How to Install Key-Locking Inserts
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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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Extreme-Pressure Stainless Steel Threaded Pipe Fittings
With the strength to handle extreme pressures, these fittings can be used to connect equipment in hydraulic fluid lines. 316 stainless steel fittings have excellent corrosion resistance. UN/UNF (SAE Straight) threads are also known as O-ring boss threads; the male threads have a gasket to prevent leaks.
For technical drawings and 3-D models, click on a part number.
- For Use With: Hydraulic Fluid, Oil, Water
316 Stainless Steel | |||||
|---|---|---|---|---|---|
| Pipe Size (A)  | Dash Size (A) | Thread Size (B) | Max. Pressure | Each | |
NPT Female × UN/UNF (SAE Straight) Female | |||||
| 1/2 | 08 | 1 1/8"-12 | 15,000 psi @ 72° F | 000000000 | 0000000 |
- Specifications Met: See table
- For Use With: See table
316 Stainless Steel | ||||||
|---|---|---|---|---|---|---|
| Thread Size (A) | Pipe Size (B) | Dash Size (B) | Max. Pressure | For Use With | Each | |
UN/UNF (SAE Straight) Female × NPT Male | ||||||
| 1 1/8"-12 | 1/2 | 08 | 15,000 psi @ 72° F | Hydraulic Fluid, Oil, Water | 000000000 | 0000000 |
Black-Phosphate Steel Key-Locking Inserts
A black-phosphate finish provides mild corrosion resistance. Drive the keys into the surrounding material for a more secure hold than thread-locking inserts. Use them to repair or change threads in soft metals such as aluminum. They’re comparable to Keensert® inserts. Installation requires a drill bit, a standard tap, an installation tool, and a hammer.
Choose inserts with a thick wall for greater strength than thin-wall inserts, or to fill a large hole with stripped threads.
For technical drawings and 3-D models, click on a part number.