ISO 6149 Pipe Fittings | McMaster-Carr

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80 Products

About Pipe and Fittings

Measure your pipe and fittings to identify their pipe size, thread size, schedule, and thread type. Then, find compatible components.

Compact Extreme-Pressure Steel Threaded Pipe Fittings

These fittings are strong enough to handle extreme pressures, yet small enough to fit into cramped spaces. They are zinc-plated steel, which have better corrosion resistance than plain steel fittings. BSPP and metric male threads have either a gasket, or a gasket and washer, to prevent leaks.

Straight Connectors, Female

For Use With:
NPTF: Air, Hydraulic Fluid, Water
Metric: Air, Hydraulic Fluid, Oil, Water
Specifications Met:
NPTF: ASTM A108
Metric: DIN 7631, ISO 6149, ISO 9974

Metric Female
Thread Size	Max. Pressure	Material		Each
M12 × 1.5 mm	4,500 psi @ 72° F	Zinc Plated Steel	4936K979	000000
M14 × 1.5 mm	4,500 psi @ 72° F	Zinc Plated Steel	4936K981	00000
M16 × 1.5 mm	4,000 psi @ 72° F	Zinc Plated Steel	4936K983	00000
M18 × 1.5 mm	4,000 psi @ 72° F	Zinc Plated Steel	4936K984	00000
M20 × 1.5 mm	3,500 psi @ 72° F	Zinc Plated Steel	4936K985	00000
M22 × 1.5 mm	3,500 psi @ 72° F	Zinc Plated Steel	4936K987	00000

