Filter by
Thread Type
Maximum Pressure @ Temperature
Specifications Met
Gasket Material
Hex Width
Length
Export Control Classification Number (ECCN)
DFARS Specialty Metals
RoHS
Maximum Steam Pressure @ Temperature
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.
More
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.
NPTF (Dryseal) threads are compatible with NPT threads. BSPP and metric male threads have either a gasket or a gasket and washer to prevent leaks. 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.
Straight Adapters, Female × Male
Straight Adapter
BSPP and Metric
Male Threads with
Gasket and Washer
Male Threads with
Gasket and Washer
BSPP, Metric, and
UN/UNF (SAE Straight)
Male Threads with Gasket
UN/UNF (SAE Straight)
Male Threads with Gasket
- Specifications Met: See table
- For Use With: See table
316 Stainless Steel | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Pipe Size (A)  | Dash Size (A) | Pipe Size (B) | Thread Size (B) | Dash Size (B) | Max. Pressure | Max. Steam Pressure | For Use With | Specifications Met | Each | |
NPT Female × BSPP Male | ||||||||||
| 1/8 | 02 | 1/8 | __ | 02 | 2,900 psi @ 72° F | __ | Hydraulic Fluid, Oil, Water | ASME B1.20.3, ISO 1179, ISO 8434-6 | 00000000 | 000000 |
| 1/4 | 04 | 1/4 | __ | 04 | 2,900 psi @ 72° F | __ | Hydraulic Fluid, Oil, Water | ASME B1.20.3, ISO 1179, ISO 8434-6 | 00000000 | 00000 |
| 3/8 | 06 | 3/8 | __ | 06 | 2,900 psi @ 72° F | __ | Hydraulic Fluid, Oil, Water | ASME B1.20.3, ISO 1179, ISO 8434-6 | 00000000 | 00000 |
| 1/2 | 08 | 1/2 | __ | 08 | 2,900 psi @ 72° F | __ | Hydraulic Fluid, Oil, Water | ASME B1.20.3, ISO 1179, ISO 8434-6 | 00000000 | 00000 |
| 3/4 | 12 | 3/4 | __ | 12 | 2,900 psi @ 72° F | __ | Hydraulic Fluid, Oil, Water | ASME B1.20.3, ISO 1179, ISO 8434-6 | 00000000 | 00000 |
| 1 | 16 | 1 | __ | 16 | 2,900 psi @ 72° F | __ | Hydraulic Fluid, Oil, Water | ASME B1.20.3, ISO 1179, ISO 8434-6 | 00000000 | 000000 |
| 1 1/4 | 20 | 1 1/4 | __ | 20 | 2,300 psi @ 72° F | __ | Hydraulic Fluid, Oil, Water | ASME B1.20.3, ISO 1179, ISO 8434-6 | 00000000 | 000000 |
| 1 1/2 | 24 | 1 1/2 | __ | 24 | 1,800 psi @ 72° F | __ | Hydraulic Fluid, Oil, Water | ASME B1.20.3, ISO 1179, ISO 8434-6 | 00000000 | 000000 |
| 2 | 32 | 2 | __ | 32 | 1,200 psi @ 72° F | __ | Hydraulic Fluid, Oil, Water | ASME B1.20.3, ISO 1179, ISO 8434-6 | 00000000 | 000000 |
NPT Female × Metric Male | ||||||||||
| 1/8 | 02 | __ | M10 × 1 mm | __ | 5,000 psi @ 72° F | __ | Hydraulic Fluid, Oil, Water | ASME B1.20.3, DIN 7631, ISO 9974 | 00000000 | 00000 |
| 1/4 | 04 | __ | M12 × 1.5 mm | __ | 5,000 psi @ 72° F | __ | Hydraulic Fluid, Oil, Water | ASME B1.20.3, DIN 7631, ISO 9974 | 00000000 | 00000 |
| 1/4 | 04 | __ | M14 × 1.5 mm | __ | 5,000 psi @ 72° F | __ | Hydraulic Fluid, Oil, Water | ASME B1.20.3, DIN 7631, ISO 9974 | 00000000 | 00000 |
| 3/8 | 06 | __ | M16 × 1.5 mm | __ | 4,500 psi @ 72° F | __ | Hydraulic Fluid, Oil, Water | ASME B1.20.3, DIN 7631, ISO 9974 | 00000000 | 00000 |
