ISO 6149 Pipe Plugs | McMaster-Carr

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Maximum Pressure @ Temperature

5,600 psi @ 72° F

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Steel

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How to Identify and Measure Fittings

Pipe size is an industry designation, not the actual size. View information about how to measure threaded and unthreaded pipe and pipe fittings.

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.

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	00000000	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	00000000	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	00000000	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	00000000	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	00000000	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	00000000	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	00000000	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	00000000	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	00000000	00000
M30 × 2 mm	Solid	5,600 psi @ 72° F	Zinc Plated Steel	Air, Hydraulic Fluid, Oil, Water	DIN 7631, ISO 6149, ISO 9974	00000000	00000

Replacement Washers

Temperature Range: -20° to 230° F

For Metric Male
For Thread Size	Gasket Material	Thickness		Each
M10	Buna-N Rubber	2mm	00000000	00000
M12	Buna-N Rubber	1.5mm	00000000	0000
M14	Buna-N Rubber	1.5mm	00000000	0000
M16	Buna-N Rubber	1.5mm	00000000	0000
M18	Buna-N Rubber	1.5mm	00000000	0000
M20	Buna-N Rubber	1.5mm	00000000	0000
M22	Buna-N Rubber	2mm	00000000	0000
M24	Buna-N Rubber	2mm	00000000	0000
M26	Buna-N Rubber	2.5mm	00000000	0000
M30	Buna-N Rubber	2mm	00000000	0000