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Grease Fitting Style Grease Fitting Style |
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About Grease Fitting Threads
More
Grease Fittings
These fittings are also known as hydraulic grease fittings.
Zinc-plated steel fittings have mild corrosion resistance. Brass fittings are more corrosion resistant than zinc-plated steel fittings. 303 stainless steel fittings are more corrosion resistant than brass fittings and have good chemical resistance. Monel fittings are the most corrosion resistant and can be used in caustic environments, such as those involving salt water, sulfuric acid, and alkalies.
Fittings with a check valve prevent grease from leaking when pressure causes backward flow. The valve stays closed when not in use to keep out dirt and other contaminants.
PTF and NPTF (Dryseal) threads are compatible with NPT threads.
For technical drawings and 3-D models, click on a part number.
Male
Threads
Threads, Includes
Dust Cap
Pkg. | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Material | Overall Ht. | Shank Lg. | Thread Lg. | Hex Size | Max. Pressure, psi | Check Valve Type | Includes | Pkg. Qty. | 1-9 | 10-Up | |
1/8 PTF Threads | |||||||||||
| Zinc-Plated Steel | 9/16" | 15/64" | 15/64" | 7/16" | 10,000 | Ball | __ | 10 | 0000000 | 00000 | 00000 |
| Zinc-Plated Steel | 11/16" | 19/64" | 19/64" | 7/16" | 10,000 | Ball | __ | 10 | 0000000 | 0000 | 0000 |
| Zinc-Plated Steel | 31/32" | 1/4" | 1/4" | 7/16" | 10,000 | Plunger | Dust Cap | 1 | 0000000 | 0000 | 0000 |
| Zinc-Plated Steel | 1 1/4" | 25/32" | 3/16" | 7/16" | 10,000 | Ball | __ | 10 | 0000000 | 00000 | 00000 |
| Zinc-Plated Steel | 1 3/4" | 1 17/64" | 3/16" | 7/16" | 10,000 | Ball | __ | 5 | 0000000 | 0000 | 0000 |
| Zinc-Plated Steel | 2 5/8" | 2 3/16" | 3/16" | 3/8" | 10,000 | Ball | __ | 1 | 0000000 | 0000 | 0000 |
| Brass | 19/32" | 7/32" | 7/32" | 7/16" | 10,000 | Ball | __ | 5 | 0000000 | 0000 | 0000 |
| Brass | 11/16" | 19/64" | 1/4" | 7/16" | 10,000 | Ball | __ | 5 | 0000000 | 0000 | 0000 |
| 303 Stainless Steel | 3/4" | 5/16" | 3/16" | 7/16" | 10,000 | Ball | __ | 5 | 0000000 | 00000 | 0000 |
| Monel | 5/8" | 9/32" | 9/32" | 7/16" | 10,000 | Ball | __ | 1 | 0000000 | 0000 | 0000 |
| Monel | 3/4" | 5/16" | 5/16" | 7/16" | 10,000 | Ball | __ | 1 | 0000000 | 00000 | 0000 |
1/4 PTF Threads | |||||||||||
| Zinc-Plated Steel | 7/8" | 27/64" | 3/16" | 9/16" | 10,000 | Ball | __ | 10 | 0000000 | 00000 | 00000 |
| 303 Stainless Steel | 53/64" | 23/64" | 23/64" | 9/16" | 8,000 | Ball | __ | 1 | 0000000 | 0000 | 0000 |
| 303 Stainless Steel | 7/8" | 27/64" | 25/64" | 19/32" | 10,000 | Ball | __ | 1 | 0000000 | 00000 | 0000 |
Pkg. | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Material | Overall Ht. | Thread Lg. | Shank Lg. | Hex Size | Max. Pressure, psi | Check Valve Type | Pkg. Qty. | 1-9 | 10-Up | |
1/8 PTF Threads | ||||||||||
| Zinc-Plated Steel | 27/32" | 3/16" | 19/64" | 7/16" | 10,000 | Ball | 10 | 0000000 | 00000 | 00000 |
| Zinc-Plated Steel | 1 13/16" | 3/16" | 1 1/4" | 7/16" | 10,000 | Ball | 3 | 0000000 | 00000 | 00000 |
| 303 Stainless Steel | 7/8" | 7/32" | 11/32" | 7/16" | 10,000 | Ball | 1 | 0000000 | 0000 | 0000 |
| Monel | 7/8" | 11/32" | 11/32" | 7/16" | 10,000 | Ball | 1 | 0000000 | 00000 | 00000 |
1/4 PTF Threads | ||||||||||
| Zinc-Plated Steel | 15/16" | 11/32" | 11/32" | 9/16" | 8,000 | Ball | 10 | 0000000 | 00000 | 0000 |
| 303 Stainless Steel | 15/16" | 11/32" | 11/32" | 9/16" | 8,000 | Ball | 1 | 0000000 | 00000 | 00000 |
3/8 PTF Threads | ||||||||||