Straight Adapters, Female × Male

BSPP and Metric
Male Threads with
Gasket and Washer

For Use With: See table
Specifications Met: See table

NPT Female × Metric Male
Pipe Size (A)	Thread Size (A)	Dash Size (A)	Pipe Size (B)	Thread Size (B)	Dash Size (B)	Max. Pressure	Material	For Use With	Specifications Met		Each
1/8	__	02	__	M6 × 0.75 mm	__	5,000 psi @ 72° F	Zinc Plated Steel	Air, Hydraulic Fluid, Oil, Water	ASME B1.20.3, DIN 7631, ISO 6149, ISO 9974	4936K833	000000
1/8	__	02	__	M6 × 1 mm	__	5,000 psi @ 72° F	Zinc Plated Steel	Air, Hydraulic Fluid, Oil, Water	ASME B1.20.3, DIN 7631, ISO 6149, ISO 9974	4936K835	00000
1/8	__	02	__	M8 × 1 mm	__	5,000 psi @ 72° F	Zinc Plated Steel	Air, Hydraulic Fluid, Oil, Water	ASME B1.20.3, DIN 7631, ISO 6149, ISO 9974	4936K836	00000
1/8	__	02	__	M10 × 1 mm	__	5,000 psi @ 72° F	Zinc Plated Steel	Air, Hydraulic Fluid, Oil, Water	ASME B1.20.3, DIN 7631, ISO 6149, ISO 9974	4936K153	0000
1/8	__	02	__	M10 × 1.5 mm	__	5,000 psi @ 72° F	Zinc Plated Steel	Air, Hydraulic Fluid, Oil, Water	ASME B1.20.3, DIN 7631, ISO 6149, ISO 9974	4936K839	00000
1/8	__	02	__	M12 × 1.5 mm	__	5,000 psi @ 72° F	Zinc Plated Steel	Air, Hydraulic Fluid, Oil, Water	ASME B1.20.3, DIN 7631, ISO 6149, ISO 9974	4936K842	00000
1/4	__	04	__	M10 × 1 mm	__	4,500 psi @ 72° F	Zinc Plated Steel	Air, Hydraulic Fluid, Oil, Water	ASME B1.20.3, DIN 7631, ISO 6149, ISO 9974	4936K838	00000
1/4	__	04	__	M10 × 1.5 mm	__	5,000 psi @ 72° F	Zinc Plated Steel	Air, Hydraulic Fluid, Oil, Water	ASME B1.20.3, DIN 7631, ISO 6149, ISO 9974	4936K841	00000
1/4	__	04	__	M12 × 1 mm	__	4,500 psi @ 72° F	Zinc Plated Steel	Air, Hydraulic Fluid, Oil, Water	ASME B1.20.3, DIN 7631, ISO 6149, ISO 9974	4936K844	00000
1/2	__	08	__	M16 × 1.5 mm	__	3,500 psi @ 72° F	Zinc Plated Steel	Air, Hydraulic Fluid, Oil, Water	ASME B1.20.3, DIN 7631, ISO 6149, ISO 9974	4936K158	00000
1/2	__	08	__	M20 × 1.5 mm	__	3,500 psi @ 72° F	Zinc Plated Steel	Air, Hydraulic Fluid, Oil, Water	ASME B1.20.3, DIN 7631, ISO 6149, ISO 9974	4936K451	00000
3/4	__	12	__	M26 × 1.5 mm	__	3,000 psi @ 72° F	Zinc Plated Steel	Air, Hydraulic Fluid, Oil, Water	ASME B1.20.3, DIN 7631, ISO 6149, ISO 9974	4936K853	00000
3/4	__	12	__	M27 × 2 mm	__	3,000 psi @ 72° F	Zinc Plated Steel	Air, Hydraulic Fluid, Oil, Water	ASME B1.20.3, DIN 7631, ISO 6149, ISO 9974	4936K453	00000
1	__	16	__	M33 × 2 mm	__	2,500 psi @ 72° F	Zinc Plated Steel	Air, Hydraulic Fluid, Oil, Water	ASME B1.20.3, DIN 7631, ISO 6149, ISO 9974	4936K454	00000
Metric Female × NPT Male
__	M8 × 1 mm	__	1/8	__	02	5,000 psi @ 72° F	Zinc Plated Steel	Air, Hydraulic Fluid, Oil, Water	ASME B1.20.3, DIN 7631, ISO 6149, ISO 9974	4936K856	00000
__	M10 × 1 mm	__	1/8	__	02	5,000 psi @ 72° F	Zinc Plated Steel	Air, Hydraulic Fluid, Oil, Water	ASME B1.20.3, DIN 7631, ISO 6149, ISO 9974	4936K857	00000
__	M10 × 1.5 mm	__	1/8	__	02	5,000 psi @ 72° F	Zinc Plated Steel	Air, Hydraulic Fluid, Oil, Water	ASME B1.20.3, DIN 7631, ISO 6149, ISO 9974	4936K858	00000
__	M12 × 1.5 mm	__	1/4	__	04	6,000 psi @ 72° F	Zinc Plated Steel	Air, Hydraulic Fluid, Oil, Water	ASME B1.20.3, DIN 7631, ISO 6149, ISO 9974	4936K859	00000
__	M14 × 1.5 mm	__	1/4	__	04	6,000 psi @ 72° F	Zinc Plated Steel	Air, Hydraulic Fluid, Oil, Water	ASME B1.20.3, DIN 7631, ISO 6149, ISO 9974	4936K861	00000
__	M14 × 1.5 mm	__	3/8	__	06	5,500 psi @ 72° F	Zinc Plated Steel	Air, Hydraulic Fluid, Oil, Water	ASME B1.20.3, DIN 7631, ISO 6149, ISO 9974	4936K863	00000
__	M16 × 1.5 mm	__	1/4	__	04	6,000 psi @ 72° F	Zinc Plated Steel	Air, Hydraulic Fluid, Oil, Water	ASME B1.20.3, DIN 7631, ISO 6149, ISO 9974	4936K862	00000
__	M16 × 1.5 mm	__	3/8	__	06	5,500 psi @ 72° F	Zinc Plated Steel	Air, Hydraulic Fluid, Oil, Water	ASME B1.20.3, DIN 7631, ISO 6149, ISO 9974	4936K864	00000
__	M18 × 1.5 mm	__	3/8	__	06	5,500 psi @ 72° F	Zinc Plated Steel	Air, Hydraulic Fluid, Oil, Water	ASME B1.20.3, DIN 7631, ISO 6149, ISO 9974	4936K865	00000
__	M18 × 1.5 mm	__	1/2	__	08	4,500 psi @ 72° F	Zinc Plated Steel	Air, Hydraulic Fluid, Oil, Water	ASME B1.20.3, DIN 7631, ISO 6149, ISO 9974	4936K866	00000
__	M20 × 1.5 mm	__	1/2	__	08	4,500 psi @ 72° F	Zinc Plated Steel	Air, Hydraulic Fluid, Oil, Water	ASME B1.20.3, DIN 7631, ISO 6149, ISO 9974	4936K867	00000
__	M22 × 1.5 mm	__	1/2	__	08	4,500 psi @ 72° F	Zinc Plated Steel	Air, Hydraulic Fluid, Oil, Water	ASME B1.20.3, DIN 7631, ISO 6149, ISO 9974	4936K868	00000
__	M26 × 1.5 mm	__	3/4	__	12	3,500 psi @ 72° F	Zinc Plated Steel	Air, Hydraulic Fluid, Oil, Water	ASME B1.20.3, DIN 7631, ISO 6149, ISO 9974	4936K869	00000

