About Oil Fittings and Oil Cups
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Oil Fittings for Unthreaded Holes
Drive these fittings into unthreaded holes.
Zinc and zinc-plated steel fittings have mild corrosion resistance. Nickel-plated steel fittings are more corrosion resistant than zinc and zinc-plated steel fittings.
Fittings with a check valve prevent oil from leaking when pressure causes backward flow. The valve stays closed when not in use to keep out dirt and other contaminants. Fittings with a self-closing hinged cover block contaminants from entering equipment.
Note: Fittings do not hold oil; any oil dispensed into the fittings passes into the part to be lubricated.
For technical drawings and 3-D models, click on a part number.
Each | |||||||
|---|---|---|---|---|---|---|---|
| For Hole Dia. | Material | Shank Lg. | Overall Ht. | Installation Clearance | 1-9 | 10-Up | |
| 3/16" | Zinc-Plated Steel | 1/4" | 9/32" | 7/32" | 000000 | 00000 | 00000 |
| 1/4" | Zinc-Plated Steel | 9/32" | 5/16" | 9/32" | 000000 | 0000 | 0000 |
| 5/16" | Zinc-Plated Steel | 5/16" | 3/8" | 11/32" | 000000 | 0000 | 0000 |
| 3/8" | Zinc-Plated Steel | 3/8" | 15/32" | 13/32" | 000000 | 00000 | 00000 |
| 7/16" | Zinc-Plated Steel | 15/32" | 17/32" | 15/32" | 000000 | 00000 | 00000 |
Each | |||||||
|---|---|---|---|---|---|---|---|
| For Hole Dia. | Material | Shank Lg. | Overall Ht. | Installation Clearance | 1-9 | 10-Up | |
| 3/16" | Zinc-Plated Steel | 7/32" | 15/32" | 3/4" | 0000000 | 00000 | 00000 |
| 1/4" | Zinc-Plated Steel | 5/32" | 13/32" | 11/16" | 000000 | 00000 | 0000 |
| 1/4" | Zinc-Plated Steel | 1/4" | 7/16" | 3/4" | 0000000 | 0000 | 0000 |
| 5/16" | Zinc-Plated Steel | 7/32" | 1/2" | 3/4" | 000000 | 00000 | 00000 |
| 3/8" | Zinc-Plated Steel | 7/32" | 17/32" | 25/32" | 000000 | 00000 | 00000 |
| 7/16" | Zinc-Plated Steel | 5/16" | 11/16" | 29/32" | 000000 | 00000 | 00000 |
| 1/2" | Zinc-Plated Steel | 3/8" | 13/16" | 1 7/32" | 0000000 | 00000 | 00000 |
| 3/4" | Zinc-Plated Steel | 9/16" | 1 3/16" | 1 13/16" | 0000000 | 00000 | 00000 |
| 7/8" | Zinc-Plated Steel | 1/2" | 1 1/16" | 1 13/16" | 0000000 | 00000 | 00000 |
| 1" | Zinc-Plated Steel | 19/32" | 1 5/16" | 2 3/32" | 0000000 | 00000 | 00000 |
| 1 1/4" | Zinc-Plated Steel | 13/16" | 1 11/16" | 2 7/16" | 0000000 | 00000 | 00000 |
| 6mm | Nickel-Plated Steel | 6mm | 12mm | 16mm | 0000000 | 00000 | 0000 |
| 7mm | Nickel-Plated Steel | 6mm | 14mm | 19mm | 0000000 | 0000 | 0000 |
Oil Fittings
Zinc and zinc-plated steel fittings have mild corrosion resistance. Zinc-plated brass fittings have good corrosion resistance. Nickel-plated brass fittings are more corrosion resistant than zinc-plated brass fittings.
Fitting with a check valve prevents oil from leaking when pressure causes backward flow. The valve stays closed when not in use to keep out dirt and other contaminants. Fittings with a self-closing hinged cover block contaminants from entering equipment.
UNF and UNEF threads are similar to threads on a machine screw or bolt. They require a sealant, such as an O-ring, to minimize leakage.
Note: Fittings do not hold oil; any oil dispensed into the fittings passes into the part to be lubricated.
