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Yor-Lok Fittings for Stainless Steel Tubing
A nut with two sleeves (ferrules) gives these fittings extra gripping power. The sleeves bite into tubing as you tighten the nut, creating a strong seal. Also known as instrumentation fittings, they are made to tight tolerances for use in high-precision applications. They are compatible with Swagelok®, Let-Lok, and A-Lok fittings.
316 stainless steel fittings have excellent corrosion resistance.
For technical drawings and 3-D models, click on a part number.
Through-Wall Straight Adapters, Tube × Male Threaded Pipe
- For Use With: Air, Cutting Oil, Fuel Oil, Gasoline, Hydraulic Fluid, Mineral Oil, Natural Gas, Steam, Water
- Tubing: Use with welded or seamless 304/304L or 316/316L stainless steel that meets ASTM A213, ASTM A249, or ASTM A269
Through-wall fittings are also known as bulkhead couplings and panel-mount couplings; they mount through your wall or panel to create an inlet or outlet.
For Tube | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| OD | Wall Thick. | Pipe Size  | Material | Max. Pressure | Temp. Range, °F | For Hole Dia. | For Max. Wall Thick. | Each | |
NPT Threads | |||||||||
| 1/16" | 0.01" to 0.028" | 1/16 | 316 Stainless Steel | 9,000 psi @ 72° F | -420° to 1200° | 3/16" | 1/8" | 00000000 | 000000 |
| 1/16" | 0.01" to 0.028" | 1/8 | 316 Stainless Steel | 9,000 psi @ 72° F | -420° to 1200° | 3/16" | 1/8" | 00000000 | 00000 |
| 1/8" | 0.035" | 1/8 | 316 Stainless Steel | 6,000 psi @ 72° F | -420° to 1200° | 5/16" | 1/2" | 00000000 | 00000 |
| 1/4" | 0.035" | 1/8 | 316 Stainless Steel | 4,000 psi @ 72° F | -420° to 1200° | 7/16" | 17/32" | 00000000 | 00000 |
| 1/4" | 0.035" | 1/4 | 316 Stainless Steel | 4,000 psi @ 72° F | -420° to 1200° | 7/16" | 17/32" | 00000000 | 00000 |
| 1/4" | 0.035" | 3/8 | 316 Stainless Steel | 4,000 psi @ 72° F | -420° to 1200° | 7/16" | 17/32" | 00000000 | 00000 |
| 1/4" | 0.035" | 1/2 | 316 Stainless Steel | 4,000 psi @ 72° F | -420° to 1200° | 7/16" | 17/32" | 00000000 | 00000 |
| 5/16" | 0.035" to 0.065" | 1/4 | 316 Stainless Steel | 3,000 psi @ 72° F | -420° to 1200° | 1/2" | 9/16" | 0000000 | 000000 |
| 3/8" | 0.035" | 1/4 | 316 Stainless Steel | 2,500 psi @ 72° F | -420° to 1200° | 9/16" | 9/16" | 00000000 | 00000 |
| 3/8" | 0.035" | 3/8 | 316 Stainless Steel | 2,500 psi @ 72° F | -420° to 1200° | 9/16" | 9/16" | 00000000 | 00000 |
| 3/8" | 0.035" | 1/2 | 316 Stainless Steel | 2,500 psi @ 72° F | -420° to 1200° | 9/16" | 9/16" | 00000000 | 00000 |
| 3/8" | 0.035" to 0.065" | 1/8 | 316 Stainless Steel | 2,500 psi @ 72° F | -420° to 1200° | 9/16" | 9/16" | 00000000 | 00000 |
| 1/2" | 0.035" | 3/8 | 316 Stainless Steel | 2,000 psi @ 72° F | -420° to 1200° | 3/4" | 37/64" | 00000000 | 00000 |
| 1/2" | 0.035" | 1/2 | 316 Stainless Steel | 2,000 psi @ 72° F | -420° to 1200° | 3/4" | 19/32" | 00000000 | 00000 |
