Flush Zerk Fittings | McMaster-Carr

Filter by

Product Family

Grease Fittings

Grease Gun Accessory Kits

Grease Gun Tip Adapters

Grease Gun Tips

Grease Guns

Grease Fitting Style

Flush

System of Measurement

Thread Size

Thread Type

Shape

Pipe Size

Hole Diameter

Material

Thread Length

For Use With

Gender

Check Valve Type

Overall Height

Component

Dispensing Tip Adapter

Dispensing Tip Extension

Height

Thread Pitch

Hex Size

Shank Type

Head Diameter

Fitting Connection

Shank Length

RoHS

Compliant with Exemptions

Not Compliant

Export Control Classification Number (ECCN)

EAR99

U.S.–Mexico–Canada Agreement (USMCA) Qualifying

Yes

REACH

Compliant

Not Compliant

DFARS Specialty Metals

Exempt

Forward

How can we improve?

Help me decide (beta)

51 Products

...

Flush-Style Grease Fittings


Male Straight Style A	Male Straight Style B	Male Straight Style C	Male Straight Style D

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.

Straight with Male Thread


Style A	Style B	Style C	Style D

NPTF Thread—NPTF (Dryseal) threads are compatible with NPT threads.

UNF Thread—UNF threads are similar to threads on a machine screw or bolt. They require a sealant, such as an O-ring, to minimize leakage.

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

Style C—Install Style C with a hex wrench.

Zinc-Plated Steel—Zinc-plated steel fittings have mild corrosion resistance.

303 Stainless Steel—303 stainless steel fittings are more corrosion resistant than zinc-plated steel fittings and have good chemical resistance.

													Pkg.
	Style	Material	Overall Ht.	Thread Lg.	Shank Lg.	Slot Lg.	Hex Size	Max. Pressure, psi	Check Valve Type	Specs. Met	Pkg. Qty.		1-9	10-Up
1/8 NPTF Thread



		A	Zinc-Plated Steel	23/64"	19/64"	23/64"	13/32"	—	10,000	Ball	—	5	10595K11	00000	00000


		B	Zinc-Plated Steel	17/32"	17/32"	17/32"	3/8"	—	10,000	Ball	—	3	10595K12	0000	0000


		1/4 NPTF Thread



				B	Zinc-Plated Steel	9/16"	9/16"	9/16"	35/64"	—	10,000	Ball	—	1	10595K13	0000	0000


				3/8 NPTF Thread



						C	Zinc-Plated Steel	49/64"	31/64"	39/64"	—	3/4"	10,000	Ball	—	1	10595K21	00000	00000


						3/4 NPTF Thread



								C	Zinc-Plated Steel	7/8"	29/64"	39/64"	—	1 1/16"	10,000	Ball	—	1	10595K23	00000	00000


								1/2 NPT Thread



										C	Zinc-Plated Steel	55/64"	7/16"	39/64"	—	7/8"	10,000	Ball	—	1	10595K22	00000	00000


										10-32 UNF Thread



												A	Zinc-Plated Steel	23/64"	3/16"	7/32"	1/4"	—	8,000	Ball	—	5	10595K331	0000	0000


												1/4"-28 UNF Thread



														C	Zinc-Plated Steel	13/32"	19/64"	19/64"	—	5/16"	10,000	Ball	—	5	10595K14	0000	0000


														1/8 BSPP Thread



																D	Zinc-Plated Steel	10 mm	10 mm	10 mm	9.7 mm	—	1,450	Ball	DIN 3405	5	10595K32	00000	00000


																1/4 BSPP Thread



																		D	Zinc-Plated Steel	13 mm	11 mm	13 mm	13.2 mm	—	1,450	Ball	DIN 3405	1	10595K33	00000	0000


3/8 BSPP Thread



																		C	Zinc-Plated Steel	14.5 mm	9 mm	9 mm	—	17 mm	1,450	Ball	DIN 3405	3	10595K34	00000	00000


																		M5 × 0.8 mm Metric Thread



		C	Zinc-Plated Steel																	9 mm	6 mm	6 mm	—	7 mm	1,450	Ball	DIN 3405	5	10595K35	0000	0000


