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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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Threaded Hose Fittings for Hydraulic Fluid
Fittings are threaded on both ends so you can connect them directly to a threaded hose or to pumps, cylinders, and other equipment in your hydraulic system.
Zinc-plated steel fittings are stronger and more durable than stainless steel fittings. They have fair corrosion resistance. 316 stainless steel fittings have excellent corrosion resistance.
Fittings that swivel until tightened rotate for easy installation.
Fittings with a 37° flared end are also known as JIC (Joint Industrial Council) fittings.
BSPP threads have a gasket or a 60° internal flare to protect against leaks.
Straight Adapters (Swivels Until Tightened), BSPP Female Hose × BSPP Male Hose
Straight Adapters (Swivels Until Tightened), BSPP Male Hose × UN/UNF (Tube End) Female 37° Flared Tube
- Maximum Pressure: See table
- Temperature Range: -20° to 230° F
- Specifications Met: SAE J514
Male Hose Connection | ||||||
|---|---|---|---|---|---|---|
| Pipe Size  | Dash Size | For Tube OD | Thread Size | Max. Pressure | Each | |
Zinc-Plated Steel | ||||||
| 1/4 | 04 | 1/4" | 7/16"-20 | 6,000 psi @ 72° F | 0000000 | 00000 |
| 1/4 | 04 | 3/8" | 9/16"-18 | 6,000 psi @ 72° F | 0000000 | 0000 |
| 3/8 | 06 | 1/4" | 7/16"-20 | 5,500 psi @ 72° F | 0000000 | 00000 |
| 3/8 | 06 | 3/8" | 9/16"-18 | 5,500 psi @ 72° F | 0000000 | 0000 |
| 3/8 | 06 | 1/2" | 3/4"-16 | 4,500 psi @ 72° F | 0000000 | 00000 |
| 1/2 | 08 | 3/8" | 9/16"-18 | 4,500 psi @ 72° F | 0000000 | 00000 |
| 1/2 | 08 | 1/2" | 3/4"-16 | 4,500 psi @ 72° F | 0000000 | 0000 |
| 1/2 | 08 | 3/4" | 1 1/16"-12 | 3,500 psi @ 72° F | 0000000 | 00000 |
| 3/4 | 12 | 1/2" | 3/4"-16 | 3,500 psi @ 72° F | 0000000 | 00000 |
| 3/4 | 12 | 3/4" | 1 1/16"-12 | 3,500 psi @ 72° F | 0000000 | 00000 |
| 3/4 | 12 | 1" | 1 5/16"-12 | 3,000 psi @ 72° F | 0000000 | 00000 |
| 1 | 16 | 3/4" | 1 1/16"-12 | 3,000 psi @ 72° F | 0000000 | 00000 |
| 1 | 16 | 1" | 1 5/16"-12 | 3,000 psi @ 72° F | 0000000 | 00000 |
Straight Adapters, BSPP Male Hose × NPT Male Hose
Straight Adapters, NPT Male Hose × UN/UNF (SAE Straight) Male Threaded Pipe
- Maximum Pressure: 15,000 psi @ 72° F
- Temperature Range: -420° to 350° F
- Specifications Met: SAE J476
Straight Connectors, BSPP Male Hose
Straight Reducers, BSPP Male Hose
Straight Reducing Adapters (Swivels Until Tightened), BSPP Female Hose × BSPP Male Hose
- Maximum Pressure: See table
- Temperature Range: -20° to 230° F
Pipe Size | Dash Size | |||||
|---|---|---|---|---|---|---|
| (A) | (B) | (A) | (B) | Max. Pressure | Each | |
Zinc-Plated Steel | ||||||
| 1/4 | 3/8 | 04 | 06 | 5,500 psi @ 72° F | 0000000 | 00000 |
| 3/8 | 1/4 | 06 | 04 | 5,500 psi @ 72° F | 0000000 | 0000 |
| 3/8 | 1/2 | 06 | 08 | 4,500 psi @ 72° F | 0000000 | 0000 |
| 1/2 | 3/8 | 08 | 06 | 4,500 psi @ 72° F | 0000000 | 0000 |
| 1/2 | 3/4 | 08 | 12 | 3,500 psi @ 72° F | 0000000 | 00000 |
| 3/4 | 1/2 | 12 | 08 | 3,500 psi @ 72° F | 0000000 | 00000 |
| 3/4 | 1 | 12 | 16 | 3,000 psi @ 72° F | 0000000 | 00000 |
| 1 | 3/4 | 16 | 12 | 3,000 psi @ 72° F | 0000000 | 00000 |
Straight Reducing Adapters, BSPP Male Hose × NPT Male Hose
- Maximum Pressure: See table
- Temperature Range: -20° to 230° F
Pipe Size | Thread Type | Dash Size | ||||||
|---|---|---|---|---|---|---|---|---|
| (A) | (B) | (A) | (B) | (A) | (B) | Max. Pressure | Each | |
Zinc-Plated Steel | ||||||||
| 1/4 | 3/8 | BSPP | NPT | 04 | 06 | 5,500 psi @ 72° F | 0000000 | 00000 |
| 3/8 | 1/4 | BSPP | NPT | 06 | 04 | 5,500 psi @ 72° F | 0000000 | 0000 |
| 3/8 | 1/2 | BSPP | NPT | 06 | 08 | 4,500 psi @ 72° F | 0000000 | 0000 |
| 1/2 | 3/8 | BSPP | NPT | 08 | 06 | 4,500 psi @ 72° F | 0000000 | 0000 |
| 1/2 | 3/4 | BSPP | NPT | 08 | 12 | 3,500 psi @ 72° F | 0000000 | 00000 |
| 3/4 | 1/2 | BSPP | NPT | 12 | 08 | 3,500 psi @ 72° F | 0000000 | 00000 |
| 3/4 | 1 | BSPP | NPT | 12 | 16 | 3,000 psi @ 72° F | 0000000 | 00000 |
| 1 | 3/4 | BSPP | NPT | 16 | 12 | 3,000 psi @ 72° F | 0000000 | 00000 |
Caps (Swivels Until Tightened), BSPP Female Hose