Each | |||||||
|---|---|---|---|---|---|---|---|
| Material | Overall Ht. | Shank Lg. | Thread Lg. | Installation Clearance | 1-9 | 10-Up | |
1/4"-32 Male UNEF Threads  | |||||||
| Zinc-Plated Brass | 7/16" | 7/32" | 7/32" | 3/8" | 000000 | 000000 | 000000 |
Each | |||||||
|---|---|---|---|---|---|---|---|
| Material | Overall Ht. | Shank Lg. | Thread Lg. | Installation Clearance | 1-9 | 10-Up | |
1/8 Male NPT Threads | |||||||
| Zinc-Plated Steel | 13/16" | 1/4" | 1/4" | 13/16" | 0000000 | 000000 | 000000 |
| Zinc-Plated Steel | 7/8" | 9/32" | 9/32" | 29/32" | 0000000 | 00000 | 00000 |
| Zinc-Plated Steel | 1 5/32" | 13/32" | 13/32" | 1 7/32" | 0000000 | 00000 | 00000 |
1/4 Male NPT Threads | |||||||
| Zinc-Plated Steel | 1 5/32" | 13/32" | 13/32" | 1 7/32" | 0000000 | 00000 | 00000 |
3/8 Male NPT Threads | |||||||
| Zinc-Plated Steel | 1 9/32" | 3/8" | 3/8" | 1 7/32" | 0000000 | 00000 | 00000 |
1/2 Male NPT Threads | |||||||
| Zinc-Plated Steel | 1 7/16" | 9/16" | 9/16" | 1 7/16" | 0000000 | 00000 | 00000 |
10-32 Male UNF Threads | |||||||
| Zinc-Plated Steel | 9/16" | 3/16" | 3/16" | 3/4" | 0000000 | 00000 | 00000 |
1/4"-32 Male UNEF Threads | |||||||
| Zinc-Plated Steel | 9/16" | 5/32" | 5/32" | 11/16" | 0000000 | 00000 | 00000 |
| Zinc-Plated Steel | 9/16" | 3/16" | 3/16" | 3/4" | 0000000 | 00000 | 00000 |
| Zinc-Plated Steel | 3/4" | 1/4" | 1/4" | 3/4" | 0000000 | 00000 | 00000 |
5/16"-32 Male UNEF Threads | |||||||
| Zinc-Plated Steel | 27/32" | 1/4" | 1/4" | 13/16" | 0000000 | 00000 | 00000 |
M6 × 1 mm Male Metric Threads | |||||||
| Nickel-Plated Brass | 15mm | 5mm | 5mm | 19mm | 0000000 | 00000 | 00000 |
M8 × 1.25 mm Male Metric Threads | |||||||
| Nickel-Plated Brass | 16.5mm | 5mm | 5mm | 19mm | 0000000 | 00000 | 00000 |
1/4 Female NPT Threads | |||||||
| Zinc-Plated Steel | 1" | 7/16" | 7/16" | 1 7/16" | 0000000 | 00000 | 00000 |
1 Female NPT Threads | |||||||
| Zinc-Plated Steel | 1 9/16" | 3/4" | 3/4" | 2 9/32" | 0000000 | 00000 | 00000 |
Each | ||||||||
|---|---|---|---|---|---|---|---|---|
| Material | Overall Ht. | Overall Wd. | Shank Lg. | Thread Lg. | Installation Clearance | 1-9 | 10-Up | |
1/8 Male NPT Threads | ||||||||
| Zinc | 25/32" | 1 3/32" | 1/4" | 1/4" | 1 5/16" | 0000000 | 000000 | 000000 |
10-32 Male UNF Threads | ||||||||
| Zinc | 19/32" | 3/4" | 5/32" | 5/32" | 1 1/16" | 0000000 | 00000 | 00000 |
1/4"-32 Male UNEF Threads | ||||||||
| Zinc | 19/32" | 3/4" | 3/16" | 3/16" | 1 1/16" | 0000000 | 00000 | 00000 |
5/16"-32 Male UNEF Threads | ||||||||
| Zinc | 25/32" | 1 3/32" | 3/16" | 3/16" | 1 5/16" | 0000000 | 00000 | 00000 |
Quick-Install Pressure Test Fittings
 |  NPT Female Inlet × NPT Male Outlet Adapter with Intermittent Swivel |  NPT Male Inlet × NPT Female Outlet Adapter |
 NPT Male Inlet × NPT Female Outlet Adapter with Intermittent Swivel |  NPT Male Inlet Plug |
Thread these fittings onto your testing equipment by hand for a secure connection in testing applications—no tools, tape, or sealant required. Use them with gauges and other equipment as a temporary connection. When pressure is applied, the O-ring on the outlet presses against the testing equipment, creating a tight seal.
Adapters with intermittent swivel rotate 360° until tightened for easy installation.
