Tubing Connector Nuts, low pressure, two pieces, 1/8 inch, PEEK, Natural, large head, short length and 1/4-28 screw threads. Use with flange free fittings and ferrule. Finger tighten, ARE-Applied Research brand. 5/PK.
Additional Info:
The 58819‑01‑005 Two‑Piece PEEK Tubing Connector Nuts (5/Pack) are low-pressure flangeless fittings designed for connecting 1/8 inch OD polymeric tubing in HPLC systems and other fluid handling applications. Featuring a two-piece construction, these fittings provide improved alignment, grip, and repeatability compared to standard one-piece connector nuts.
Designed with a large head for easier handling and a short overall length, these fittings are ideal for tight or space-restricted instrument configurations. The finger-tight design allows fast, tool-free installation while maintaining reliable sealing performance when used with compatible ferrules.
Manufactured from natural (unpigmented) PEEK, these fittings offer excellent chemical resistance, high mechanical strength, and minimal extractables, making them suitable for demanding analytical applications.
✅ Key Benefits
Two‑Piece Connector Design Enhances alignment, sealing consistency, and repeatability
Large Head for Improved Grip Allows easier finger-tight installation
Short Length Profile Ideal for confined spaces and compact system layouts
Flangeless Connection Design Eliminates need for tubing flanging
Finger-Tight Operation Enables fast, tool-free connections
Natural PEEK Construction High chemical resistance with low extractables
Optimized for 1/8" Tubing Systems Suitable for higher flow, low-pressure applications
5/Pack Configuration Ideal for targeted replacement and small-scale use
Performance & Design
Material: Natural PEEK (Polyether Ether Ketone)
Excellent chemical resistance
High mechanical strength
Broad solvent compatibility
Free of added pigments
Design Features:
Two-piece construction
Large head for enhanced handling
Short length geometry for tight installations
Connection Type:
1/4‑28 UNF threaded nut
Designed for flangeless tubing systems
Engineered for:
Improved ergonomics and repeatability
Reliable low-pressure sealing
Use in constrained system layouts
System Role & Integration
Connects 1/8" OD polymeric tubing to system ports
Requires separate ferrules for proper sealing
Used in:
Low-pressure HPLC systems
Tight instrument configurations
Applications requiring enhanced handling and consistency
⚠️ Usage Notes
Tubing must NOT be flanged (flangeless only)
Ferrules are required for proper sealing
Compatible with 1/4‑28 UNF ports
Designed for low-pressure applications only
Pressure Limit: ~500 psi (34.5 bar)
Specifications
Product Type: Tubing Connector Nuts (Two‑Piece)
Material: PEEK (Natural)
Color: Natural (Unpigmented)
Tubing Size: 1/8 inch OD
Thread Type: 1/4‑28 UNF
Connection Type: Flangeless
Design: Large head, short length
Pressure Limit: ~500 psi (34.5 bar)
System Type: Low pressure
Pack Size: 5 per pack
Brand: ARE‑Applied Research™
Resources & Ordering Options