| Zinc-Plated Steel | 51/64" | 9/32" | 9/32" | 43/64" | 10,000 | Ball | 3 | 0000000 | 0000 | 0000 |
Pkg. | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Material | Overall Ht. | Thread Lg. | Shank Lg. | Hex Size | Max. Pressure, psi | Check Valve Type | Pkg. Qty. | 1-9 | 10-Up | |
1/8 PTF Threads | ||||||||||
| 303 Stainless Steel | 61/64" | 11/32" | 11/32" | 7/16" | 10,000 | Ball | 1 | 0000000 | 00000 | 00000 |
Pkg. | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Material | Overall Ht. | Thread Lg. | Shank Lg. | Hex Size | Max. Pressure, psi | Check Valve Type | Pkg. Qty. | 1-9 | 10-Up | |
1/8 PTF Threads | ||||||||||
| Zinc-Plated Steel | 27/32" | 19/64" | 19/64" | 7/16" | 8,000 | Ball | 10 | 0000000 | 00000 | 00000 |
| Zinc-Plated Steel | 29/32" | 9/32" | 9/32" | 7/16" | 10,000 | Ball | 10 | 0000000 | 00000 | 00000 |
| Zinc-Plated Steel | 1 7/32" | 3/16" | 9/16" | 7/16" | 10,000 | Ball | 5 | 0000000 | 00000 | 00000 |
| Zinc-Plated Steel | 2 3/4" | 3/16" | 2 1/4" | 3/8" | 10,000 | Ball | 3 | 0000000 | 00000 | 00000 |
| Monel | 61/64" | 11/32" | 11/32" | 7/16" | 10,000 | Ball | 1 | 0000000 | 00000 | 00000 |
1/4 PTF Threads | ||||||||||
| Zinc-Plated Steel | 31/32" | 11/32" | 11/32" | 9/16" | 10,000 | Ball | 5 | 0000000 | 0000 | 0000 |
Pkg. | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Material | Overall Ht. | Thread Lg. | Shank Lg. | Hex Size | Max. Pressure, psi | Check Valve Type | Pkg. Qty. | 1-9 | 10-Up | |
1/8 PTF Threads | ||||||||||
| Zinc-Plated Steel | 57/64" | 19/64" | 19/64" | 7/16" | 10,000 | Ball | 10 | 0000000 | 00000 | 00000 |
| 303 Stainless Steel | 63/64" | 17/64" | 17/64" | 7/16" | 8,000 | Ball | 1 | 0000000 | 0000 | 0000 |
1/4 PTF Threads | ||||||||||
| Zinc-Plated Steel | 1 7/64" | 11/32" | 11/32" | 9/16" | 8,000 | Ball | 10 | 0000000 | 00000 | 0000 |
| 303 Stainless Steel | 1 7/64" | 11/32" | 11/32" | 9/16" | 8,000 | Ball | 1 | 0000000 | 00000 | 00000 |
Pkg. | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Material | Overall Ht. | Thread Lg. | Shank Lg. | Square Size | Max. Pressure, psi | Check Valve Type | Pkg. Qty. | 1-9 | 10-Up | |
1/8 PTF Threads | ||||||||||
| Zinc-Plated Steel | 1 1/8" | 9/32" | 13/32" | 7/16" | 10,000 | Ball | 1 | 0000000 | 00000 | 00000 |
Pkg. | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Material | Overall Ht. | Thread Lg. | Shank Lg. | Hex Size | Max. Pressure, psi | Check Valve Type | Pkg. Qty. | 1-9 | 10-Up | |
1/8 PTF Threads | ||||||||||
| Zinc-Plated Steel | 29/32" | 19/64" | 19/64" | 7/16" | 10,000 | Ball | 10 | 0000000 | 000000 | 00000 |
| Zinc-Plated Steel | 2 3/32" | 3/16" | 1 1/4" | 7/16" | 10,000 | Ball | 1 | 0000000 | 0000 | 0000 |
| 303 Stainless Steel | 29/32" | 19/64" | 19/64" | 7/16" | 10,000 | Ball | 1 | 0000000 | 0000 | 0000 |
| Monel | 1 1/4" | 11/32" | 11/32" | 7/16" | 10,000 | Ball | 1 | 0000000 | 00000 | 00000 |
Pkg. | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Material | Overall Ht. | Thread Lg. | Shank Lg. | Hex Size | Max. Pressure, psi | Check Valve Type | Pkg. Qty. | 1-9 | 10-Up | |
1/8 PTF Threads | ||||||||||
| Zinc-Plated Steel | 27/32" | 7/32" | 7/32" | 1/2" | 10,000 | Ball | 3 | 0000000 | 00000 | 00000 |
Leakproof Grease Fittings
Keep thin grease from leaking out—the check valve in these fittings has a Buna-N seat that creates a tighter seal than check valves in other grease fittings. The valve stays closed when not in use to keep out dirt and other contaminants. Fittings are zinc-plated steel, which has mild corrosion resistance. They're also known as hydraulic grease fittings. They have PTF and NPTF (Dryseal) threads, which are compatible with NPT threads.
