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 Stainless Steel Tubing
![](/prerenderstable/mvPRE/contents/gfx/imagecache/518/5182k125--41abaabaaa61639418205-p9@halfx_637749934133411352.png?ver=imagenotfound)
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.
90° Elbow Adapters, Tube × Male Threaded Pipe
![](/prerenderstable/mvPRE/contents/gfx/imagecache/518/5182k157-@halfx_637747310222290898.png?ver=imagenotfound)
- For Use With:
NPT and BSPT Threads: Air, Cutting Oil, Fuel Oil, Gasoline, Hydraulic Fluid, Mineral Oil, Natural Gas, Steam, Water
BSPP Threads: Air, Cutting Oil, Fuel Oil, Gasoline, Mineral Oil, Water
UN/UNF (SAE Straight) Threads: Air, Cutting Oil, Fuel Oil, Gasoline, Hydraulic Fluid, Mineral Oil - Tubing:
NPT and UN/UNF (SAE Straight) Threads: Use with welded or seamless 304/304L or 316/316L stainless steel that meets ASTM A213, ASTM A249, or ASTM A269
BSPP and BSPT Threads: Use with seamless 304 or 316 stainless steel that meets ASTM A269
For Tube | |||||||
---|---|---|---|---|---|---|---|
OD | Wall Thick. | Pipe Size | Material | Max. Pressure | Temp. Range, °F | Each | |
NPT Threads | |||||||
3mm | 0.5mm | 1/8 | 316 Stainless Steel | 6,500 psi @ 72° F | -420° to 1200° | 0000000 | 000000 |
4mm | 1mm | 1/8 | 316 Stainless Steel | 6,500 psi @ 72° F | -420° to 1200° | 00000000 | 00000 |
4mm | 1mm | 1/4 | 316 Stainless Steel | 3,500 psi @ 72° F | -420° to 1200° | 00000000 | 00000 |
6mm | 1mm | 1/4 | 316 Stainless Steel | 4,000 psi @ 72° F | -420° to 1200° | 00000000 | 00000 |
6mm | 1mm | 3/8 | 316 Stainless Steel | 4,000 psi @ 72° F | -420° to 1200° | 00000000 | 00000 |
6mm | 1mm | 1/2 | 316 Stainless Steel | 4,000 psi @ 72° F | -420° to 1200° | 00000000 | 00000 |
6mm | 1 to 1.5 mm | 1/8 | 316 Stainless Steel | 6,000 psi @ 72° F | -420° to 1200° | 00000000 | 00000 |
8mm | 1mm | 1/4 | 316 Stainless Steel | 3,000 psi @ 72° F | -420° to 1200° | 00000000 | 00000 |
8mm | 1 to 1.5 mm | 1/8 | 316 Stainless Steel | 4,400 psi @ 72° F | -420° to 1200° | 00000000 | 00000 |
8mm | 1 to 1.5 mm | 3/8 | 316 Stainless Steel | 4,400 psi @ 72° F | -420° to 1200° | 00000000 | 00000 |
8mm | 1 to 1.5 mm | 1/2 | 316 Stainless Steel | 4,400 psi @ 72° F | -420° to 1200° | 00000000 | 00000 |
10mm | 0.5mm | 1/4 | 316 Stainless Steel | 2,500 psi @ 72° F | -420° to 1200° | 00000000 | 00000 |
10mm | 0.5mm | 3/8 | 316 Stainless Steel | 2,500 psi @ 72° F | -420° to 1200° | 00000000 | 00000 |
10mm | 0.5mm | 1/2 | 316 Stainless Steel | 2,500 psi @ 72° F | -420° to 1200° | 00000000 | 00000 |
12mm | 0.5mm | 1/4 | 316 Stainless Steel | 2,000 psi @ 72° F | -420° to 1200° | 00000000 | 00000 |
12mm | 0.5mm | 3/8 | 316 Stainless Steel | 2,000 psi @ 72° F | -420° to 1200° | 00000000 | 00000 |
12mm | 0.5mm | 1/2 | 316 Stainless Steel | 2,000 psi @ 72° F | -420° to 1200° | 00000000 | 00000 |
90° Elbow Adapters, Tube × Female Threaded Pipe
![](/prerenderstable/mvPRE/contents/gfx/imagecache/518/5182k212-@halfx_637747403917863696.png?ver=imagenotfound)
- 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
For Tube | |||||||
---|---|---|---|---|---|---|---|
OD | Wall Thick. | Pipe Size | Material | Max. Pressure | Temp. Range, °F | Each | |
NPT Threads | |||||||
12mm | 1 to 2 mm | 1/2 | 316 Stainless Steel | 2,900 psi @ 72° F | -420° to 1200° | 00000000 | 000000 |
90° Elbow Connectors, Tube