| 1/2" | 0.035" to 0.083" | 1/4 | 316 Stainless Steel | 2,000 psi @ 72° F | -420° to 1200° | 3/4" | 19/32" | 00000000 | 000000 |
| 1/2" | 0.035" to 0.083" | 3/4 | 316 Stainless Steel | 2,000 psi @ 72° F | -420° to 1200° | 3/4" | 19/32" | 00000000 | 000000 |
| 5/8" | 0.049" to 0.065" | 1/2 | 316 Stainless Steel | 2,000 psi @ 72° F | -420° to 1200° | 7/8" | 19/32" | 00000000 | 000000 |
| 3/4" | 0.049" to 0.109" | 1/2 | 316 Stainless Steel | 2,000 psi @ 72° F | -420° to 1200° | 1 1/16" | 25/32" | 00000000 | 000000 |
| 3/4" | 0.049" to 0.109" | 3/4 | 316 Stainless Steel | 2,000 psi @ 72° F | -420° to 1200° | 1 1/16" | 25/32" | 00000000 | 00000 |
| 1" | 0.065" to 0.12" | 3/4 | 316 Stainless Steel | 1,500 psi @ 72° F | -420° to 1200° | 1 5/16" | 15/16" | 00000000 | 000000 |
| 1" | 0.065" to 0.12" | 1 | 316 Stainless Steel | 1,500 psi @ 72° F | -420° to 1200° | 1 5/16" | 15/16" | 00000000 | 000000 |
Through-Wall Straight Adapters, Tube × Female Threaded Pipe
- For Use With: Air, Cutting Oil, Fuel Oil, Gasoline, Hydraulic Fluid, Mineral Oil, Natural Gas, Steam, Water
- Tubing: Use with welded or seamless 304/304L or 316/316L stainless steel that meets ASTM A213, ASTM A249, or ASTM A269
Through-wall fittings are also known as bulkhead couplings and panel-mount couplings; they mount through your wall or panel to create an inlet or outlet.
For Tube | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| OD | Wall Thick. | Pipe Size | Material | Max. Pressure | Temp. Range, °F | For Hole Dia. | For Max. Wall Thick. | Each | |
NPT Threads | |||||||||
| 1/8" | 0.028" to 0.035" | 1/8 | 316 Stainless Steel | 6,000 psi @ 72° F | -420° to 1200° | 5/16" | 1/2" | 00000000 | 000000 |
| 1/4" | 0.028" to 0.065" | 1/8 | 316 Stainless Steel | 4,000 psi @ 72° F | -420° to 1200° | 7/16" | 17/32" | 00000000 | 00000 |
| 1/4" | 0.028" to 0.065" | 1/4 | 316 Stainless Steel | 4,000 psi @ 72° F | -420° to 1200° | 7/16" | 17/32" | 00000000 | 00000 |
| 3/8" | 0.035" to 0.065" | 1/4 | 316 Stainless Steel | 2,500 psi @ 72° F | -420° to 1200° | 9/16" | 9/16" | 00000000 | 00000 |
| 1/2" | 0.035" to 0.083" | 3/8 | 316 Stainless Steel | 2,000 psi @ 72° F | -420° to 1200° | 3/4" | 19/32" | 00000000 | 00000 |
| 1/2" | 0.035" to 0.083" | 1/2 | 316 Stainless Steel | 2,000 psi @ 72° F | -420° to 1200° | 3/4" | 19/32" | 00000000 | 00000 |
| 3/4" | 0.049" to 0.109" | 3/4 | 316 Stainless Steel | 2,000 psi @ 72° F | -420° to 1200° | 1 1/16" | 25/32" | 00000000 | 000000 |
Through-Wall Straight Connectors, Tube
- For Use With: Air, Cutting Oil, Fuel Oil, Gasoline, Hydraulic Fluid, Mineral Oil, Natural Gas, Steam, Water
- Tubing: Use with welded or seamless 304/304L or 316/316L stainless steel that meets ASTM A213, ASTM A249, or ASTM A269
Through-wall fittings are also known as bulkhead couplings and panel-mount couplings; they mount through your wall or panel to create an inlet or outlet.
