About Grease Fitting Threads
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Grease Fittings
These fittings are also known as hydraulic grease fittings.
Brass fittings are more corrosion resistant than zinc-plated steel fittings.
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. 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.
For technical drawings and 3-D models, click on a part number.
Male
Threads
Pkg. | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Material | Overall Ht. | Shank Lg. | Thread Lg. | Hex Size | Max. Pressure, psi | Check Valve Type | Specifications Met | Pkg. Qty. | 1-9 | 10-Up | |
1/8 PTF Threads | |||||||||||
| Brass | 19/32" | 7/32" | 7/32" | 7/16" | 10,000 | Ball | __ | 5 | 0000000 | 00000 | 00000 |
| Brass | 11/16" | 19/64" | 1/4" | 7/16" | 10,000 | Ball | __ | 5 | 0000000 | 0000 | 0000 |
1/4"-28 UNF Threads | |||||||||||
| Brass | 17/32" | 5/32" | 5/32" | 9/32" | 10,000 | Ball | __ | 5 | 000000 | 0000 | 0000 |
| Brass | 19/32" | 7/32" | 7/32" | 9/32" | 10,000 | Ball | __ | 5 | 000000 | 0000 | 0000 |
5/16"-24 UNF Threads | |||||||||||
| Brass | 19/32" | 7/32" | 7/32" | 11/32" | 10,000 | Ball | __ | 5 | 0000000 | 0000 | 0000 |
3/8"-24 UNF Threads | |||||||||||
| Brass | 19/32" | 7/32" | 7/32" | 7/16" | 10,000 | Ball | __ | 5 | 0000000 | 0000 | 0000 |
M6 × 1 mm Metric Threads | |||||||||||
| Brass | 14mm | 4mm | 4mm | 7mm | 10,000 | Ball | DIN 71412 | 5 | 0000000 | 0000 | 0000 |
M8 × 1 mm Metric Threads | |||||||||||
| Brass | 15mm | 5.5mm | 5.5mm | 9mm | 10,000 | Ball | DIN 71412 | 5 | 0000000 | 0000 | 0000 |
M8 × 1.25 mm Metric Threads | |||||||||||
| Brass | 15mm | 5.5mm | 5.5mm | 9mm | 10,000 | Ball | DIN 71412 | 5 | 0000000 | 0000 | 0000 |
M10 × 1 mm Metric Threads | |||||||||||
| Brass | 15mm | 5.5mm | 5.5mm | 11mm | 10,000 | Ball | DIN 71412 | 5 | 0000000 | 0000 | 0000 |
Pkg. | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Material | Overall Ht. | Thread Lg. | Shank Lg. | Hex Size | Max. Pressure, psi | Check Valve Type | Specifications Met | Pkg. Qty. | 1-9 | 10-Up | |
1/4"-28 UNF Threads | |||||||||||
| Brass | 45/64" | 7/32" | 7/32" | 11/32" | 10,000 | Ball | __ | 3 | 000000 | 00000 | 00000 |
M6 × 1 mm Metric Threads | |||||||||||
| Brass | 18mm | 5.5mm | 5.5mm | 9mm | 10,000 | Ball | DIN 71412 | 5 | 0000000 | 00000 | 00000 |
M8 × 1 mm Metric Threads | |||||||||||
| Brass | 18mm | 5.5mm | 5.5mm | 9mm | 10,000 | Ball | DIN 71412 | 1 | 0000000 | 0000 | 0000 |
M8 × 1.25 mm Metric Threads | |||||||||||
| Brass | 18mm | 5.5mm | 5.5mm | 9mm | 10,000 | Ball | DIN 71412 | 3 | 0000000 | 0000 | 0000 |
M10 × 1 mm Metric Threads | |||||||||||
| Brass | 20mm | 5.5mm | 5.5mm | 11mm | 10,000 | Ball | DIN 71412 | 3 | 0000000 | 0000 | 0000 |
Pkg. | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Material | Overall Ht. | Thread Lg. | Shank Lg. | Hex Size | Max. Pressure, psi | Check Valve Type | Specifications Met | Pkg. Qty. | 1-9 | 10-Up | |
1/4"-28 UNF Threads | |||||||||||
| Brass | 59/64" | 7/32" | 7/32" | 11/32" | 10,000 | Ball | __ | 1 | 000000 | 00000 | 00000 |
5/16"-24 UNF Threads | |||||||||||
| Brass | 59/64" | 7/32" | 7/32" | 11/32" | 10,000 | Ball | __ | 3 | 0000000 | 0000 | 0000 |
M6 × 1 mm Metric Threads | |||||||||||
| Brass | 24mm | 5.5mm | 5.5mm | 9mm | 10,000 | Ball | DIN 71412 | 5 | 0000000 | 00000 | 00000 |
M8 × 1 mm Metric Threads | |||||||||||
| Brass | 24mm | 5.5mm | 5.5mm | 9mm | 10,000 | Ball | DIN 71412 | 5 | 0000000 | 00000 | 00000 |
M8 × 1.25 mm Metric Threads | |||||||||||
| Brass | 24mm | 5.5mm | 5.5mm | 9mm | 10,000 | Ball | DIN 71412 | 1 | 0000000 | 0000 | 0000 |
M10 × 1 mm Metric Threads | |||||||||||
| Brass | 25mm | 5.5mm | 5.5mm | 11mm | 10,000 | Ball | DIN 71412 | 3 | 0000000 | 0000 | 0000 |
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.
Zinc-plated steel fittings have mild corrosion resistance. Brass fitting is more corrosion resistant than zinc-plated steel fittings.
For technical drawings and 3-D models, click on a part number.
Each | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Body Material | Pin Material | Overall Ht. | Shank Lg. | Thread Lg. | Hex Size | Max. Pressure, psi | Check Valve Type | 1-9 | 10-Up | |
1/8 PTF Threads | ||||||||||
| Brass | Zinc-Plated Steel | 31/32" | 17/64" | 17/64" | 7/16" | 8,000 | Ball | 0000000 | 00000 | 00000 |
| Brass | Copper-Plated 400 Nickel | 31/32" | 17/64" | 17/64" | 7/16" | 8,000 | Ball | 0000000 | 0000 | 0000 |
1/4 NPTF Threads | ||||||||||
| Brass | Zinc-Plated Steel | 1 3/32" | 5/16" | 5/16" | 17/32" | 8,000 | Ball | 0000000 | 0000 | 0000 |
Each | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Body Material | Pin Material | Overall Ht. | Shank Lg. | Thread Lg. | Hex Size | Max. Pressure, psi | Check Valve Type | 1-9 | 10-Up | |
1/8 NPTF Threads | ||||||||||
| Brass, Zinc-Plated Steel | Zinc-Plated Steel | 1 23/32" | 7/16" | 7/32" | 7/16" | 8,000 | Ball | 0000000 | 00000 | 00000 |
Remote-Access Grease Fittings
Access difficult-to-reach lubrications points from up to 10 ft. away. The fitting is brass, which is corrosion resistant. 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.
Tube | Each | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Thread Type | Pipe Size | Gender | Material | Fitting Material | Material | Lg., ft. | Bend Radius | Check Valve Type | For NLGI Viscosity Grade | Temp. Range, °F | 1-5 | 6-Up | |
| NPT | 1/8 | Male | Brass | Brass | Polyethylene Plastic | 10 | 2 1/2" | Ball | 0, 00, 1, 2, 3, 4 | -10° to 180° | 0000000 | 000000 | 000000 |