Brass Grease Fittings | McMaster-Carr

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	Material Material

Brass

	Body Material Body Material

Steel

Brass

	Thread Type Thread Type

	System of Measurement System of Measurement

Inch

Metric

	Thread Size Thread Size

	Pipe Size Pipe Size

1/8

1/4

	Grease Fitting Style Grease Fitting Style


Standard	Pin

	Shape Shape


Straight	45° Elbow

90° Elbow	60° Elbow

	For Use With For Use With

Grease

Oil

	Gender Gender

Male

Female

	For NLGI Viscosity Grade For NLGI Viscosity Grade

	Check Valve Type Check Valve Type

Ball

Without Valve

	Hex Size Hex Size

	Thread Length Thread Length

	Overall Height Overall Height

	Shank Length Shank Length

	DFARS (Defense Acquisition Regulations Supplement) DFARS (Defense Acquisition Regulations Supplement)

DFARS Specialty Metals
COTS-Exempt

	Thread Pitch Thread Pitch

	Shank Type Shank Type

Threaded

	RoHS (Restriction of Hazardous Substances) RoHS (Restriction of Hazardous Substances)

RoHS Compliant with
Exemptions

RoHS Compliant

	Maximum Pressure Maximum Pressure

8,000 psi

10,000 psi

Not Rated

	REACH (Registration, Evaluation, Authorization and Restriction of Chemicals) REACH (Registration, Evaluation, Authorization and Restriction of Chemicals)

REACH Compliant

	Bend Radius Bend Radius

2 1/2"

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45 Products

About Grease Fitting Threads

About Oil Fittings and Oil Cups

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-SAE 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.

Straight with Male Threads

Straight with
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
1/4"-28 UNF Threads
Brass	17/32"	5/32"	5/32"	9/32"	10,000	Ball	__	5	000000	00000	00000
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
1/8 PTF-SAE Threads
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	00000	0000

90° Elbow with Male Threads

										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	00000	0000

45° Elbow with Male Threads

										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	00000	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-SAE 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.

Straight with Male Threads

									Each
Body Material	Pin Material	Overall Ht.	Shank Lg.	Thread Lg.	Hex Size	Max. Pressure, psi	Check Valve Type		1-9	10-Up
1/4 NPTF Threads
Brass	Zinc-Plated Steel	1 3/32"	5/16"	5/16"	17/32"	8,000	Ball	0000000	00000	00000
1/8 PTF-SAE Threads
Brass	Zinc-Plated Steel	31/32"	17/64"	17/64"	7/16"	8,000	Ball	0000000	0000	0000
Brass	Copper-Plated 400 Nickel	31/32"	17/64"	17/64"	7/16"	8,000	Ball	0000000	0000	0000

45° Elbow with Male Threads

									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

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.

Brass adapters are more corrosion resistant than zinc-plated steel adapters. UNF 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.

Straight

Connection
Male	Female	Material		Each
UNF 10-32	NPT 1/8	Brass	00000000	000000
NPT 1/8	NPT 1/4	Brass	00000000	00000
NPT 1/4	BSPT 1/8	Brass	00000000	00000
BSPT 1/8	NPT 1/8	Brass	00000000	00000
BSPT 1/8	Metric M10 ×1mm	Brass	00000000	00000
BSPT 1/4	NPT 1/4	Brass	00000000	00000
Metric M8 × 1 mm	NPT 1/8	Brass	00000000	00000
Metric M8 × 1 mm	BSPT 1/8	Brass	00000000	00000
Metric M8 × 1.25 mm	NPT 1/8	Brass	00000000	00000
Metric M10 × 1.5 mm	NPT 1/8	Brass	00000000	0000
Metric M16 × 1.5 mm	NPT 1/8	Brass	00000000	00000

60° Elbow

Connection
Male	Female	Material		Each
NPT 1/8	NPT 1/8	Brass	00000000	000000

45° Elbow

Connection
Male	Female	Material		Each
NPT 1/8	NPT 1/8	Brass	00000000	000000

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.

Grease Fitting

				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

Optional Adapters

Shape	Connection	Material		Each
Straight	UNF 1/4"-28 Male × NPT 1/8 Female	Steel	0000000	00000
45° Elbow	UNF 1/4"-28 Male × NPT 1/8 Female	Steel	0000000	0000

Oil Fittings

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.

Straight with Ball Check Valve

						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	00000	00000

Straight with Self-Closing Hinged Cover

						Each
Material	Overall Ht.	Shank Lg.	Thread Lg.	Installation Clearance		1-9	10-Up
M5 × 0.8 mm Male Metric Threads
Nickel-Plated Brass	15mm	4mm	4mm	16mm	0000000	000000	000000
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	0000