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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Liquid Nitrogen Hose with Threaded Fittings
- Temperature Range: -320° to 1,500° F
- Maximum Vacuum: 29" of Hg @ 72° F
- Material: 321 Stainless Steel with 304 Stainless Steel Braid
- Female Fittings Swivel Until Tightened
Transfer liquid nitrogen across a wide temperature range with this hose. Hose comes cleaned, capped, and bagged to meet CGA (Compressed Gas Association) G4.1. The braid provides good flexibility in high-vibration applications. Female fittings swivel until tightened for easy installation.
Hose with Cover—A cover surrounds the braid to protect it from damage.
| Pipe Size  | Thread Size | ID | OD | Bend Radius | Max. Pressure | 1 1/2 ft. | 3 ft. | 4 ft. | 6 ft. | 8 ft. | 10 ft. | 12 ft. | |
304 Stainless Steel NPT Male × 316 Stainless Steel 45° Flared UNF Female | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 3/8 | 3/4"-16 | 1/2" | 13/16" | 4 7/8" | 1,160 psi @ 72° F | 00000000 | |||||||
316 Stainless Steel 45° Flared UNF Female × 316 Stainless Steel 45° Flared UNF Female | |||||||||||||
| __ | 3/4"-16 × 3/4"-16 | 1/2" | 13/16" | 4 7/8" | 1,160 psi @ 72° F | 00000000 | |||||||
316 Stainless Steel NPT Male × 316 Stainless Steel 45° Flared UNF Female | |||||||||||||
| 1/2 | 3/4"-16 | 1/2" | 13/16" | 4 7/8" | 1,160 psi @ 72° F | 00000000 | |||||||
| Pipe Size | Thread Size | ID | OD | Bend Radius | Max. Pressure | Cover Material | 1 1/2 ft. | 3 ft. | 4 ft. | 6 ft. | 8 ft. | 10 ft. | 12 ft. | |
304 Stainless Steel NPT Male × 316 Stainless Steel 45° Flared UNF Female | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 3/8 | 3/4"-16 | 1/2" | 15/16" | 4 7/8" | 1,160 psi @ 72° F | 304 Stainless Steel | 00000000 | |||||||
316 Stainless Steel 45° Flared UNF Female × 316 Stainless Steel 45° Flared UNF Female | ||||||||||||||
| __ | 3/4"-16 × 3/4"-16 | 1/2" | 15/16" | 4 7/8" | 1,160 psi @ 72° F | 304 Stainless Steel | 00000000 | |||||||
316 Stainless Steel NPT Male × 316 Stainless Steel 45° Flared UNF Female | ||||||||||||||
| 1/2 | 3/4"-16 | 1/2" | 15/16" | 4 7/8" | 1,160 psi @ 72° F | 304 Stainless Steel | 00000000 | |||||||
Touch-Safe Insulated Cryogenic Hose with Threaded Fittings
- Temperature Range: -325° to 200° F
- Material: 321 Stainless Steel with 304 Stainless Steel Cover
- Both Fittings Swivel Until Tightened
To maintain the temperature of liquids as cold as -325° F, this hose has vacuum insulation and a reflective barrier. This prevents heat transfer in the same way a thermos does, so the exterior of the hose won’t freeze or form condensation. Even when used with liquid argon, liquid carbon dioxide, liquid methane, and liquid nitrogen, this hose is safe to handle. It meets strict ASME design and testing standards for process piping systems.
This hose comes ready to use—you don’t need to create the vacuum yourself. To install, thread the fittings on this hose onto a freezer or other equipment in your plant or laboratory. Both ends swivel until tightened, so you don’t need to rotate the entire hose during installation. With ribbed insulation inside and spiral reinforcement outside, this hose won’t crack or leak when you bend and flex it around obstacles. The cover is 304 stainless steel, which stands up to wear and tear and won’t corrode from mild chemicals and water.
For technical drawings and 3-D models, click on a part number.
Tube Connection | |||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| CGA Number | For Tube OD | Thread Size | Pipe Size | ID | OD | Bend Radius | Max. Pressure | Specifications Met | 3 ft. | 4 ft. | 6 ft. | 8 ft. | 10 ft. | 12 ft. | |
316 Stainless Steel 37°, 45° Flared UN/UNF (JIC) Female × 316 Stainless Steel Threaded NPT Male | |||||||||||||||
| 295 | 1/4" | 7/16"-20 | 1/4 | 1/4" | 1 1/8" | 6 1/2" | 150 psi @ 72° F | ASME B31.3 | 0000000 | ||||||
| 295 | 3/8" | 9/16"-18 | 3/8 | 3/8" | 1 3/8" | 7 1/2" | 150 psi @ 72° F | ASME B31.3 | 0000000 | ||||||
| 295 | 1/2" | 3/4"-16 | 1/2 | 1/2" | 1 11/16" | 8 1/2" | 150 psi @ 72° F | ASME B31.3 | 0000000 | ||||||
Air Conditioning Hose
- Temperature Range: -20° to 180° F
- Material: Kevlar with Buna-N Rubber Cover
- Color: Black, Blue, Red, or Yellow
Use hose to charge and test your air conditioning units.