For Tube | ||||||||
|---|---|---|---|---|---|---|---|---|
| OD | Wall Thick. | Material | Max. Pressure | Temp. Range, °F | For Hole Dia. | For Max. Wall Thick. | Each | |
| 4mm | 1mm | 316 Stainless Steel | 9,500 psi @ 72° F | -420° to 1200° | 9.9mm | 12.7mm | 00000000 | 000000 |
| 6mm | 1 to 1.5 mm | 316 Stainless Steel | 6,000 psi @ 72° F | -420° to 1200° | 11.5mm | 10.2mm | 00000000 | 00000 |
| 8mm | 1 to 1.5 mm | 316 Stainless Steel | 4,400 psi @ 72° F | -420° to 1200° | 13.1mm | 11.2mm | 00000000 | 00000 |
| 10mm | 1 to 1.5 mm | 316 Stainless Steel | 3,400 psi @ 72° F | -420° to 1200° | 16.3mm | 11.2mm | 0000000 | 00000 |
Through-Wall Straight Reducers, Metric Tube — Inch Tube
- For Use With: Air, Cutting Oil, Fuel Oil, Gasoline, Hydraulic Fluid, Mineral Oil, Natural Gas, Steam, Water
- Tubing: Use with welded or seamless 304/304L or 316/316L stainless steel that meets ASTM A213, ASTM A249, or ASTM A269
Through-wall fittings are also known as bulkhead couplings and panel-mount couplings; they mount through your wall or panel to create an inlet or outlet.
Nuts
For Tube | ||||||
|---|---|---|---|---|---|---|
| OD | Wall Thick. | Nut Material | Max. Pressure | Temp. Range, °F | Each | |
| 1/16" | 0.02" | 316 Stainless Steel | 9,000 psi @ 72° F | -420° to 1200° | 00000000 | 00000 |
| 1/8" | 0.035" | 316 Stainless Steel | 6,000 psi @ 72° F | -420° to 1200° | 00000000 | 0000 |
| 1/4" | 0.035" | 316 Stainless Steel | 4,000 psi @ 72° F | -420° to 1200° | 00000000 | 0000 |
| 5/16" | 0.035" | 316 Stainless Steel | 3,000 psi @ 72° F | -420° to 1200° | 00000000 | 0000 |
| 3/8" | 0.035" | 316 Stainless Steel | 2,500 psi @ 72° F | -420° to 1200° | 00000000 | 0000 |
| 1/2" | 0.035" | 316 Stainless Steel | 2,000 psi @ 72° F | -420° to 1200° | 00000000 | 00000 |
| 5/8" | 0.049" | 316 Stainless Steel | 2,000 psi @ 72° F | -420° to 1200° | 00000000 | 00000 |
| 3/4" | 0.049" | 316 Stainless Steel | 2,000 psi @ 72° F | -420° to 1200° | 00000000 | 00000 |
| 1" | 0.065" | 316 Stainless Steel | 1,500 psi @ 72° F | -420° to 1200° | 00000000 | 00000 |
| 4mm | 1mm | 316 Stainless Steel | 3,500 psi @ 72° F | -420° to 1200° | 00000000 | 0000 |
| 6mm | 1mm | 316 Stainless Steel | 4,000 psi @ 72° F | -420° to 1200° | 00000000 | 0000 |
| 8mm | 1mm | 316 Stainless Steel | 3,000 psi @ 72° F | -420° to 1200° | 00000000 | 0000 |
| 10mm | 0.5mm | 316 Stainless Steel | 2,500 psi @ 72° F | -420° to 1200° | 00000000 | 0000 |
| 12mm | 0.5mm | 316 Stainless Steel | 2,000 psi @ 72° F | -420° to 1200° | 00000000 | 0000 |
Front and Back Sleeves
For Tube | ||||||
|---|---|---|---|---|---|---|
| OD | Wall Thick. | Sleeve Material | Max. Pressure | Temp. Range, °F | Each | |
| 1/16" | 0.02" | 316 Stainless Steel | 9,000 psi @ 72° F | -420° to 1200° | 00000000 | 00000 |
