M5 Grease Fittings | McMaster-Carr

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Grease Fitting Style

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Maximum Pressure

10,000 psi or greater

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5.5 mm

6 mm

DFARS Specialty Metals

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6 Products

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. Brass fittings resist corrosion better than zinc-plated steel fittings. 303 stainless steel fittings are more corrosion resistant than brass fittings and have good chemical resistance.

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.

Straight with Male Threads

Straight 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
M5 × 0.8 mm Metric Threads
Zinc-Plated Steel	15mm	5.5mm	5.5mm	7mm	10,000	Ball	DIN 71412	10	0000000	000000	000000
Brass	15mm	5.5mm	5.5mm	7mm	1,450	Ball	DIN 71412	5	00000000	0000	0000
303 Stainless Steel	15mm	5.5mm	5.5mm	7mm	10,000	Ball	DIN 71412	1	0000000	0000	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
M5 × 0.8 mm Metric Threads
Zinc-Plated Steel	18mm	5.5mm	5.5mm	9mm	1,450	Ball	DIN 71412	10	00000000	000000	000000

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
M5 × 0.8 mm Metric Threads
Zinc-Plated Steel	24mm	5.5mm	5.5mm	9mm	10,000	Ball	DIN 71412	10	0000000	000000	000000

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 Style C with a hex wrench.

											Pkg.
Style	Material	Overall Ht.	Thread Lg.	Shank Lg.	Hex Size	Max. Pressure, psi	Check Valve Type	Specifications Met	Pkg. Qty.		1-9	10-Up
Straight with Male Threads
M5 × 0.8 mm Metric Threads
C	Zinc-Plated Steel	9mm	6mm	6mm	7mm	1,450	Ball	DIN 3405	5	00000000	00000	00000