10-32 Grease Fittings | McMaster-Carr

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Grease Fitting Style

Thread Type

UN/UNF (SAE Straight)

Shank Length

Thread Length

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Check Valve Type

For Use With

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DFARS Specialty Metals

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Export Control Classification Number (ECCN)

EAR99

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Maximum Pressure

6,000 psi to 9,999 psi

10,000 psi or greater

Installation Clearance

Overall Width

Slot Length

6 Products

About Oil Fittings and Oil Cups

Grease Fittings

Thread these fittings into motors, bearings, engine blocks, and other machinery to create a lubrication point. They’re also known as hydraulic grease fittings.

Zinc-plated steel fittings have mild corrosion resistance. 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 with Male Threads

Straight with
Male
Threads

									Pkg.
Material	Overall Ht.	Thread Lg.	Shank Lg.	Hex Size	Max. Pressure, psi	Check Valve Type	Pkg. Qty.		1-9	10-Up
10-32 UNF Threads
Zinc-Plated Steel	15/32"	7/64"	5/64"	1/4"	10,000	Without Valve	10	0000000	00000	00000
Zinc-Plated Steel	1/2"	1/8"	1/8"	1/4"	10,000	Without Valve	10	0000000	0000	0000

Flush-Style Grease Fittings

The nipple doesn't stick out, so these fittings fit in tight spaces and won't be damaged if something knocks into them. 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.

Install Styles A, B, and D with a slotted screwdriver. 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.

										Pkg.
Style	Material	Overall Ht.	Thread Lg.	Shank Lg.	Slot Lg.	Max. Pressure, psi	Check Valve Type	Pkg. Qty.		1-9	10-Up
Straight with Male Threads
10-32 UNF Threads
A	Zinc-Plated Steel	3/8"	3/16"	15/64"	1/4"	8,000	Ball	5	000000000	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 resist corrosion better 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

Adapter

Connection
Male	Female	Material		Pkg.
Adapters
UN/UNF (SAE Straight) 10-32	NPT 1/8	360 Brass	00000000	000000

Oil Fittings

Zinc and zinc-plated steel fittings have mild corrosion resistance. Nickel-plated brass fittings are more corrosion resistant than zinc-plated brass fittings.

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 Self-Closing Hinged Cover

						Each
Material	Overall Ht.	Shank Lg.	Thread Lg.	Installation Clearance		1-9	10-Up
10-32 Male UNF Threads
Zinc-Plated Steel	9/16"	3/16"	3/16"	3/4"	0000000	000000	000000

90° Elbow with Self-Closing Hinged Cover

							Each
Material	Overall Ht.	Overall Wd.	Shank Lg.	Thread Lg.	Installation Clearance		1-9	10-Up
10-32 Male UNF Threads
Zinc	19/32"	3/4"	5/32"	5/32"	1 1/16"	0000000	000000	000000