| Thread Size | ID | OD | Max. Pressure | Choose a Color | Each | |
3-ft. Lengths | ||||||
|---|---|---|---|---|---|---|
Brass Threaded UNF Female × Brass 45° Flared UNF Female | ||||||
| 7/16"-20 × 7/16"-20 | 3/16" | 1/2" | 800 psi @ 72° F | 000000 | 000000 | |
5-ft. Lengths | ||||||
Brass Threaded UNF Female × Brass 45° Flared UNF Female | ||||||
| 7/16"-20 × 7/16"-20 | 3/16" | 1/2" | 800 psi @ 72° F | 000000 | 00000 | |
6-ft. Lengths | ||||||
Brass Threaded UNF Female × Brass 45° Flared UNF Female | ||||||
| 7/16"-20 × 7/16"-20 | 3/16" | 1/2" | 800 psi @ 72° F | 000000 | 00000 | |
Brass Threaded UNF Female × Brass 45° Flared Ball Valve UNF Female | ||||||
| 7/16"-20 × 7/16"-20 | 3/16" | 1/2" | 800 psi @ 72° F | 0000000 | 00000 | |
Air Conditioning Hose Sets
- Temperature Range: -20° to 180° F
- Material: Kevlar with Buna-N Rubber Cover
- Color: Blue, Red, and Yellow
Each hose is a different color so you can differentiate your lines.
3-ft. Lengths | 5-ft. Lengths | 6-ft. Lengths | |||||||
|---|---|---|---|---|---|---|---|---|---|
| Thread Size | ID | OD | Max. Pressure | Each | Each | Each | |||
Brass Threaded UNF Female × Brass 45° Flared UNF Female | |||||||||
| 7/16"-20 × 7/16"-20 | 3/16" | 1/2" | 800 psi @ 72° F | 0000000 | 000000 | 0000000 | 000000 | 0000000 | 000000 |
Brass Threaded UNF Female × Brass 45° Flared Ball Valve UNF Female | |||||||||
| 7/16"-20 × 7/16"-20 | 3/16" | 1/2" | 800 psi @ 72° F | 000000 | 00 | 000000 | 00 | 0000000 | 000000 |
Metal Barbed Hose Fittings for Air and Water
Slide the barbed end into rubber hose and secure with the appropriate clamp or crimp-on hose ferrule.
Brass fittings are softer than other metal fittings, so they’re easier to thread together. Plain brass fittings have good corrosion resistance. Fittings with a threaded end are also known as hose nipples.
Fittings with a 45° flared end are also known as refrigeration and SAE fittings.
For technical drawings and 3-D models, click on a part number.
- Maximum Pressure: 250 psi @ 72° F
- Temperature Range: -40° to 160° F
- Attachment Type: Use Crimp-On Hose Ferrules, except For 1/2" Hose ID: Use Band-and-Buckle Clamps
- Specifications Met: SAE J476
Metal Push-On Barbed Hose Fittings for Air and Water
Fittings have sharper barbs than standard barbed hose fittings to grip rubber push-on hose with no clamps or ferrules required. The more you pull on the fittings, the tighter the hose will grip.
Brass fittings are softer than other metal fittings, so they’re easier to thread together. They have good corrosion resistance.
Fittings with a flared end meet JIC or SAE standards for dimensions. Fittings with a 45° flared end are also known as refrigeration and SAE fittings. Fittings with a female 37° and 45° flared end have a dual-angle seat that accepts both 37° and 45° flared fittings.
The optional installation tool (sold separately) allows you to connect large quantities of barbed fittings to push-on hose. Use the built-in cutter to squarely cut the hose without fraying. Next, lubricate either the push-on hose, fitting or both. Then, clamp the hose into the tool’s vise and apply light pressure on the handle to drive into the fitting.
Note: To ensure proper connection, the barbed end has to be pushed in all the way, with the hose end concealed by the ring.
For technical drawings and 3-D models, click on a part number.