		M6 × 0.75 mm Metric Thread



				C																Zinc-Plated Steel	9 mm	6 mm	6 mm	—	7 mm	1,450	Ball	DIN 3405	5	10595K36	0000	0000


				M6 × 1 mm Metric Thread



																				C	Zinc-Plated Steel	9 mm	6 mm	6 mm	—	7 mm	10,000	Ball	DIN 3405	5	2421K31	0000	0000


						C	303 Stainless Steel													9 mm	6 mm	6 mm	—	7 mm	1,450	Ball	DIN 3405	1	10595K37	0000	0000


						M8 × 1 mm Metric Thread



								C	Zinc-Plated Steel											9.5 mm	6.5 mm	6.5 mm	—	9 mm	10,000	Ball	DIN 3405	5	2421K32	0000	0000


								D	Zinc-Plated Steel											10 mm	10 mm	10 mm	8 mm	—	1,450	Ball	DIN 3405	5	10595K38	00000	00000


								M8 × 1.25 mm Metric Thread



										C	Zinc-Plated Steel									9.5 mm	6.5 mm	6.5 mm	—	9 mm	1,450	Ball	DIN 3405	5	10595K39	0000	0000


										M10 × 1 mm Metric Thread



												C	Zinc-Plated Steel							9.5 mm	6.5 mm	6.5 mm	—	11 mm	10,000	Ball	DIN 3405	5	2421K33	0000	0000


												D	Zinc-Plated Steel							10 mm	10 mm	10 mm	10 mm	—	1,450	Ball	DIN 3405	5	10595K41	00000	00000


												M10 × 1.5 mm Metric Thread



														C	Zinc-Plated Steel					9.5 mm	6.5 mm	6.5 mm	—	11 mm	1,450	Ball	DIN 3405	5	10595K42	0000	0000


M12 × 1.5 mm Metric Thread



														C	Zinc-Plated Steel	14 mm	9.5 mm			9.5 mm	—	14 mm	1,450	Ball	DIN 3405	5	10595K43	00000	00000

Grease Gun Tip Adapters


Style B	Style C	Style D	Style E

Quickly switch between grease fitting styles. Adapters have a quick-disconnect fitting that snaps into your dispensing tip for standard grease fittings.

		Dispensing Tip Adapter
	Style	Lg.	Style	Material	Max. Grease Outlet Pressure		Each
For Flush-Style Grease Fittings



		B	2 1/4"	90° Angle	Steel	4,000 psi	2906K95	000000


		C	4 3/4"	Straight	Steel	5,800 psi	2906K52	00000
		D	3 5/8"	Straight	Steel	Not Rated	2906K62	00000
		E	95 mm	Straight	Steel	10,000 psi	2906K58	00000

Flush-Style Grease Fittings for Unthreaded Holes

Since they don’t protrude, these fittings avoid damage from impact and fit in tight spaces. Use a hammer and grease fitting installation tool (not included) to drive them into unthreaded holes. 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.

Straight with Serrated Shank

Fittings with a serrated shank have a tighter grip than those with a smooth shank for a more secure fit in old or oversized holes.

Zinc-Plated Steel—Zinc-plated steel fittings have mild corrosion resistance.

								Pkg.
Material	Overall Ht.	Shank Lg.	Head Dia.	Max. Pressure, psi	Check Valve Type	Pkg. Qty.		1-9	10-Up







			For 3/16" Diameter Holes

			Zinc-Plated Steel	3/8"	5/16"	1/4"	8,000	Ball	5	1102K84	00000	00000

Straight with Smooth Shank

Zinc-Plated Steel—Zinc-plated steel fittings have mild corrosion resistance.

303 Stainless Steel—303 stainless steel fittings are more corrosion resistant than zinc-plated steel fittings and have good chemical resistance.

