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How to Identify and Measure Fittings
Pipe size is an industry designation, not the actual size. View information about how to measure threaded and unthreaded pipe and pipe fittings.
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Yor-Lok Fittings for Steel Tubing
- For Use With: Air, Cutting Oil, Diesel Fuel, Fuel Oil, Gasoline, Hydraulic Fluid, Mineral Oil
- Tubing: Use with seamless steel
- Specifications Met: See table
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. Fittings are zinc-plated steel for fair corrosion resistance. They are compatible with Swagelok®, Let-Lok, and A-Lok fittings.
90° Elbow Adapters, Tube × Male Threaded Pipe
For Tube | ||||||||
|---|---|---|---|---|---|---|---|---|
| OD | Wall Thick. | Pipe Size  | Material | Max. Pressure | Temp. Range, °F | Specifications Met | Each | |
NPT Threads | ||||||||
| 1/8" | 0.035" | 1/8 | Zinc-Plated Steel | 6,800 psi @ 72° F | -20° to 395° | ASME B1.20.1, ASME B31.1, ASME B31.3, ASTM A179 | 0000000 | 000000 |
| 1/8" | 0.035" | 1/4 | Zinc-Plated Steel | 6,500 psi @ 72° F | -20° to 395° | ASTM A179 | 0000000 | 00000 |
| 3/16" | 0.035" | 1/8 | Zinc-Plated Steel | 6,700 psi @ 72° F | -20° to 395° | ASME B1.20.1, ASME B31.1, ASME B31.3, ASTM A179 | 0000000 | 00000 |
| 1/4" | 0.035" | 1/8 | Zinc-Plated Steel | 4,900 psi @ 72° F | -20° to 395° | ASME B1.20.1, ASME B31.1, ASME B31.3, ASTM A179 | 0000000 | 00000 |
| 1/4" | 0.035" | 1/4 | Zinc-Plated Steel | 4,900 psi @ 72° F | -20° to 395° | ASME B1.20.1, ASME B31.1, ASME B31.3, ASTM A179 | 0000000 | 00000 |
| 1/4" | 0.035" | 3/8 | Zinc-Plated Steel | 4,900 psi @ 72° F | -20° to 395° | ASME B1.20.1, ASME B31.1, ASME B31.3, ASTM A179 | 0000000 | 00000 |
| 1/4" | 0.035" | 1/2 | Zinc-Plated Steel | 4,900 psi @ 72° F | -20° to 395° | ASME B1.20.1, ASME B31.1, ASME B31.3, ASTM A179 | 0000000 | 00000 |
| 5/16" | 0.035" | 1/8 | Zinc-Plated Steel | 3,800 psi @ 72° F | -20° to 395° | ASME B1.20.1, ASME B31.1, ASME B31.3, ASTM A179 | 0000000 | 00000 |
| 5/16" | 0.035" | 1/4 | Zinc-Plated Steel | 3,800 psi @ 72° F | -20° to 395° | ASME B1.20.1, ASME B31.1, ASME B31.3, ASTM A179 | 0000000 | 00000 |
| 3/8" | 0.035" | 1/8 | Zinc-Plated Steel | 3,100 psi @ 72° F | -20° to 395° | ASME B1.20.1, ASME B31.1, ASME B31.3, ASTM A179 | 0000000 | 00000 |
| 3/8" | 0.035" | 1/4 | Zinc-Plated Steel | 3,100 psi @ 72° F | -20° to 395° | ASME B1.20.1, ASME B31.1, ASME B31.3, ASTM A179 | 0000000 | 00000 |
| 3/8" | 0.035" | 3/8 | Zinc-Plated Steel | 3,100 psi @ 72° F | -20° to 395° | ASME B1.20.1, ASME B31.1, ASME B31.3, ASTM A179 | 0000000 | 00000 |
| 3/8" | 0.035" | 1/2 | Zinc-Plated Steel | 3,100 psi @ 72° F | -20° to 395° | ASME B1.20.1, ASME B31.1, ASME B31.3, ASTM A179 | 0000000 | 00000 |
| 1/2" | 0.035" | 1/4 | Zinc-Plated Steel | 2,300 psi @ 72° F | -20° to 395° | ASME B1.20.1, ASME B31.1, ASME B31.3, ASTM A179 | 0000000 | 00000 |
| 1/2" | 0.035" | 3/8 | Zinc-Plated Steel | 2,300 psi @ 72° F | -20° to 395° | ASME B1.20.1, ASME B31.1, ASME B31.3, ASTM A179 | 0000000 | 00000 |