| 3/8 | 06 | __ | M18 × 1.5 mm | __ | 4,500 psi @ 72° F | __ | Hydraulic Fluid, Oil, Water | ASME B1.20.3, DIN 7631, ISO 9974 | 00000000 | 00000 |
| 1/2 | 08 | __ | M18 × 1.5 mm | __ | 4,000 psi @ 72° F | __ | Hydraulic Fluid, Oil, Water | ASME B1.20.3, DIN 7631, ISO 9974 | 00000000 | 00000 |
| 1/2 | 08 | __ | M20 × 1.5 mm | __ | 3,500 psi @ 72° F | __ | Hydraulic Fluid, Oil, Water | ASME B1.20.3, DIN 7631, ISO 9974 | 00000000 | 00000 |
| 1/2 | 08 | __ | M22 × 1.5 mm | __ | 3,500 psi @ 72° F | __ | Hydraulic Fluid, Oil, Water | ASME B1.20.3, DIN 7631, ISO 9974 | 00000000 | 00000 |
NPTF Female × UN/UNF (SAE Straight) Male | ||||||||||
| 1/8 | 02 | __ | 5/16"-24 | 02 | 7,200 psi @ 72° F | 7,200 psi @ 200° F | Hydraulic Fluid, Oil, Steam, Water | SAE J514 | 000000000 | 00000 |
| 1/8 | 02 | __ | 7/16"-20 | 04 | 7,200 psi @ 72° F | 7,200 psi @ 200° F | Hydraulic Fluid, Oil, Steam, Water | SAE J514 | 000000000 | 00000 |
| 1/8 | 02 | __ | 3/4"-16 | 08 | 7,200 psi @ 72° F | 7,200 psi @ 200° F | Hydraulic Fluid, Oil, Steam, Water | SAE J514 | 000000000 | 00000 |
| 1/4 | 04 | __ | 7/16"-20 | 04 | 6,000 psi @ 72° F | __ | Hydraulic Fluid (Petroleum Base), Oil, Water | ISO 8434-1, SAE J514 | 000000000 | 000000 |
| 1/4 | 04 | __ | 9/16"-18 | 06 | 6,000 psi @ 72° F | __ | Hydraulic Fluid (Petroleum Base), Oil, Water | ISO 8434-1, SAE J514 | 000000000 | 00000 |
| 1/4 | 04 | __ | 3/4"-16 | 08 | 6,000 psi @ 72° F | __ | Hydraulic Fluid (Petroleum Base), Oil, Water | ISO 8434-1, SAE J514 | 000000000 | 00000 |
| 1/4 | 04 | __ | 7/8"-14 | 10 | 6,600 psi @ 72° F | 6,600 psi @ 200° F | Hydraulic Fluid, Oil, Steam, Water | SAE J514 | 000000000 | 00000 |
| 1/4 | 04 | __ | 1 1/16"-12 | 12 | 6,000 psi @ 72° F | 6,000 psi @ 200° F | Hydraulic Fluid, Oil, Steam, Water | SAE J514 | 000000000 | 00000 |
| 3/8 | 06 | __ | 9/16"-18 | 06 | 6,000 psi @ 72° F | __ | Hydraulic Fluid (Petroleum Base), Oil, Water | ISO 8434-1, SAE J514 | 000000000 | 00000 |
| 3/8 | 06 | __ | 3/4"-16 | 08 | 6,000 psi @ 72° F | __ | Hydraulic Fluid (Petroleum Base), Oil, Water | ISO 8434-1, SAE J514 | 000000000 | 00000 |
| 3/8 | 06 | __ | 7/8"-14 | 10 | 6,600 psi @ 72° F | 6,600 psi @ 200° F | Hydraulic Fluid, Oil, Steam, Water | SAE J514 | 000000000 | 00000 |
| 3/8 | 06 | __ | 1 1/16"-12 | 12 | 6,000 psi @ 72° F | 6,000 psi @ 200° F | Hydraulic Fluid, Oil, Steam, Water | SAE J514 | 000000000 | 00000 |
| 1/2 | 08 | __ | 9/16"-18 | 06 | 7,200 psi @ 72° F | 7,200 psi @ 200° F | Hydraulic Fluid, Oil, Steam, Water | SAE J514 | 000000000 | 00000 |
| 1/2 | 08 | __ | 3/4"-16 | 08 | 6,000 psi @ 72° F | __ | Hydraulic Fluid (Petroleum Base), Oil, Water | ISO 8434-1, SAE J514 | 000000000 | 000000 |
| 1/2 | 08 | __ | 7/8"-14 | 10 | 6,000 psi @ 72° F | 6,000 psi @ 200° F | Hydraulic Fluid, Oil, Steam, Water | SAE J514 | 000000000 | 00000 |
| 1/2 | 08 | __ | 1 1/16"-12 | 12 | 6,000 psi @ 72° F | 6,000 psi @ 200° F | Hydraulic Fluid, Oil, Steam, Water | SAE J514 | 000000000 | 00000 |