									Pkg.
Material	Overall Ht.	Shank Lg.	Head Dia.	Max. Pressure	Check Valve Type	Specs. Met	Pkg. Qty.		1-9	10-Up







			For 1/8" Diameter Holes

			Zinc-Plated Steel	5/32"	1/8"	5/32"	1,500 psi	Ball	—	5	1102K22	000000	00000




					For 1/4" Diameter Holes

					Zinc-Plated Steel	9/32"	15/64"	5/16"	Not Rated	Ball	—	5	1102K83	0000	0000




							For 5/16" Diameter Holes

							Zinc-Plated Steel	11/32"	9/32"	3/8"	Not Rated	Ball	—	5	1102K91	0000	0000




									For 5 mm Diameter Holes

									Zinc-Plated Steel	7.5 mm	5.5 mm	8 mm	Not Rated	Ball	—	5	1102K93	0000	0000




											For 6 mm Diameter Holes

											Zinc-Plated Steel	7.5 mm	5.5 mm	8 mm	10,000 psi	Ball	DIN 3405	5	2421K34	00000	00000


											303 Stainless Steel	7.5 mm	5.5 mm	8 mm	1,450 psi	Ball	DIN 3405	1	2421K41	00000	00000




													For 8 mm Diameter Holes

													Zinc-Plated Steel	9.5 mm	6.5 mm	10 mm	10,000 psi	Ball	DIN 3405	5	2421K35	00000	00000




															For 10 mm Diameter Holes

															Zinc-Plated Steel	9.5 mm	6.5 mm	12 mm	10,000 psi	Ball	DIN 3405	3	2421K36	0000	0000

Self-Tapping Flush-Style Grease Fittings for Unthreaded Holes

Ensure a secure fit in unthreaded holes—these fittings cut threads as they’re installed. Use them in tight spaces where protruding fittings won't work. 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. 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.

												Pkg.
	For Hole Dia., mm	Material	Overall Ht., mm	Shank Lg., mm	Thread Lg., mm	Hex Size, mm	Max. Pressure, psi	Check Valve Type	Specs. Met	Pkg. Qty.		1-9	10-Up
Straight with Male Thread







				M6 × 1 mm Metric Thread

				5.6 to 5.7	Zinc-Plated Steel	8.5	5.5	5.5	7	10,000	Ball	DIN 3405	5	2421K37	000000	000000




						M8 × 1 mm Metric Thread

						7.6 to 7.7	Zinc-Plated Steel	8.5	5.5	5.5	9	10,000	Ball	DIN 3405	3	2421K38	0000	0000




								M10 × 1 mm Metric Thread

								9.6 to 9.7	Zinc-Plated Steel	8.5	5.5	5.5	11	10,000	Ball	DIN 3405	1	2421K39	0000	0000

Grease Gun Accessory Kits


7 Pieces	12 Pieces

Sets include dispensing tips for grease fittings and bare lubrication points. Dispensing-tip extensions and adapters have a quick-disconnect fitting that snaps into your dispensing tip for standard grease fittings.

No. of Pieces	Includes		Each
7	4 1/2" Long 90° Angle Rigid Dispensing Tip Extension for Standard Grease Fittings 5 3/8" Long 90° Angle Rigid Dispensing Tip Extension for Standard Grease Fittings 5 5/8" Long Straight Rigid Dispensing Tip Adapter for Flush-Style Grease Fittings 6" Long Straight Rigid Dispensing Tip for Standard Grease Fittings 7 1/2" Long 90° Angle Rigid Dispensing Tip Extension with 360° Rotation for Standard Grease Fittings 12" Long Flexible Dispensing Tip Extension for Standard Grease Fittings Rubber-Tipped Needle Nozzle for U-Joints and Spindles	2906K71	0000000
12	1 1/2" Long Straight Dispensing Tip for Standard Grease Fittings 2 3/4" Long 90° Angle Dispensing Tip Adapter for Flush-Style Grease Fittings 2 3/4" Long 90° Angle Dispensing Tip Adapter for Standard Grease Fittings 4 1/4" Long 90° Angle Dispensing Tip Adapter for Flush-Style Grease Fittings 4 5/16" Long Straight Dispensing Tip Adapter for Flush-Style Grease Fittings 5 1/8" Long Straight Dispensing Tip Adapter with 12-ga. Needle 8" Long Rigid Dispensing Tip Extension 12" Long 45° Angle Dispensing Tip Adapter for Flush-Style Grease Fittings 12" Long 90° Angle Dispensing Tip Adapter For Flush-Style Grease Fittings 12" Long J-Bend Dispensing Tip Adapter for Flush-Style Grease Fittings 12" Long Straight Dispensing Tip Adapter for Flush-Style Grease Fittings 21" Long Flexible Dispensing Tip Extension	2906K61	000000

Grease-Dispensing Tips


Style M	Style N	Style P

Attach dispensing tips to nozzles to deliver lubricant through grease fittings or to bare lubrication points.