| 1/2" | 0.035" | 1/2 | Zinc-Plated Steel | 2,300 psi @ 72° F | -20° to 395° | ASME B1.20.1, ASME B31.1, ASME B31.3, ASTM A179 | 0000000 | 00000 |
| 1/2" | 0.035" | 3/4 | Zinc-Plated Steel | 2,300 psi @ 72° F | -20° to 395° | ASME B1.20.1, ASME B31.1, ASME B31.3, ASTM A179 | 0000000 | 00000 |
| 5/8" | 0.035" | 1/2 | Zinc-Plated Steel | 1,800 psi @ 72° F | -20° to 395° | ASME B1.20.1, ASME B31.1, ASME B31.3, ASTM A179 | 0000000 | 00000 |
| 3/4" | 0.049" | 1/2 | Zinc-Plated Steel | 2,200 psi @ 72° F | -20° to 395° | ASME B1.20.1, ASME B31.1, ASME B31.3, ASTM A179 | 0000000 | 00000 |
| 3/4" | 0.049" | 3/4 | Zinc-Plated Steel | 2,200 psi @ 72° F | -20° to 395° | ASME B1.20.1, ASME B31.1, ASME B31.3, ASTM A179 | 0000000 | 00000 |
| 1" | 0.065" | 1 | Zinc-Plated Steel | 2,100 psi @ 72° F | -20° to 395° | ASME B1.20.1, ASME B31.1, ASME B31.3, ASTM A179 | 0000000 | 00000 |
90° Elbow Connectors, Tube
For Tube | |||||||
|---|---|---|---|---|---|---|---|
| OD | Wall Thick. | Material | Max. Pressure | Temp. Range, °F | Specifications Met | Each | |
| 1/4" | 0.035" | Zinc-Plated Steel | 4,900 psi @ 72° F | -20° to 395° | ASTM A179 | 00000000 | 000000 |
| 3/8" | 0.035" | Zinc-Plated Steel | 3,100 psi @ 72° F | -20° to 395° | ASTM A179 | 00000000 | 00000 |
| 1/2" | 0.035" | Zinc-Plated Steel | 2,300 psi @ 72° F | -20° to 395° | ASTM A179 | 00000000 | 00000 |
| 5/8" | 0.035" | Zinc-Plated Steel | 1,800 psi @ 72° F | -20° to 395° | ASTM A179 | 00000000 | 00000 |
| 3/4" | 0.049" | Zinc-Plated Steel | 2,200 psi @ 72° F | -20° to 395° | ASTM A179 | 00000000 | 00000 |
| 1" | 0.065" | Zinc-Plated Steel | 2,100 psi @ 72° F | -20° to 395° | ASTM A179 | 00000000 | 000000 |
Inline Tee Adapters, Tube × Male Threaded Pipe
Inline tees are also known as branch tees.
For Tube | ||||||||
|---|---|---|---|---|---|---|---|---|
| OD | Wall Thick. | Pipe Size | Material | Max. Pressure | Temp. Range, °F | Specifications Met | Each | |
NPT Threads | ||||||||
| 1/4" | 0.035" | 1/8 | Zinc-Plated Steel | 4,900 psi @ 72° F | -20° to 395° | ASME B1.20.1, ASME B31.1, ASME B31.3, ASTM A179 | 00000000 | 000000 |
| 1/4" | 0.035" | 1/4 | Zinc-Plated Steel | 4,900 psi @ 72° F | -20° to 395° | ASME B1.20.1, ASME B31.1, ASME B31.3, ASTM A179 | 00000000 | 00000 |
| 3/8" | 0.035" | 1/4 | Zinc-Plated Steel | 3,100 psi @ 72° F | -20° to 395° | ASME B1.20.1, ASME B31.1, ASME B31.3, ASTM A179 | 00000000 | 00000 |
| 3/8" | 0.035" | 3/8 | Zinc-Plated Steel | 3,100 psi @ 72° F | -20° to 395° | ASME B1.20.1, ASME B31.1, ASME B31.3, ASTM A179 | 00000000 | 00000 |
| 1/2" | 0.035" | 3/8 | Zinc-Plated Steel | 2,300 psi @ 72° F | -20° to 395° | ASME B1.20.1, ASME B31.1, ASME B31.3, ASTM A179 | 00000000 | 00000 |
| 1/2" | 0.035" | 1/2 | Zinc-Plated Steel | 2,300 psi @ 72° F | -20° to 395° | ASME B1.20.1, ASME B31.1, ASME B31.3, ASTM A179 | 00000000 | 00000 |
| 5/8" | 0.035" | 1/2 | Zinc-Plated Steel | 1,800 psi @ 72° F | -20° to 395° | ASME B1.20.1, ASME B31.1, ASME B31.3, ASTM A179 | 00000000 | 00000 |
Inline Tee Adapters, Tube × Female Threaded Pipe
Inline tees are also known as branch tees.