For technical drawings and 3-D models, click on a part number.
| Pipe Size | Max. Pressure, psi | Temperature Range, °F | Gasket Material | For Use With | Each | |
NPT Female Inlet × NPT Male Outlet Adapter with Intermittent Swivel | ||||||
|---|---|---|---|---|---|---|
416 Stainless Steel | ||||||
| 1/8 × 1/8 | 5,000 | -65° to 212° | Polyurethane Rubber | Air, Argon, Diesel Fuel, Fuel Oil, Gasoline, Hydraulic Fluid, Hydraulic Fluid (Petroleum Based), Natural Gas, Nitrogen, Oxygen, Water | 0000000 | 0000000 |
| 1/4 × 1/4 | 5,000 | -65° to 212° | Polyurethane Rubber | Air, Argon, Diesel Fuel, Fuel Oil, Gasoline, Hydraulic Fluid, Hydraulic Fluid (Petroleum Based), Natural Gas, Nitrogen, Oxygen, Water | 0000000 | 000000 |
| 3/8 × 3/8 | 4,000 | -65° to 212° | Polyurethane Rubber | Air, Argon, Diesel Fuel, Fuel Oil, Gasoline, Hydraulic Fluid, Hydraulic Fluid (Petroleum Based), Natural Gas, Nitrogen, Oxygen, Water | 0000000 | 000000 |
| 1/2 × 1/2 | 4,000 | -65° to 212° | Polyurethane Rubber | Air, Argon, Diesel Fuel, Fuel Oil, Gasoline, Hydraulic Fluid, Hydraulic Fluid (Petroleum Based), Natural Gas, Nitrogen, Oxygen, Water | 0000000 | 000000 |
| 3/4 × 3/4 | 4,000 | -65° to 212° | Polyurethane Rubber | Air, Argon, Diesel Fuel, Fuel Oil, Gasoline, Hydraulic Fluid, Hydraulic Fluid (Petroleum Based), Natural Gas, Nitrogen, Oxygen, Water | 0000000 | 000000 |
| 1 × 1 | 4,000 | -65° to 212° | Polyurethane Rubber | Air, Argon, Diesel Fuel, Fuel Oil, Gasoline, Hydraulic Fluid, Hydraulic Fluid (Petroleum Based), Natural Gas, Nitrogen, Oxygen, Water | 0000000 | 000000 |
NPT Male Inlet × NPT Female Outlet Adapter | ||||||
416 Stainless Steel | ||||||
| 1/8 × 1/8 | 5,000 | -65° to 212° | Polyurethane Rubber | Air, Argon, Diesel Fuel, Fuel Oil, Gasoline, Hydraulic Fluid, Hydraulic Fluid (Petroleum Based), Natural Gas, Nitrogen, Oxygen, Water | 0000000 | 000000 |
| 1/4 × 1/4 | 5,000 | -65° to 212° | Polyurethane Rubber | Air, Argon, Diesel Fuel, Fuel Oil, Gasoline, Hydraulic Fluid, Hydraulic Fluid (Petroleum Based), Natural Gas, Nitrogen, Oxygen, Water | 0000000 | 000000 |
| 3/8 × 3/8 | 4,000 | -65° to 212° | Polyurethane Rubber | Air, Argon, Diesel Fuel, Fuel Oil, Gasoline, Hydraulic Fluid, Hydraulic Fluid (Petroleum Based), Natural Gas, Nitrogen, Oxygen, Water | 0000000 | 000000 |
| 1/2 × 1/2 | 4,000 | -65° to 212° | Polyurethane Rubber | Air, Argon, Diesel Fuel, Fuel Oil, Gasoline, Hydraulic Fluid, Hydraulic Fluid (Petroleum Based), Natural Gas, Nitrogen, Oxygen, Water | 0000000 | 000000 |
| 3/4 × 3/4 | 4,000 | -65° to 212° | Polyurethane Rubber | Air, Argon, Diesel Fuel, Fuel Oil, Gasoline, Hydraulic Fluid, Hydraulic Fluid (Petroleum Based), Natural Gas, Nitrogen, Oxygen, Water | 0000000 | 000000 |
| 1 × 1 | 4,000 | -65° to 212° | Polyurethane Rubber | Air, Argon, Diesel Fuel, Fuel Oil, Gasoline, Hydraulic Fluid, Hydraulic Fluid (Petroleum Based), Natural Gas, Nitrogen, Oxygen, Water | 0000000 | 000000 |
NPT Male Inlet × NPT Female Outlet Adapter with Intermittent Swivel | ||||||
