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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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Plastic Barbed Hose Fittings for Water
Made of polypropylene, these fittings have good corrosion and abrasion resistance, and are lighter in weight than metal barbed hose fittings. Slide the barbed end into plastic or rubber hose and secure with a clamp.
Fittings with a threaded end are also known as hose nipples.
- Maximum Pressure: 150 psi @ 72° F
- Temperature Range: 10° to 150° F
- Attachment Type: Use Worm-Drive Clamps or Bolt Clamps
Hose × Male
Threaded Pipe
- Maximum Pressure: 150 psi @ 72° F
- Temperature Range: 10° to 150° F
- Attachment Type: Use Worm-Drive Clamps or Bolt Clamps
- Maximum Pressure: 150 psi @ 72° F
- Temperature Range: 10° to 150° F
- Attachment Type: Use Worm-Drive Clamps or Bolt Clamps
Crimp-On Hose Fittings for Hydraulic Fluid
Crimp these fittings onto hydraulic hose for a permanent, leak-tight connection. Since they crimp on, they handle higher pressure than screw-on fittings. To install, use Parker crimping tools and dies (not included).
Fittings with a female end swivel 360° until tightened without you needing to move or twist the entire hose, making them easy to install.
Fittings with an O-ring face seal end are also known as Seal-Lok fittings.
Note: Fittings are only for use with hydraulic hose.
- Maximum Pressure: See table
- Temperature Range: -40° to 210° F
- For Hose Manufacturer Series:
Parker 43 Series Fittings: 302 SAE J517 100R2AT, 422 SAE J517 100R1AT, 487 ISO17582-AC, 777 ISO17582-CC
Parker 56 Series Fittings: 510D J517 SAE 100R7, 518D J517 SAE 100R7
For Hose | ||||||||
|---|---|---|---|---|---|---|---|---|
| ID | OD | For Tube OD | Thread Size | Thread Type | Dash Size | Max. Pressure | Each | |
Zinc-Plated Steel—Parker 43 Series | ||||||||
| 3/8" | 11/16" | 3/8" | 11/16"-16 | UN/UNF (SAE Straight) | 06 | 4,000 psi @ 72° F | 0000000 | 00000 |
Zinc-Plated Steel—Parker 56 Series | ||||||||
| 1/4" | 1/2" | 3/8" | 11/16"-16 | UN/UNF (SAE Straight) | 06 | 3,000 psi @ 72° F | 0000000 | 00000 |
| 3/8" | 5/8" | 3/8" | 11/16"-16 | UN/UNF (SAE Straight) | 06 | 2,250 psi @ 72° F | 0000000 | 00000 |
Screw-On Hose Fittings for Hydraulic Fluid
With just a vise and a wrench, make or repair hose assemblies in the field. These fittings thread directly onto hydraulic hose, so you don't need to crimp. To install, separate the two pieces. Screw the hose end onto your hose first and then thread the two pieces of the fitting back together. These fittings compress against the hose to form a strong seal. Also known as reusable fittings, they can be unscrewed from your hose and used again.
Fittings with an O-ring face seal end are also known as Seal-Lok fittings. They swivel until tightened for easy installation.
Zinc-plated steel fittings are stronger and resist wear and tear better than 316 stainless steel fittings. The zinc plating resists rusting in wet environments.
Parker 51R series fittings are easier to install if you use a vice jaw liner (sold separately) to firmly hold the end of your hose in place while you screw on the fitting.
Note: Fittings are only for use with hydraulic hose.
- Maximum Pressure: 2,250 psi @ 72° F
- Temperature Range: -40° to 212° F
- For Hose Manufacturer Series: Parker 510D and 518D J517 SAE 100R7