Straight Adapters, Male

BSPP, Metric, and UN/UNF
(SAE Straight) Male
Threads with Gasket and Washer

For Use With: See table
Specifications Met: See table

BSPP Male × Metric Male
Pipe Size (A)	Dash Size (A)	Thread Size (B)	Max. Pressure	Material	For Use With	Specifications Met		Each
1/8	02	M10 × 1 mm	5,000 psi @ 72° F	Zinc Plated Steel	Air, Diesel Fuel, Gasoline, Hydraulic Fluid, Oil, Water	DIN 7631, ISO 1179, ISO 6149, ISO 8434-6, ISO 9974	4936K745	000000
1/4	04	M10 × 1.5 mm	6,000 psi @ 72° F	Zinc Plated Steel	Air, Diesel Fuel, Gasoline, Hydraulic Fluid, Oil, Water	DIN 7631, ISO 1179, ISO 6149, ISO 8434-6, ISO 9974	4936K748	00000
1/4	04	M12 × 1.5 mm	6,000 psi @ 72° F	Zinc Plated Steel	Air, Diesel Fuel, Gasoline, Hydraulic Fluid, Oil, Water	DIN 7631, ISO 1179, ISO 6149, ISO 8434-6, ISO 9974	4936K749	00000
1/4	04	M14 × 1.5 mm	6,000 psi @ 72° F	Zinc Plated Steel	Air, Diesel Fuel, Gasoline, Hydraulic Fluid, Oil, Water	DIN 7631, ISO 1179, ISO 6149, ISO 8434-6, ISO 9974	4936K751	00000
3/8	06	M12 × 1.5 mm	5,500 psi @ 72° F	Zinc Plated Steel	Air, Diesel Fuel, Gasoline, Hydraulic Fluid, Oil, Water	DIN 7631, ISO 1179, ISO 6149, ISO 8434-6, ISO 9974	4936K752	00000
3/8	06	M14 × 1.5 mm	5,500 psi @ 72° F	Zinc Plated Steel	Air, Diesel Fuel, Gasoline, Hydraulic Fluid, Oil, Water	DIN 7631, ISO 1179, ISO 6149, ISO 8434-6, ISO 9974	4936K753	00000
3/8	06	M16 × 1.5 mm	5,500 psi @ 72° F	Zinc Plated Steel	Air, Diesel Fuel, Gasoline, Hydraulic Fluid, Oil, Water	DIN 7631, ISO 1179, ISO 6149, ISO 8434-6, ISO 9974	4936K754	00000
3/8	06	M20 × 1.5 mm	4,500 psi @ 72° F	Zinc Plated Steel	Air, Hydraulic Fluid, Oil, Water	DIN 7631, ISO 1179, ISO 6149, ISO 8434-6, ISO 9974	4936K11	00000
1/2	08	M18 × 1.5 mm	4,500 psi @ 72° F	Zinc Plated Steel	Air, Diesel Fuel, Gasoline, Hydraulic Fluid, Oil, Water	DIN 7631, ISO 1179, ISO 6149, ISO 8434-6, ISO 9974	4936K755	00000
1/2	08	M20 × 1.5 mm	4,500 psi @ 72° F	Zinc Plated Steel	Air, Diesel Fuel, Gasoline, Hydraulic Fluid, Oil, Water	DIN 7631, ISO 1179, ISO 6149, ISO 8434-6, ISO 9974	4936K756	00000
1/2	08	M22 × 1.5 mm	4,500 psi @ 72° F	Zinc Plated Steel	Air, Diesel Fuel, Gasoline, Hydraulic Fluid, Oil, Water	DIN 7631, ISO 1179, ISO 6149, ISO 8434-6, ISO 9974	4936K757	00000
5/8	__	M22 × 1.5 mm	4,000 psi @ 72° F	Zinc Plated Steel	Air, Diesel Fuel, Gasoline, Hydraulic Fluid, Oil, Water	DIN 7631, ISO 1179, ISO 6149, ISO 8434-6, ISO 9974	4936K758	00000
3/4	12	M24 × 1.5 mm	3,500 psi @ 72° F	Zinc Plated Steel	Air, Diesel Fuel, Gasoline, Hydraulic Fluid, Oil, Water	DIN 7631, ISO 1179, ISO 6149, ISO 8434-6, ISO 9974	4936K761	00000
1	16	M36 × 1.5 mm	3,000 psi @ 72° F	Zinc Plated Steel	Air, Diesel Fuel, Gasoline, Hydraulic Fluid, Oil, Water	DIN 7631, ISO 1179, ISO 6149, ISO 8434-6, ISO 9974	4936K762	00000

Straight Reducers, Female

For Use With:
NPTF: Air, Hydraulic Fluid, Water
Metric: Air, Hydraulic Fluid, Oil, Water
Specifications Met:
NPTF: ASTM A108
Metric: DIN 7631, ISO 6149, ISO 9974

