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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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About Turnbuckles and End Fittings
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Jam Nuts for Turnbuckles
Tighten these nuts against the turnbuckle body to prevent the end fitting from unscrewing.
For Galvanized Steel Turnbuckles
| Thread Size  | Wd. | Ht. | Includes | Each | |
Grade 2 Galvanized Steel | |||||
|---|---|---|---|---|---|
| 1/4"-20 | 7/16" | 5/32" | One Left-Hand Threaded Jam Nut, One Right-Hand Threaded Jam Nut | 00000000 | 00000 |
| 5/16"-18 | 1/2" | 3/16" | One Left-Hand Threaded Jam Nut, One Right-Hand Threaded Jam Nut | 00000000 | 0000 |
| 3/8"-16 | 9/16" | 7/32" | One Left-Hand Threaded Jam Nut, One Right-Hand Threaded Jam Nut | 00000000 | 0000 |
| 1/2"-13 | 3/4" | 5/16" | One Left-Hand Threaded Jam Nut, One Right-Hand Threaded Jam Nut | 00000000 | 0000 |
| 5/8"-11 | 15/16" | 25/64" | One Left-Hand Threaded Jam Nut, One Right-Hand Threaded Jam Nut | 00000000 | 0000 |
| 3/4"-10 | 1 1/8" | 27/64" | One Left-Hand Threaded Jam Nut, One Right-Hand Threaded Jam Nut | 00000000 | 0000 |
| 7/8"-9 | 1 19/64" | 31/64" | One Left-Hand Threaded Jam Nut, One Right-Hand Threaded Jam Nut | 00000000 | 00000 |
| 1"-8 | 1 15/32" | 35/64" | One Left-Hand Threaded Jam Nut, One Right-Hand Threaded Jam Nut | 00000000 | 00000 |
| 1 1/2"-6 | 2 1/4" | 27/32" | One Left-Hand Threaded Jam Nut, One Right-Hand Threaded Jam Nut | 000000000 | 00000 |
| 1 1/4"-7 | 1 7/8" | 23/32" | One Left-Hand Threaded Jam Nut, One Right-Hand Threaded Jam Nut | 000000000 | 00000 |
Extreme-Pressure Steel Threaded Pipe Fittings
The strongest steel fittings we offer, these can withstand extreme-pressure applications.
Galvanized and zinc-plated steel fittings have better corrosion resistance than plain steel fittings. PTFE-coated steel fittings have better corrosion resistance than galvanized and zinc-plated steel fittings.
Locknuts thread onto the male end of a fitting to provide extra holding power so the fitting won’t loosen from vibration.
Locknuts
- For Use With: Air, Hydraulic Fluid, Natural Gas, Oil, Steam, Water
- Temperature Range: -100° to 500° F
- Pipe Nipples and Pipe: Use Schedule XXH steel
- Flanges: Use Class 1500 steel
| Pipe Size | Dash Size | Max. Pressure | Max. Steam Pressure | Material | Each | |
NPT Female | ||||||
|---|---|---|---|---|---|---|
| 1/8 | 02 | 10,000 psi @ 72° F | 5,000 psi @ 500° F | Galvanized Steel | 0000000 | 000000 |
| 1/4 | 04 | 10,000 psi @ 72° F | 5,000 psi @ 500° F | Galvanized Steel | 0000000 | 00000 |
| 3/8 | 06 | 10,000 psi @ 72° F | 5,000 psi @ 500° F | Galvanized Steel | 0000000 | 00000 |
| 1/2 | 08 | 10,000 psi @ 72° F | 5,000 psi @ 500° F | Galvanized Steel | 0000000 | 00000 |
| 3/4 | 12 | 5,000 psi @ 72° F | 5,000 psi @ 500° F | Galvanized Steel | 0000000 | 00000 |
| 1 | 16 | 5,000 psi @ 72° F | 5,000 psi @ 500° F | Galvanized Steel | 0000000 | 00000 |
| 1 1/4 | 20 | 5,000 psi @ 72° F | 5,000 psi @ 500° F | Galvanized Steel | 0000000 | 00000 |
| 1 1/2 | 24 | 3,000 psi @ 72° F | 5,000 psi @ 500° F | Galvanized Steel | 0000000 | 00000 |
| 2 | 32 | 3,000 psi @ 72° F | 5,000 psi @ 500° F | Galvanized Steel | 0000000 | 000000 |