Stainless Steel fittings
Traditional fittings for HPLC and UHPLC systems
The IDEX 316 Stainless Steel fittings are typically used in traditional HPLC and UHPLC analytical systems. They are pressure rated to 20,000 psi (1,380 bar) when wrench tightened and comes in several designs. The IDEX standard construction is available for 10-32, 1/4-28, or M6x1 coned port designs. The Common Valve fittings type is for traditional Rheodyne brand valves with 10-32 and 5/16-24 coned ports for 1/16” or 1/8” OD tubing, respectively. We also supply other manufacturer-compatible fitting for connecting 1/16” OD tubing to 10-32 ports.
Note that metal fittings should not be used in plastic ports, as this can damage the port. The recommended torque to tighten these fittings is 20 in-lbs (2.25 N·m).

Product details
Standard IDEX stainless-steel fittings

Common valve stainless-steel fittings

Vici Valco compatible stainless-steel fittings

| Part No.* | Description | Port | Pressure Rating | Head Style | Material |
|---|---|---|---|---|---|
| C-235 | Standard Nut for 1/8” OD Tubing | 1/4-28 Coned | 20,000 psi (1,380 bar) | 5/16” Hex | SST |
| C-236 | Standard Ferrule for 1/8” OD Tubing | 1/4-28 Coned | 20,000 psi (1,380 bar) | - | SST |
| U-400 | Standard Nut for 1/16” OD Tubing | 10-32 Coned | 20,000 psi (1,380 bar) | 5/16” Hex | SST |
| U-401 | Standard Ferrule for 1/16” OD Tubing | 10-32 or M6x1 Coned | 20,000 psi (1,380 bar) | - | SST |
| U-450 | Standard Nut for 1/16” OD Tubing | M6x1 Coned | 20,000 psi (1,380 bar) | 5/16” Hex | SST |
| 6000-082 | Common Valve Fitting for 1/8” OD Tubing | 5/16-24 Coned | 20,000 psi (1,380 bar) | 5/16” Hex | SST |
| 6000-210 | Common Valve Ferrule for 1/16” OD Tubing | 10-32 Coned | 20,000 psi (1,380 bar) | - | SST |
| 6000-211 | Common Valve Fitting for 1/16” OD Tubing, Long | 10-32 Coned | 20,000 psi (1,380 bar) | 1/4” Hex | SST |
| 6000-262 | Common Valve Fitting for 1/16” OD Tubing, Extra Long | 10-32 Coned | 20,000 psi (1,380 bar) | 1/4” Hex | SST |
| U-320 | Nuts for 1/16” OD Tubing, Valco/VICI Compatible | 10-32 Coned | 20,000 psi (1,380 bar) | 1/4” Hex | SST |
| U-321 | Ferrule for 1/16” OD Tubing, Valco/VICI Compatible | 10-32 Coned | 20,000 psi (1,380 bar) | - | SST |
| U-410 | Nuts for 1/16” OD Tubing, Waters Compatible | 10-32 Coned | 20,000 psi (1,380 bar) | 5/16” Hex | SST |
Resources
Consult the Periodic Table of Analytical Fittings for a quick overview, the Fittings 101 for guidance and learning, and the IDEX Catalogue for product details, or contact Biotech Fluidics for expert advice.