Thread Size
(A)	(B)	Max. Pressure	Material		Each
Metric Female
M16 × 1.5 mm	M12 × 1.5 mm	4,500 psi @ 72° F	Zinc Plated Steel	4936K982	000000
M22 × 1.5 mm	M16 × 1.5 mm	4,000 psi @ 72° F	Zinc Plated Steel	4936K986	00000

Plugs with External Hex Drive

BSPP and Metric
Male Threads with
Gasket and Washer

For Use With: See table
Specifications Met: See table

Metric Male
Thread Size	Plug Construction	Max. Pressure	Material	For Use With	Specifications Met		Each
M10 × 1 mm	Solid	5,600 psi @ 72° F	Zinc Plated Steel	Air, Hydraulic Fluid, Oil, Water	DIN 7631, ISO 6149, ISO 9974	4936K675	00000
M12 × 1.5 mm	Solid	5,600 psi @ 72° F	Zinc Plated Steel	Air, Hydraulic Fluid, Oil, Water	DIN 7631, ISO 6149, ISO 9974	4936K889	0000
M14 × 1.5 mm	Solid	5,600 psi @ 72° F	Zinc Plated Steel	Air, Hydraulic Fluid, Oil, Water	DIN 7631, ISO 6149, ISO 9974	4936K891	0000
M16 × 1.5 mm	Solid	5,600 psi @ 72° F	Zinc Plated Steel	Air, Hydraulic Fluid, Oil, Water	DIN 7631, ISO 6149, ISO 9974	4936K892	0000
M18 × 1.5 mm	Solid	5,600 psi @ 72° F	Zinc Plated Steel	Air, Hydraulic Fluid, Oil, Water	DIN 7631, ISO 6149, ISO 9974	4936K893	0000
M20 × 1.5 mm	Solid	5,600 psi @ 72° F	Zinc Plated Steel	Air, Hydraulic Fluid, Oil, Water	DIN 7631, ISO 6149, ISO 9974	4936K894	00000
M22 × 1.5 mm	Solid	5,600 psi @ 72° F	Zinc Plated Steel	Air, Hydraulic Fluid, Oil, Water	DIN 7631, ISO 6149, ISO 9974	4936K895	00000
M24 × 1.5 mm	Solid	5,600 psi @ 72° F	Zinc Plated Steel	Air, Hydraulic Fluid, Oil, Water	DIN 7631, ISO 6149, ISO 9974	4936K896	00000
M26 × 1.5 mm	Solid	5,600 psi @ 72° F	Zinc Plated Steel	Air, Hydraulic Fluid, Oil, Water	DIN 7631, ISO 6149, ISO 9974	4936K897	00000
M30 × 2 mm	Solid	5,600 psi @ 72° F	Zinc Plated Steel	Air, Hydraulic Fluid, Oil, Water	DIN 7631, ISO 6149, ISO 9974	4936K898	00000

Replacement Washers

Temperature Range: -20° to 230° F

For BSPP Male
For Pipe Size	For Thread Size	Gasket Material	Thickness		Each
1/8	__	Buna-N Rubber	2mm	4936K661	00000
1/4	__	Buna-N Rubber	2.03mm	4936K662	000
3/8	__	Buna-N Rubber	2mm	4936K633	000
1/2	__	Buna-N Rubber	2.5mm	4936K634	0000
5/8	__	Buna-N Rubber	2.5mm	4936K635	0000
3/4	__	Buna-N Rubber	2.5mm	4936K636	0000
1	__	Buna-N Rubber	3.2mm	4936K663	0000
For Metric Male
__	M6	Buna-N Rubber	1mm	4936K645	0000
__	M8	Buna-N Rubber	1mm	4936K646	0000
__	M10	Buna-N Rubber	2mm	4936K647	000
__	M12	Buna-N Rubber	1.5mm	4936K648	0000
__	M14	Buna-N Rubber	1.5mm	4936K649	0000
__	M16	Buna-N Rubber	1.5mm	4936K651	0000
__	M18	Buna-N Rubber	1.5mm	4936K652	0000
__	M20	Buna-N Rubber	1.5mm	4936K653	0000
__	M22	Buna-N Rubber	2mm	4936K654	0000
__	M24	Buna-N Rubber	2mm	4936K655	0000
__	M26	Buna-N Rubber	2.5mm	4936K656	0000
__	M27	Buna-N Rubber	2mm	4936K657	0000
__	M30	Buna-N Rubber	2mm	4936K658	0000
__	M33	Buna-N Rubber	2mm	4936K659	0000