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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How to Measure Threaded Pipe Size
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Plastic Pipe Fittings for Oil
Made of corrosion-resistant plastic, these fittings won’t deteriorate when used in oil applications. They also have high strength and impact resistance. Apply a non-hardening, plastic-compatible sealant to the male threads to prevent leaks. Tape or sealants with PTFE are not recommended for plastic-to-plastic threaded connections. When making a threaded connection be careful not to overtighten the threads. To prevent cracks and leaks, finger tighten the fitting, then wrench-tighten one to two turns.
Warning: Never use plastic pipe fittings and pipe with compressed air or gas.
For technical drawings and 3-D models, click on a part number.
- For Use With: Oil
- Maximum Temperature: 140° F
Pipe Size | Material | Color | Maximum Pressure | Pkg. Qty. | Pkg. | |
BSPP | ||||||
|---|---|---|---|---|---|---|
| 1/4 | Polyethylene Plastic | Red | Not Rated | 10 | 0000000 | 00000 |
| 1/2 | Polyethylene Plastic | Red | Not Rated | 10 | 0000000 | 0000 |
| 5/8 | Polyethylene Plastic | Red | Not Rated | 10 | 0000000 | 0000 |
| 3/4 | Polyethylene Plastic | Red | Not Rated | 10 | 0000000 | 0000 |
| 1 | Polyethylene Plastic | Red | Not Rated | 10 | 0000000 | 0000 |
| 1 1/4 | Polyethylene Plastic | Red | Not Rated | 5 | 0000000 | 0000 |
Low-Pressure Aluminum Threaded Pipe Fittings
In addition to being lightweight, these aluminum fittings offer good corrosion resistance. Use them in low-pressure flow applications. To prevent cracking, do not tighten more than a 1/4-turn past hand tight.
DIN 3852 fittings meet DIN standards for mating surface outer diameter. They have a Buna-N rubber gasket that resists grease, hydraulic oil, and motor oil—plus mild chemicals and water. The gasket stays in a groove undercut in the mating face, which prevents it from dropping out and from extruding when fittings are tightened. Black anodized and powder-coated fittings have a decorative matte black finish.
Adjust finger-grip fittings by hand, no tools required.
For technical drawings and 3-D models, click on a part number.
Male Threads
with Gasket
- For Use With: Air, Oil, Water
- Specifications Met: DIN 3852
- Pipe Nipples and Pipe: Use aluminum
Black Powder-Coated Aluminum Alloy | Aluminum Alloy | |||||||
|---|---|---|---|---|---|---|---|---|
| Pipe Size | Thread Size | Thread Pitch, mm | Plug Construction | Max. Pressure | Each | Each | ||
BSPP Male | ||||||||
| 3/8 | __ | __ | Solid | Not Rated | 000000 | 00 | 00000000 | 000000 |
| 1/2 | __ | __ | Solid | Not Rated | 00000000 | 000000 | 000000 | 00 |
| 3/4 | __ | __ | Solid | Not Rated | 00000000 | 00000 | 000000 | 00 |
| 1 | __ | __ | Solid | Not Rated | 00000000 | 00000 | 00000000 | 00000 |
Metric Male | ||||||||
| 1/2 | M20 | 1.5 | Solid | Not Rated | 00000000 | 00000 | 00000000 | 00000 |