UF) male threads in a straight-line configuration. Featuring a centrally located hexagonal body, it allows for secure tightening using standard wrenches, ensuring a robust and leak-tight connection in high-performance systems. This fitting is commonly used in hydraulic, pneumatic, instrumentation, and OEM applications where UF threads are required for fine-tolerance assembly. Available in sizes ranging from 1/8” to 2” (or 3mm to 50mm), the Hex Nipple – UF is machined from premium-grade materials such as Stainless Steel, Brass, Duplex, Monel, and Hastelloy. Its fine-threaded ends provide enhanced sealing and vibration resistance, making it ideal for precision systems in aerospace, defense, medical, and industrial applications.

  • Reference Code: 6403
  • Connection Type: UF (Unified Fine Thread) male x male
  • Thread Standard: UNF – ANSI/ASME B1.1 (Unified Fine)
  • Hex Body: Provides easy installation with standard wrench tools
  • Size Range: 1/8” to 2” / 3mm to 50mm
  • Material Options: Stainless Steel, Brass, Duplex, Monel, Hastelloy
  • High-Precision Threads: Ensure tight fit and reliable sealing
  • Compliant with global thread and pressure fitting standards
  • Provides secure connection between two UF-threaded components
  • Hex design ensures fast and easy assembly
  • Fine threads offer better seal integrity and vibration resistance
  • Suitable for tight-tolerance and high-performance applications
  • Resistant to corrosion, pressure, and temperature extremes
  • Ideal for instrumentation panels, aerospace assemblies, and OEM systems
Part NumberTT
(UNF/UN-2A)
TxTx
(UNF/UN-2A)
L
(mm)
∅ D
(mm)
H
(Inch)
PHN-6UF-4UF3/8″9/16″-181/4″7/16″-2028.27.511/16
PHN-6UF-6UF3/8″9/16″-183/8″9/16″-1828.77.511/16
PHN-8UF-8UF1/2″3/4″-161/2″3/4″-1632.09.97/8
PHN-10UF-8UF5/8″7/8″-141/2″3/4″-1635.012.31
PHN-10UF-10UF5/8″7/8″-145/8″7/8″-1436.612.31
PHN-12UF-8UF3/4″1.1/16″-121/2″3/4″-1639.515.51.1/4
PHN-12UF-12UF3/4″1.1/16″-123/4″1.1/16″-1242.715.51.1/4
PHN-16UF-12UF1″1.5/16″-123/4″1.1/16″-1243.721.41.1/2

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