416 Stainless Steel | ||||||
| 1/8 × 1/8 | 5,000 | -65° to 212° | Polyurethane Rubber | Air, Argon, Diesel Fuel, Fuel Oil, Gasoline, Hydraulic Fluid, Hydraulic Fluid (Petroleum Based), Natural Gas, Nitrogen, Oxygen, Water | 0000000 | 000000 |
| 1/4 × 1/4 | 5,000 | -65° to 212° | Polyurethane Rubber | Air, Argon, Diesel Fuel, Fuel Oil, Gasoline, Hydraulic Fluid, Hydraulic Fluid (Petroleum Based), Natural Gas, Nitrogen, Oxygen, Water | 0000000 | 000000 |
| 3/8 × 3/8 | 4,000 | -65° to 212° | Polyurethane Rubber | Air, Argon, Diesel Fuel, Fuel Oil, Gasoline, Hydraulic Fluid, Hydraulic Fluid (Petroleum Based), Natural Gas, Nitrogen, Oxygen, Water | 0000000 | 000000 |
| 1/2 × 1/2 | 4,000 | -65° to 212° | Polyurethane Rubber | Air, Argon, Diesel Fuel, Fuel Oil, Gasoline, Hydraulic Fluid, Hydraulic Fluid (Petroleum Based), Natural Gas, Nitrogen, Oxygen, Water | 0000000 | 000000 |
| 3/4 × 3/4 | 4,000 | -65° to 212° | Polyurethane Rubber | Air, Argon, Diesel Fuel, Fuel Oil, Gasoline, Hydraulic Fluid, Hydraulic Fluid (Petroleum Based), Natural Gas, Nitrogen, Oxygen, Water | 0000000 | 000000 |
| 1 × 1 | 4,000 | -65° to 212° | Polyurethane Rubber | Air, Argon, Diesel Fuel, Fuel Oil, Gasoline, Hydraulic Fluid, Hydraulic Fluid (Petroleum Based), Natural Gas, Nitrogen, Oxygen, Water | 0000000 | 000000 |
NPT Male Inlet Plug | ||||||
416 Stainless Steel | ||||||
| 1/8 | 5,000 | -65° to 212° | Polyurethane Rubber | Air, Argon, Diesel Fuel, Fuel Oil, Gasoline, Hydraulic Fluid, Hydraulic Fluid (Petroleum Based), Natural Gas, Nitrogen, Oxygen, Water | 0000000 | 000000 |
| 1/4 | 5,000 | -65° to 212° | Polyurethane Rubber | Air, Argon, Diesel Fuel, Fuel Oil, Gasoline, Hydraulic Fluid, Hydraulic Fluid (Petroleum Based), Natural Gas, Nitrogen, Oxygen, Water | 0000000 | 000000 |
| 3/8 | 4,000 | -65° to 212° | Polyurethane Rubber | Air, Argon, Diesel Fuel, Fuel Oil, Gasoline, Hydraulic Fluid, Hydraulic Fluid (Petroleum Based), Natural Gas, Nitrogen, Oxygen, Water | 0000000 | 000000 |
| 1/2 | 4,000 | -65° to 212° | Polyurethane Rubber | Air, Argon, Diesel Fuel, Fuel Oil, Gasoline, Hydraulic Fluid, Hydraulic Fluid (Petroleum Based), Natural Gas, Nitrogen, Oxygen, Water | 0000000 | 000000 |
| 3/4 | 4,000 | -65° to 212° | Polyurethane Rubber | Air, Argon, Diesel Fuel, Fuel Oil, Gasoline, Hydraulic Fluid, Hydraulic Fluid (Petroleum Based), Natural Gas, Nitrogen, Oxygen, Water | 0000000 | 000000 |
| 1 | 4,000 | -65° to 212° | Polyurethane Rubber | Air, Argon, Diesel Fuel, Fuel Oil, Gasoline, Hydraulic Fluid, Hydraulic Fluid (Petroleum Based), Natural Gas, Nitrogen, Oxygen, Water | 0000000 | 000000 |
Pressure Test Fittings
Check pressure without permanently installing a gauge. Fittings have an NPT male connection for installation in your pipe or tank. Wrench-tighten the fitting onto your equipment, then insert the gauge adapter (sold separately) into the fitting. Connect gauge adapters to gauges with 1/4 pipe size NPT male threads.