| 1/8" | 0.035" | 316 Stainless Steel | 6,000 psi @ 72° F | -420° to 1200° | 00000000 | 0000 |
| 1/4" | 0.035" | 316 Stainless Steel | 4,000 psi @ 72° F | -420° to 1200° | 00000000 | 0000 |
| 3/8" | 0.035" | 316 Stainless Steel | 2,500 psi @ 72° F | -420° to 1200° | 00000000 | 0000 |
| 1/2" | 0.035" | 316 Stainless Steel | 2,000 psi @ 72° F | -420° to 1200° | 00000000 | 0000 |
| 5/8" | 0.049" | 316 Stainless Steel | 2,000 psi @ 72° F | -420° to 1200° | 00000000 | 0000 |
| 3/4" | 0.049" | 316 Stainless Steel | 2,000 psi @ 72° F | -420° to 1200° | 00000000 | 0000 |
| 1" | 0.065" | 316 Stainless Steel | 1,500 psi @ 72° F | -420° to 1200° | 00000000 | 00000 |
| 4mm | 1mm | 316 Stainless Steel | 3,500 psi @ 72° F | -420° to 1200° | 00000000 | 0000 |
| 6mm | 1mm | 316 Stainless Steel | 4,000 psi @ 72° F | -420° to 1200° | 00000000 | 0000 |
| 8mm | 1mm | 316 Stainless Steel | 3,000 psi @ 72° F | -420° to 1200° | 00000000 | 0000 |
| 10mm | 0.5mm | 316 Stainless Steel | 2,500 psi @ 72° F | -420° to 1200° | 00000000 | 0000 |
| 12mm | 0.5mm | 316 Stainless Steel | 2,000 psi @ 72° F | -420° to 1200° | 00000000 | 0000 |
PTFE Sleeves
PTFE sleeves are plastic instead of stainless steel, so they won’t damage tubing.
| For Tube OD | Sleeve Material | Max. Pressure | Temp. Range, °F | Each | |
| 1/16" | PTFE Plastic | Not Rated | -65° to 350° | 00000000 | 000000 |
| 1/8" | PTFE Plastic | Not Rated | -65° to 350° | 00000000 | 0000 |
| 1/4" | PTFE Plastic | Not Rated | -65° to 350° | 00000000 | 0000 |
| 5/16" | PTFE Plastic | Not Rated | -65° to 350° | 00000000 | 0000 |
| 3/8" | PTFE Plastic | Not Rated | -65° to 350° | 00000000 | 0000 |
| 1/2" | PTFE Plastic | Not Rated | -65° to 350° | 00000000 | 0000 |
| 5/8" | PTFE Plastic | Not Rated | -65° to 350° | 00000000 | 00000 |
| 3/4" | PTFE Plastic | Not Rated | -65° to 350° | 00000000 | 00000 |
| 1" | PTFE Plastic | Not Rated | -65° to 350° | 00000000 | 00000 |
Tube Supports
Tube supports are recommended for soft plastic tubing to prevent the tube from collapsing.
For Tube | |||||
|---|---|---|---|---|---|
| OD | ID | Tube Support Material | Temp. Range, °F | Each | |
| 1/4" | 1/8" | 316 Stainless Steel | -420° to 1200° | 00000000 | 00000 |
| 1/4" | 0.17" | 316 Stainless Steel | -420° to 1200° | 00000000 | 0000 |
| 1/4" | 0.188" | 316 Stainless Steel | -420° to 1200° | 00000000 | 0000 |
| 3/8" | 0.188" | 316 Stainless Steel | -420° to 1200° | 00000000 | 0000 |
| 3/8" | 1/4" | 316 Stainless Steel | -420° to 1200° | 00000000 | 0000 |
| 1/2" | 1/4" | 316 Stainless Steel | -420° to 1200° | 00000000 | 0000 |
| 1/2" | 3/8" | 316 Stainless Steel | -420° to 1200° | 00000000 | 0000 |
| 3/4" | 1/2" | 316 Stainless Steel | -420° to 1200° | 00000000 | 00000 |