| 3/4 | 12 | __ | 7/8"-14 | 10 | 4,800 psi @ 72° F | 4,800 psi @ 200° F | Hydraulic Fluid, Oil, Steam, Water | SAE J514 | 000000000 | 00000 |
| 3/4 | 12 | __ | 1 1/16"-12 | 12 | 4,800 psi @ 72° F | 4,800 psi @ 200° F | Hydraulic Fluid, Oil, Steam, Water | SAE J514 | 000000000 | 00000 |
BSPP Female × NPT Male | ||||||||||
| 1/8 | 02 | 1/8 | __ | 02 | 6,000 psi @ 72° F | __ | Hydraulic Fluid, Oil, Water | ASME B1.20.3, ISO 1179, ISO 8434-6 | 0000000 | 00000 |
| 1/4 | 04 | 1/4 | __ | 04 | 6,000 psi @ 72° F | __ | Hydraulic Fluid, Oil, Water | ASME B1.20.3, ISO 1179, ISO 8434-6 | 0000000 | 00000 |
| 3/8 | 06 | 3/8 | __ | 06 | 6,000 psi @ 72° F | __ | Hydraulic Fluid, Oil, Water | ASME B1.20.3, ISO 1179, ISO 8434-6 | 0000000 | 00000 |
| 1/2 | 08 | 1/2 | __ | 08 | 5,000 psi @ 72° F | __ | Hydraulic Fluid, Oil, Water | ASME B1.20.3, ISO 1179, ISO 8434-6 | 0000000 | 00000 |
| 3/4 | 12 | 3/4 | __ | 12 | 4,500 psi @ 72° F | __ | Hydraulic Fluid, Oil, Water | ASME B1.20.3, ISO 1179, ISO 8434-6 | 0000000 | 00000 |
| 1 | 16 | 1 | __ | 16 | 3,500 psi @ 72° F | __ | Hydraulic Fluid, Oil, Water | ASME B1.20.3, ISO 1179, ISO 8434-6 | 0000000 | 00000 |
BSPP Female × UN/UNF (SAE Straight) Male | ||||||||||
| 1/4 | 04 | __ | 7/16"-20 | 04 | 6,000 psi @ 72° F | __ | Hydraulic Fluid (Petroleum Base), Oil, Water | ISO 8434-1, SAE J514 | 000000000 | 00000 |
| 1/4 | 04 | __ | 9/16"-18 | 06 | 6,000 psi @ 72° F | __ | Hydraulic Fluid (Petroleum Base), Oil, Water | ISO 8434-1, SAE J514 | 000000000 | 00000 |
| 1/4 | 04 | __ | 3/4"-16 | 08 | 6,000 psi @ 72° F | __ | Hydraulic Fluid (Petroleum Base), Oil, Water | ISO 8434-1, SAE J514 | 000000000 | 00000 |
Straight Adapters, Male
Front
BSPP and Metric
Male Threads with
Gasket and Washer
Male Threads with
Gasket and Washer
UN/UNF
(SAE Straight) Male
Threads with Gasket
(SAE Straight) Male
Threads with Gasket
- For Use With: See table
- Specifications Met: See table
316 Stainless Steel | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Pipe Size (A) | Thread Size (A) | Dash Size (A) | Pipe Size (B) | Thread Size (B) | Dash Size (B) | Max. Pressure | For Use With | Specifications Met | Each | |
BSPP Male × Metric Male | ||||||||||
| 1/4 | __ | 04 | __ | M12 × 1.5 mm | __ | 5,000 psi @ 72° F | Hydraulic Fluid, Oil, Water | DIN 7631, ISO 1179, ISO 8434-6, ISO 9974 | 00000000 | 000000 |
| 1/4 | __ | 04 | __ | M14 × 1.5 mm | __ | 5,000 psi @ 72° F | Hydraulic Fluid, Oil, Water | DIN 7631, ISO 1179, ISO 8434-6, ISO 9974 | 00000000 | 00000 |
| 1/4 | __ | 04 | __ | M16 × 1.5 mm | __ | 5,000 psi @ 72° F | Hydraulic Fluid, Oil, Water | DIN 7631, ISO 1179, ISO 8434-6, ISO 9974 | 00000000 | 00000 |
| 3/8 | __ | 06 | __ | M16 × 1.5 mm | __ | 5,000 psi @ 72° F | Hydraulic Fluid, Oil, Water | DIN 7631, ISO 1179, ISO 8434-6, ISO 9974 | 00000000 | 00000 |
| 3/8 | __ | 06 | __ | M20 × 1.5 mm | __ | 5,000 psi @ 72° F | Hydraulic Fluid, Oil, Water | DIN 7631, ISO 1179, ISO 8434-6, ISO 9974 | 00000000 | 00000 |