Plugs | Gauge Adapters | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Pipe Size | Thread Size | Thread Pitch, mm | Max. Pressure, psi | Gasket Material | Ht. | For Use With | Each | Each | ||
NPT Male × Metric Male | ||||||||||
Steel | ||||||||||
| 1/8 | M16 | 2 | 5,800 | Fluoroelastomer Rubber | 1 1/2" | Air, Argon, Diesel Fuel, Fuel Oil, Gasoline, Hydraulic Fluid, Hydraulic Fluid (Petroleum Based), Natural Gas, Nitrogen, Water | 0000000 | 000000 | 0000000 | 000000 |
| 1/4 | M16 | 2 | 5,800 | Fluoroelastomer Rubber | 1 1/2" | Air, Argon, Diesel Fuel, Fuel Oil, Gasoline, Hydraulic Fluid, Hydraulic Fluid (Petroleum Based), Natural Gas, Nitrogen, Water | 0000000 | 00000 | 0000000 | 00000 |
Oil Cups
A built-in reservoir allows oil to gradually pass through to equipment, reducing time spent on manual lubrication. Flow rate depends on temperature.
Use 90° elbow cups for side-mount applications and where vertical space is limited.
Oil cups with wick feed have a wick that extends through the threaded connection of the cup and keeps the bearing dust-free and lubricated, even after the oil cup is drained.
For technical drawings and 3-D models, click on a part number.
Each | ||||||||
|---|---|---|---|---|---|---|---|---|
| Cap., fl. oz. | Overall Ht. | Installation Clearance | Thread Lg. | Bowl Material | Pressure Regulation | 1-9 | 10-Up | |
1/8 NPT Male Outlet | ||||||||
| 1/16 | 1 1/2" | 1 7/32" | 5/16" | Zinc-Plated Steel | Nonvented | 0000000 | 000000 | 000000 |
| 1/8 | 1 21/32" | 1 7/16" | 5/16" | Zinc-Plated Steel | Nonvented | 0000000 | 00000 | 00000 |
| 5/16 | 1 29/32" | 1 13/16" | 5/16" | Zinc-Plated Steel | Nonvented | 0000000 | 00000 | 00000 |
1/4 NPT Male Outlet | ||||||||
| 5/16 | 2" | 1 13/16" | 3/8" | Zinc-Plated Steel | Nonvented | 0000000 | 00000 | 00000 |
3/8 NPT Male Outlet | ||||||||
| 1 5/16 | 2 9/16" | 2 7/16" | 3/8" | Zinc-Plated Steel | Nonvented | 0000000 | 000000 | 000000 |
Each | ||||||||
|---|---|---|---|---|---|---|---|---|
| Cap., fl. oz. | Overall Ht. | Installation Clearance | Thread Lg. | Bowl Material | Pressure Regulation | 1-9 | 10-Up | |
1/8 NPT Male Outlet | ||||||||
| 1/16 | 2" | 1 7/32" | 3/8" | Zinc-Plated Steel | Nonvented | 0000000 | 000000 | 000000 |
| 1/8 | 2 5/32" | 1 7/16" | 11/32" | Zinc-Plated Steel | Nonvented | 0000000 | 00000 | 00000 |
| 5/8 | 2 13/32" | 2" | 3/8" | Zinc-Plated Steel | Nonvented | 0000000 | 00000 | 00000 |
1/4 NPT Male Outlet | ||||||||
| 5/8 | 2 15/32" | 2" | 3/8" | Zinc-Plated Steel | Nonvented | 0000000 | 00000 | 00000 |
Overall | Each | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| Cap., fl. oz. | Ht. | Wd. | Installation Clearance | Thread Lg. | Bowl Material | Pressure Regulation | 1-9 | 10-Up | |
1/8 NPT Male Outlet | |||||||||
| 1/8 | 15/16" | 1 11/32" | 1 19/32" | 5/16" | Zinc-Plated Steel | Nonvented | 0000000 | 000000 | 000000 |
| 1/2 | 1 7/16" | 1 11/16" | 2 5/8" | 5/16" | Zinc-Plated Steel | Nonvented | 0000000 | 00000 | 00000 |
1/4 NPT Male Outlet | |||||||||
| 1/2 | 1 7/16" | 1 15/16" | 2 1/2" | 7/16" | Zinc-Plated Steel | Nonvented | 0000000 | 00000 | 00000 |
3/8 NPT Male Outlet | |||||||||
| 1 7/8 | 2 1/16" | 2 13/32" | 4" | 7/16" | Zinc-Plated Steel | Nonvented | 0000000 | 00000 | 00000 |
1/2 NPT Male Outlet | |||||||||
| 3 3/4 | 2 1/16" | 3 1/2" | 4" | 9/16" | Zinc-Plated Steel | Nonvented | 0000000 | 000000 | 000000 |
Pressure Gauges for Hydraulic Jacks
Monitor hydraulic oil pressure levels to guard against overload. These gauges are liquid filled to reduce needle vibration and include an adapter to mount the gauge in line with the hose.
For technical drawings and 3-D models, click on a part number.