		Dispensing Tip				Dispensing Tip Connection
	Style	Lg.	Style	Material	Max. Grease Outlet Pressure, psi	Thread Type	Pipe Size	Gender		Each
For Flush-Style Grease Fittings



		M	13/16"	Straight	Steel	3,000	NPT	1/8	Male	10225K98	00000


		N	1 1/4"	Straight	Steel	10,000	NPTF	1/8	Female	1091K9	00000
		P	2 3/4"	Straight	Steel	6,000	NPT	1/8	Female	1091K12	00000

Compact Pistol-Grip Grease Guns


Style D

Dispense small amounts of grease with one of these compact guns.

For Flush-Style Grease Fittings


Style D

Style D—Styles A and D have a palm and finger-grip design—push the plunger with your thumb to dispense grease.

					Nozzle			Nozzle Connection
Style	Cap., fl. oz.	Strokes per oz.	For NLGI Consistency Grade	Max. Grease Outlet Pressure, psi	Lg.	Type	Material	Thread Type	Pipe Size	Gender	Loading Method		Each
D	3	150	1, 2, 3	3,000	13/16"	With Rigid Nozzle	Steel	NPT	1/8	Male	Hand Pack	10225K97	000000

Lever-Grip Grease Guns


With Rigid Nozzle	With Flexible Nozzle

Dispensing more grease per pump than pistol-grip guns, lever-grip guns are better for applications that require high grease output.

						Nozzle			Nozzle Connection
	Cap., fl. oz.	For Max. Cartridge Size, fl. oz.	Strokes per oz.	For NLGI Consistency Grade	Max. Grease Outlet Pressure, psi	Lg.	Material	Dispensing Tip Material	Thread Type	Pipe Size	Gender	Loading Method		Each
For Flush-Style Grease Fittings







				With Rigid Nozzle

				17 1/2	14	17	000, 00, 0, 1, 2, 3	11,600	6 11/16"	Steel	Steel	NPT	1/8	Male	Bulk Filler Pump, Cartridge	1879K51	000000




						With Flexible Nozzle

						17 1/2	14	17	000, 00, 0, 1, 2, 3	11,600	12"	Polyurethane Rubber	Steel	NPT	1/8	Male	Bulk Filler Pump, Cartridge	1879K56	00000

Push-Action Grease Guns

Deliver small amounts of grease with only a light push against the lubrication point.

						Nozzle
	For Use With	Cap., fl. oz.	Strokes per oz.	For NLGI Consistency Grade	Max. Grease Outlet Pressure, psi	Lg.	Material	Dispensing Tip Material	Overall Lg.	Loading Method		Each
For Flush-Style Grease Fittings







				With Rigid Nozzle

				Grease	3.7	50	000, 00, 0, 1, 2	2,600	1 5/16"	Steel	Steel	9 1/4"	Hand Pack	8648K11	000000

Pistol-Grip Grease Guns


With Rigid Nozzle	With Flexible Nozzle

Because of their one-hand operation, pistol-grip grease guns are easier to use for adding grease to hard-to-reach places than lever-grip guns.

							Nozzle			Nozzle Connection
	For Use With	Cap., fl. oz.	For Max. Cartridge Size, fl. oz.	Strokes per oz.	For NLGI Consistency Grade	Max. Grease Outlet Pressure, psi	Lg.	Material	Dispensing Tip Material	Thread Type	Pipe Size	Gender	Loading Method		Each
For Flush-Style Grease Fittings







				With Rigid Nozzle

				Grease	14	14	40	0, 1, 2	5,400	6"	Steel	Steel	NPT	1/8	Male	Bulk Filler Pump, Cartridge, Hand Pack, Suction	1190K41	000000




						With Flexible Nozzle

						Grease	14	14	40	0, 1, 2	5,400	12"	Nylon	Steel	NPT	1/8	Male	Bulk Filler Pump, Cartridge, Hand Pack, Suction	1190K46	00000

Grease Gun Filler Nipples

		Each
Lincoln Filler Nipple	1099K11	000000
Alemite Filler Nipple	1014K31	00000