For Tube | ||||||||
|---|---|---|---|---|---|---|---|---|
| OD | Wall Thick. | Pipe Size | Material | Max. Pressure | Temp. Range, °F | Specifications Met | Each | |
NPT Threads | ||||||||
| 1/4" | 0.035" | 1/4 | Zinc-Plated Steel | 4,900 psi @ 72° F | -20° to 395° | ASME B1.20.1, ASME B31.1, ASME B31.3, ASTM A179 | 00000000 | 000000 |
| 3/8" | 0.035" | 1/4 | Zinc-Plated Steel | 3,100 psi @ 72° F | -20° to 395° | ASME B1.20.1, ASME B31.1, ASME B31.3, ASTM A179 | 00000000 | 00000 |
| 1/2" | 0.035" | 1/4 | Zinc-Plated Steel | 2,300 psi @ 72° F | -20° to 395° | ASME B1.20.1, ASME B31.1, ASME B31.3, ASTM A179 | 00000000 | 000000 |
| 1/2" | 0.035" | 3/8 | Zinc-Plated Steel | 2,300 psi @ 72° F | -20° to 395° | ASME B1.20.1, ASME B31.1, ASME B31.3, ASTM A179 | 00000000 | 00000 |
| 1/2" | 0.035" | 1/2 | Zinc-Plated Steel | 2,300 psi @ 72° F | -20° to 395° | ASME B1.20.1, ASME B31.1, ASME B31.3, ASTM A179 | 00000000 | 00000 |
| 3/4" | 0.049" | 3/4 | Zinc-Plated Steel | 2,200 psi @ 72° F | -20° to 395° | ASME B1.20.1, ASME B31.1, ASME B31.3, ASTM A179 | 00000000 | 00000 |
Right-Angle Tee Adapters, Tube × Male Threaded Pipe
Right-angle tees are also known as run tees.
For Tube | ||||||||
|---|---|---|---|---|---|---|---|---|
| OD | Wall Thick. | Pipe Size | Material | Max. Pressure | Temp. Range, °F | Specifications Met | Each | |
NPT Threads | ||||||||
| 1/4" | 0.035" | 1/8 | Zinc-Plated Steel | 4,900 psi @ 72° F | -20° to 395° | ASME B1.20.1, ASME B31.1, ASME B31.3, ASTM A179 | 00000000 | 000000 |
| 1/4" | 0.035" | 1/4 | Zinc-Plated Steel | 4,900 psi @ 72° F | -20° to 395° | ASME B1.20.1, ASME B31.1, ASME B31.3, ASTM A179 | 00000000 | 00000 |
| 3/8" | 0.035" | 1/4 | Zinc-Plated Steel | 3,100 psi @ 72° F | -20° to 395° | ASME B1.20.1, ASME B31.1, ASME B31.3, ASTM A179 | 00000000 | 00000 |
| 3/8" | 0.035" | 3/8 | Zinc-Plated Steel | 3,100 psi @ 72° F | -20° to 395° | ASME B1.20.1, ASME B31.1, ASME B31.3, ASTM A179 | 00000000 | 000000 |
| 1/2" | 0.035" | 1/2 | Zinc-Plated Steel | 2,300 psi @ 72° F | -20° to 395° | ASME B1.20.1, ASME B31.1, ASME B31.3, ASTM A179 | 00000000 | 00000 |
Tee Connectors, Tube
For Tube | |||||||
|---|---|---|---|---|---|---|---|
| OD | Wall Thick. | Material | Max. Pressure | Temp. Range, °F | Specifications Met | Each | |
| 1/8" | 0.035" | Zinc-Plated Steel | 6,800 psi @ 72° F | -20° to 395° | ASTM A179 | 00000000 | 000000 |
| 1/4" | 0.035" | Zinc-Plated Steel | 4,900 psi @ 72° F | -20° to 395° | ASTM A179 | 00000000 | 00000 |
| 5/16" | 0.035" | Zinc-Plated Steel | 3,800 psi @ 72° F | -20° to 395° | ASTM A179 | 00000000 | 00000 |
| 3/8" | 0.035" | Zinc-Plated Steel | 3,100 psi @ 72° F | -20° to 395° | ASTM A179 | 00000000 | 00000 |
| 1/2" | 0.035" | Zinc-Plated Steel | 2,300 psi @ 72° F | -20° to 395° | ASTM A179 | 00000000 | 00000 |