| 1/2 | __ | 08 | __ | M16 × 1.5 mm | __ | 4,500 psi @ 72° F | Hydraulic Fluid, Oil, Water | DIN 7631, ISO 1179, ISO 8434-6, ISO 9974 | 00000000 | 00000 |
| 1/2 | __ | 08 | __ | M18 × 1.5 mm | __ | 4,500 psi @ 72° F | Hydraulic Fluid, Oil, Water | DIN 7631, ISO 1179, ISO 8434-6, ISO 9974 | 00000000 | 00000 |
| 1/2 | __ | 08 | __ | M20 × 1.5 mm | __ | 4,500 psi @ 72° F | Hydraulic Fluid, Oil, Water | DIN 7631, ISO 1179, ISO 8434-6, ISO 9974 | 00000000 | 00000 |
| 1/2 | __ | 08 | __ | M22 × 1.5 mm | __ | 4,500 psi @ 72° F | Hydraulic Fluid, Oil, Water | DIN 7631, ISO 1179, ISO 8434-6, ISO 9974 | 00000000 | 00000 |
| 3/4 | __ | 12 | __ | M22 × 1.5 mm | __ | 3,600 psi @ 72° F | Hydraulic Fluid, Oil, Water | DIN 7631, ISO 1179, ISO 8434-6, ISO 9974 | 00000000 | 00000 |
| 3/4 | __ | 12 | __ | M27 × 2 mm | __ | 3,600 psi @ 72° F | Hydraulic Fluid, Oil, Water | DIN 7631, ISO 1179, ISO 8434-6, ISO 9974 | 00000000 | 00000 |
UN/UNF (SAE Straight) Male × BSPP Male | ||||||||||
| __ | 7/16"-20 | 04 | 1/4 | __ | 04 | 5,000 psi @ 72° F | Hydraulic Fluid, Oil, Water | ISO 1179, ISO 8434-6, SAE J1926 | 00000000 | 00000 |
| __ | 7/16"-20 | 04 | 3/8 | __ | 06 | 5,000 psi @ 72° F | Hydraulic Fluid, Oil, Water | ISO 1179, ISO 8434-6, SAE J1926 | 00000000 | 00000 |
| __ | 9/16"-18 | 06 | 1/4 | __ | 04 | 5,000 psi @ 72° F | Hydraulic Fluid, Oil, Water | ISO 1179, ISO 8434-6, SAE J1926 | 00000000 | 00000 |
| __ | 9/16"-18 | 06 | 3/8 | __ | 06 | 5,000 psi @ 72° F | Hydraulic Fluid, Oil, Water | ISO 1179, ISO 8434-6, SAE J1926 | 00000000 | 00000 |
| __ | 3/4"-16 | 08 | 1/2 | __ | 08 | 4,500 psi @ 72° F | Hydraulic Fluid, Oil, Water | ISO 1179, ISO 8434-6, SAE J1926 | 00000000 | 00000 |
| __ | 3/4"-16 | 08 | 3/4 | __ | 12 | 3,600 psi @ 72° F | Hydraulic Fluid, Oil, Water | ISO 1179, ISO 8434-6, SAE J1926 | 00000000 | 000000 |
Replacement Washers
- Temperature Range: -22° to 230° F
316 Stainless Steel | |||||
|---|---|---|---|---|---|
| For Pipe Size | For Thread Size | Gasket Material | Thickness | Each | |
For BSPP Male | |||||
| 1/8 | __ | Buna-N Rubber | 2mm | 00000000 | 00000 |
| 1/4 | __ | Buna-N Rubber | 2.03mm | 00000000 | 0000 |
| 3/8 | __ | Buna-N Rubber | 2mm | 00000000 | 0000 |
| 1/2 | __ | Buna-N Rubber | 2.5mm | 00000000 | 0000 |
| 3/4 | __ | Buna-N Rubber | 2.5mm | 00000000 | 0000 |
| 1 | __ | Buna-N Rubber | 3.2mm | 00000000 | 00000 |
| 1 1/4 | __ | Buna-N Rubber | 3.2mm | 00000000 | 00000 |
| 1 1/2 | __ | Buna-N Rubber | 3.2mm | 00000000 | 00000 |
| 2 | __ | Buna-N Rubber | 3.2mm | 00000000 | 00000 |
For Metric Male | |||||
| __ | M10 | Buna-N Rubber | 2mm | 00000000 | 0000 |
| __ | M12 | Buna-N Rubber | 1.5mm | 00000000 | 0000 |
| __ | M14 | Buna-N Rubber | 1.5mm | 00000000 | 0000 |
| __ | M16 | Buna-N Rubber | 1.5mm | 00000000 | 0000 |
| __ | M18 | Buna-N Rubber | 1.5mm | 00000000 | 00000 |
| __ | M20 | Buna-N Rubber | 1.5mm | 00000000 | 00000 |
| __ | M22 | Buna-N Rubber | 2mm | 00000000 | 00000 |