- Maximum Pressure: 300 psi @ 72° F
- Temperature Range: -20° to 150° F
- Specifications Met: SAE J512
Adapters | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
Ring Stop | Replacement Ring Stops | |||||||||
| For Hose ID | For Tube OD | Thread Size | Material | Color | Pkg. Qty. | Pkg. | Pkg. Qty. | Pkg. | ||
Brass | ||||||||||
| 1/4" | 1/4" | 7/16"-20 | Plastic | Yellow | 5 | 00000000 | 000000 | 25 | 000000000 | 00000 |
| 1/4" | 5/16" | 1/2"-20 | Plastic | Yellow | 5 | 00000000 | 00000 | 25 | 000000000 | 0000 |
| 3/8" | 3/8" | 5/8"-18 | Plastic | Yellow | 1 | 00000000 | 0000 | 25 | 000000000 | 0000 |
| 1/2" | 1/2" | 3/4"-16 | Plastic | Yellow | 2 | 00000000 | 00000 | 25 | 00000000 | 0000 |
| 3/4" | 3/4" | 1 1/16"-14 | Plastic | Yellow | 1 | 00000000 | 00000 | 25 | 000000000 | 0000 |
- Maximum Pressure: 300 psi @ 72° F
- Temperature Range: -20° to 150° F
- Specifications Met: SAE J512, SAE J514
Adapters | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
Ring Stop | Replacement Ring Stops | |||||||||
| For Hose ID | For Tube OD | Thread Size | Material | Color | Pkg. Qty. | Pkg. | Pkg. Qty. | Pkg. | ||
Brass | ||||||||||
| 1/4" | 1/4" | 7/16"-20 | Plastic | Yellow | 5 | 00000000 | 000000 | 25 | 000000000 | 00000 |
| 1/4" | 5/16" | 1/2"-20 | Plastic | Yellow | 5 | 00000000 | 00000 | 25 | 000000000 | 0000 |
| 3/8" | 5/16" | 1/2"-20 | Plastic | Yellow | 1 | 000000000 | 0000 | 25 | 000000000 | 0000 |
| 3/8" | 1/2" | 3/4"-16 | Plastic | Yellow | 2 | 00000000 | 00000 | 25 | 000000000 | 0000 |
| 1/2" | 1/2" | 3/4"-16 | Plastic | Yellow | 2 | 00000000 | 00000 | 25 | 00000000 | 0000 |
| 1/2" | 5/8" | 7/8"-14 | Plastic | Yellow | 2 | 00000000 | 00000 | 25 | 00000000 | 0000 |
| 5/8" | 5/8" | 7/8"-14 | Plastic | Yellow | 2 | 00000000 | 00000 | 25 | 00000000 | 0000 |
| 3/4" | 5/8" | 7/8"-14 | Plastic | Yellow | 1 | 000000000 | 00000 | 25 | 000000000 | 0000 |
Mounting Hole | ||||||||
|---|---|---|---|---|---|---|---|---|
| For Hose ID Range | Lg. | Ht. | Dp. | Dia. | No. of | Mounting Fasteners Included | Each | |
| 1/4" to 3/4" | 13 1/2" | 7" | 2 3/8" | 5/8" | 4 | No | 00000000 | 0000000 |
Screw-On Hose Fittings for D.O.T. Hose
Create or repair D.O.T. hose assemblies in the field with just a wrench and a vise, no crimper required. To install, separate the two pieces of these fittings. Screw the hose-end portion onto your hose, then thread the nipple portion into the hose-end portion. When assembled, 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 on a new one. All meet labeling and performance requirements for motor vehicle brake hose fittings.
Fittings with a flared tube connection swivel 360° until tightened for easy installation. Those with a 45° flared end are also known as SAE fittings.
For technical drawings and 3-D models, click on a part number.
- Maximum Pressure: See table
- Temperature Range: -40° to 300° F
- Specifications Met: D.O.T. FMVSS 106, SAE J517 100R5
- For Hose Manufacturer Series: Parker 201 SAE J517 100R5
For Hose | ||||||||
|---|---|---|---|---|---|---|---|---|
| ID | OD | For Tube OD | Thread Size | Thread Type | Dash Size | Max. Pressure | Each | |
Zinc-Plated Steel—Parker 20 Series | ||||||||
| 3/16" | 1/2" | 1/4" | 7/16"-20 | UN/UNF (SAE 45°) | 04 | 3,000 psi @ 72° F | 0000000 | 000000 |
| 5/16" | 11/16" | 3/8" | 5/8"-18 | UN/UNF (SAE 45°) | 06 | 2,250 psi @ 72° F | 0000000 | 00000 |
| 13/32" | 3/4" | 1/2" | 3/4"-16 | UN/UNF (SAE 45°) | 08 | 2,000 psi @ 72° F | 0000000 | 00000 |
| 1/2" | 15/16" | 5/8" | 7/8"-14 | UN/UNF (SAE 45°) | 10 | 1,750 psi @ 72° F | 0000000 | 00000 |