| 5/8" | 0.035" | Zinc-Plated Steel | 1,800 psi @ 72° F | -20° to 395° | ASTM A179 | 00000000 | 00000 |
| 3/4" | 0.049" | Zinc-Plated Steel | 2,100 psi @ 72° F | -20° to 395° | ASTM A179 | 00000000 | 00000 |
| 1" | 0.065" | Zinc-Plated Steel | 2,100 psi @ 72° F | -20° to 395° | ASTM A179 | 00000000 | 000000 |
Nuts
For Tube | |||||||
|---|---|---|---|---|---|---|---|
| OD | Wall Thick. | Nut Material | Max. Pressure | Temp. Range, °F | Specifications Met | Each | |
| 1/8" | 0.035" | Zinc-Plated Steel | 6,800 psi @ 72° F | -20° to 395° | ASTM A108 | 00000000 | 00000 |
| 3/16" | 0.035" | Zinc-Plated Steel | 6,700 psi @ 72° F | -20° to 395° | ASTM A108 | 00000000 | 0000 |
| 1/4" | 0.035" | Zinc-Plated Steel | 4,900 psi @ 72° F | -20° to 395° | ASTM A108 | 00000000 | 0000 |
| 5/16" | 0.035" | Zinc-Plated Steel | 3,800 psi @ 72° F | -20° to 395° | ASTM A108 | 00000000 | 0000 |
| 3/8" | 0.035" | Zinc-Plated Steel | 3,100 psi @ 72° F | -20° to 395° | ASTM A108 | 00000000 | 0000 |
| 1/2" | 0.035" | Zinc-Plated Steel | 2,300 psi @ 72° F | -20° to 395° | ASTM A108 | 00000000 | 0000 |
| 5/8" | 0.035" | Zinc-Plated Steel | 1,800 psi @ 72° F | -20° to 395° | ASTM A108 | 00000000 | 0000 |
| 3/4" | 0.049" | Zinc-Plated Steel | 2,200 psi @ 72° F | -20° to 395° | ASTM A108 | 00000000 | 0000 |
| 1" | 0.065" | Zinc-Plated Steel | 2,100 psi @ 72° F | -20° to 395° | ASTM A108 | 00000000 | 00000 |
Front and Back Sleeves
For Tube | ||||||||
|---|---|---|---|---|---|---|---|---|
| OD | Wall Thick. | Front Sleeve Material | Back Sleeve Material | Max. Pressure | Temp. Range, °F | Specifications Met | Each | |
| 1/8" | 0.035" | Zinc-Plated Steel | 316 Stainless Steel | 6,800 psi @ 72° F | -20° to 800° | ASME B31.3 | 00000000 | 00000 |
| 3/16" | 0.035" | Zinc-Plated Steel | 316 Stainless Steel | 6,700 psi @ 72° F | -20° to 800° | ASME B31.3 | 00000000 | 0000 |
| 1/4" | 0.035" | Zinc-Plated Steel | 316 Stainless Steel | 4,850 psi @ 72° F | -20° to 800° | ASME B31.3 | 00000000 | 0000 |
| 5/16" | 0.035" | Zinc-Plated Steel | 316 Stainless Steel | 3,800 psi @ 72° F | -20° to 800° | ASME B31.3 | 00000000 | 0000 |
| 3/8" | 0.035" | Zinc-Plated Steel | 316 Stainless Steel | 3,100 psi @ 72° F | -20° to 800° | ASME B31.3 | 00000000 | 0000 |
| 1/2" | 0.035" | Zinc-Plated Steel | 316 Stainless Steel | 2,300 psi @ 72° F | -20° to 800° | ASME B31.3 | 00000000 | 00000 |
| 5/8" | 0.035" | Zinc-Plated Steel | 316 Stainless Steel | 1,800 psi @ 72° F | -20° to 800° | ASME B31.3 | 00000000 | 00000 |
| 3/4" | 0.049" | Zinc-Plated Steel | 316 Stainless Steel | 2,150 psi @ 72° F | -20° to 800° | ASME B31.3 | 00000000 | 00000 |
| 1" | 0.065" | Zinc-Plated Steel | 316 Stainless Steel | 2,100 psi @ 72° F | -20° to 800° | ASME B31.3 | 00000000 | 00000 |