![](/prerenderstable/mvPRE/contents/gfx/imagecache/518/5182k416-@halfx_637749872213127323.png?ver=imagenotfound)
- 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
For Tube | ||||||
---|---|---|---|---|---|---|
OD | Wall Thick. | Material | Max. Pressure | Temp. Range, °F | Each | |
4mm | 1mm | 316 Stainless Steel | 3,500 psi @ 72° F | -420° to 1200° | 00000000 | 000000 |
6mm | 1mm | 316 Stainless Steel | 4,000 psi @ 72° F | -420° to 1200° | 00000000 | 00000 |
8mm | 1mm | 316 Stainless Steel | 3,000 psi @ 72° F | -420° to 1200° | 00000000 | 00000 |
10mm | 0.5mm | 316 Stainless Steel | 2,500 psi @ 72° F | -420° to 1200° | 00000000 | 00000 |
12mm | 0.5mm | 316 Stainless Steel | 2,000 psi @ 72° F | -420° to 1200° | 00000000 | 00000 |
14mm | 1.5mm | 316 Stainless Steel | 2,000 psi @ 72° F | -420° to 1200° | 00000000 | 00000 |
18mm | 1.5 to 2.5 mm | 316 Stainless Steel | 2,900 psi @ 72° F | -420° to 1200° | 00000000 | 000000 |
90° Elbow Reducers, Tube
![](/prerenderstable/mvPRE/contents/gfx/imagecache/518/5182k409--51f7ffcba3c1639425850-p9@halfx_637750010558109617.png?ver=imagenotfound)
- 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
For Tube (A) | For Tube (B) | |||||||
---|---|---|---|---|---|---|---|---|
OD | Wall Thick. | OD | Wall Thick. | Material | Max. Pressure | Temp. Range, °F | Each | |
6mm | 1 to 1.5 mm | 1/4" | 0.028 to 0.065 " | 316 Stainless Steel | 4,100 psi @ 72° F | -420° to 1200° | 00000000 | 000000 |
8mm | 1 to 1.5 mm | 1/4" | 0.028 to 0.065 " | 316 Stainless Steel | 4,100 psi @ 72° F | -420° to 1200° | 00000000 | 00000 |
10mm | 1 to 1.5 mm | 1/4" | 0.028 to 0.065 " | 316 Stainless Steel | 3,400 psi @ 72° F | -420° to 1200° | 00000000 | 00000 |
10mm | 1 to 1.5 mm | 3/8" | 0.035 to 0.065 " | 316 Stainless Steel | 3,300 psi @ 72° F | -420° to 1200° | 00000000 | 00000 |
Nuts
![](/prerenderstable/mvPRE/contents/gfx/imagecache/518/5182k556-@halfx_637749887448255208.png?ver=imagenotfound)
For Tube | ||||||
---|---|---|---|---|---|---|
OD | Wall Thick. | Nut Material | Max. Pressure | Temp. Range, °F | Each | |
1/4" | 0.035" | 316 Stainless Steel | 4,000 psi @ 72° F | -420° to 1200° | 00000000 | 00000 |
3/8" | 0.035" | 316 Stainless Steel | 2,500 psi @ 72° F | -420° to 1200° | 00000000 | 0000 |
3mm | 0.5mm | 316 Stainless Steel | 4,000 psi @ 72° F | -420° to 1200° | 00000000 | 0000 |
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 |
14mm | 1.5mm | 316 Stainless Steel | 2,000 psi @ 72° F | -420° to 1200° | 00000000 | 00000 |
18mm | 1.5 to 2.5 mm | 316 Stainless Steel | 2,900 psi @ 72° F | -420° to 1200° | 00000000 | 00000 |
Front and Back Sleeves
![](/prerenderstable/mvPRE/contents/gfx/imagecache/518/5182k506c1-c01f-digital@halfx_637093481488444667.png?ver=imagenotfound)
For Tube | ||||||
---|---|---|---|---|---|---|
OD | Wall Thick. | Sleeve Material | Max. Pressure | Temp. Range, °F | Each | |
1/4" | 0.035" | 316 Stainless Steel | 4,000 psi @ 72° F | -420° to 1200° | 00000000 | 00000 |
3/8" | 0.035" | 316 Stainless Steel | 2,500 psi @ 72° F | -420° to 1200° | 00000000 | 0000 |
3mm | 0.5mm | 316 Stainless Steel | 4,000 psi @ 72° F | -420° to 1200° | 00000000 | 0000 |
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 |
14mm | 1.5mm | 316 Stainless Steel | 2,000 psi @ 72° F | -420° to 1200° | 00000000 | 00000 |
18mm | 1.5 to 2.5 mm | 316 Stainless Steel | 2,900 psi @ 72° F | -420° to 1200° | 00000000 | 00000 |