For technical drawings and 3-D models, click on a part number.
Flow-Stop Grease Fittings
Prevent damage caused by over-lubrication—these fittings automatically stop grease flow when pressure is within the shut-off range. They resume flow when the pressure drops below the range. An integral check valve prevents grease from leaking when pressure causes backward flow. The valve stays closed when not in use to keep out dirt and other contaminants. These fittings are also known as hydraulic grease fittings. They have PTF (Dryseal) threads, which are compatible with NPT threads.
For technical drawings and 3-D models, click on a part number.
Button-Head Grease Fittings
Often used on earth movers, mining equipment, and other heavy machinery, these fittings have a T-shaped top that holds the dispensing tip in place so it won’t pop off when adding grease. An integral check valve prevents grease from leaking when pressure causes backward flow. The valve stays closed when not in use to keep out dirt and other contaminants.
Zinc-plated steel fittings have mild corrosion resistance.
PTF and NPTF (Dryseal) threads are compatible with NPT threads.
For technical drawings and 3-D models, click on a part number.
Each | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Material | Overall Ht. | Shank Lg. | Thread Lg. | Hex Size | Head Dia. | Max. Pressure, psi | Check Valve Type | 1-9 | 10-Up | |
1/8 PTF Threads | ||||||||||
| Zinc-Plated Steel | 3/4" | 11/32" | 11/32" | 5/8" | 5/8" | 6,000 | Plunger | 0000000 | 00000 | 00000 |
Pin-Style Grease Fittings
The pins on these fittings lock with dispensing tips for pin-style fittings to create a tight seal. Their brass bodies resist corrosion. They have a check valve that prevents grease from leaking when pressure causes backward flow. The valve stays closed when not in use to keep out dirt and other contaminants.They have PTF and NPTF (Dryseal) threads, which are compatible with NPT threads. Brass fitting is more corrosion resistant than zinc-plated steel fittings.
For technical drawings and 3-D models, click on a part number.
Self-Tapping Grease Fittings for Unthreaded Holes
Ensure a secure fit in unthreaded holes—these fittings cut threads as they’re installed. Install with a hex wrench. Fittings can be driven in, but then are not pressure rated. They're zinc-plated steel for mild corrosion resistance. All have an integral check valve that prevents grease from leaking when pressure causes backward flow. The valve stays closed when not in use to keep out dirt and other contaminants. These fittings are also known as hydraulic grease fittings.
PTF (Dryseal) threads are compatible with NPT threads.
For technical drawings and 3-D models, click on a part number.
Pkg. | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| For Hole Dia. | Material | Overall Ht. | Shank Lg. | Thread Lg. | Hex Size | Max. Pressure, psi | Check Valve Type | Pkg. Qty. | 1-9 | 10-Up | |
1/8 PTF Threads | |||||||||||
| 0.373-0.38" | Zinc-Plated Steel | 5/8" | 15/64" | 15/64" | 7/16" | 10,000 | Ball | 10 | 0000000 | 00000 | 00000 |
Pkg. | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| For Hole Dia. | Material | Overall Ht. | Shank Lg. | Thread Lg. | Hex Size | Max. Pressure, psi | Check Valve Type | Pkg. Qty. | 1-9 | 10-Up | |
1/8 PTF Threads | |||||||||||
| 0.373-0.38" | Zinc-Plated Steel | 49/64" | 13/64" | 13/64" | 7/16" | 10,000 | Ball | 10 | 0000000 | 00000 | 00000 |
Pkg. | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| For Hole Dia. | Material | Overall Ht. | Shank Lg. | Thread Lg. | Hex Size | Max. Pressure, psi | Check Valve Type | Pkg. Qty. | 1-9 | 10-Up | |
1/8 PTF Threads | |||||||||||
| 0.373"-0.38" | Zinc-Plated Steel | 3/4" | 13/64" | 13/64" | 7/16" | 10,000 | Ball | 10 | 0000000 | 00000 | 00000 |
Grease Fitting Adapters
When the size or thread type of a fitting doesn't match an existing opening, use these adapters to make the connection.
Zinc-plated steel adapters have mild corrosion resistance. PTF and NPTF (Dryseal) threads are compatible with NPT threads.
For technical drawings and 3-D models, click on a part number.
