ISO 1179 Pipe Plugs | McMaster-Carr

Filter by

System of Measurement

Pipe Size

Fitting Type

Thread Type

Drive Style

Material

For Use With

Drive Size

Maximum Pressure @ Temperature

Gender

Length

Body Shape

Shape

Dash Size

Fitting Connection

Gasket Material

Plug Construction

Finish

Connects To

Export Control Classification Number (ECCN)

2B999

EAR99

DFARS Specialty Metals

REACH

RoHS

Fabrication

Washer Material

72 Products

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 galvanized and 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.

For technical drawings and 3-D models, click on a part number.

Plugs with Hex Drive

BSPP and Metric
Male Threads
with Gasket

For Use With:
NPTF and UN/UNF (SAE Straight): Air, Hydraulic Fluid, Water
Metric, BSPP and BSPT: Air, Hydraulic Fluid, Oil, Water
Specifications Met: See table

BSPP Male
Pipe Size	Dash Size	Drive Size	Max. Pressure	Material	Specifications Met		Each
1/8	02	5 mm	5,000 psi @ 72° F	Galvanized Steel	ISO 1179, ISO 8434-6	00000000	00000
1/4	04	6 mm	6,000 psi @ 72° F	Galvanized Steel	ISO 1179, ISO 8434-6	00000000	0000
3/8	06	8 mm	5,500 psi @ 72° F	Galvanized Steel	ISO 1179, ISO 8434-6	00000000	0000
1/2	08	10 mm	4,500 psi @ 72° F	Galvanized Steel	ISO 1179, ISO 8434-6	00000000	0000
3/4	12	12 mm	3,500 psi @ 72° F	Galvanized Steel	ISO 1179, ISO 8434-6	00000000	0000
1	16	17 mm	3,000 psi @ 72° F	Galvanized Steel	ISO 1179, ISO 8434-6	00000000	00000
1 1/4	20	22 mm	2,500 psi @ 72° F	Galvanized Steel	ISO 1179, ISO 8434-6	00000000	00000
1 1/2	24	24 mm	2,000 psi @ 72° F	Galvanized Steel	ISO 1179, ISO 8434-6	00000000	00000

Plugs with External Hex Drive

BSPP and Metric
Male Threads with
Gasket and Washer

For Use With: See table
Specifications Met: See table

BSPP Male
Pipe Size	Dash Size	Plug Construction	Max. Pressure	Material	For Use With	Specifications Met		Each
1/8	02	Hollow	3,500 psi @ 72° F	Galvanized Steel	Air, Hydraulic Fluid, Oil, Water	ISO 1179, ISO 8434-6	00000000	00000
1/8	02	Hollow	5,000 psi @ 72° F	Galvanized Steel	Air, Hydraulic Fluid, Oil, Water	ISO 1179, ISO 8434-6	00000000	0000
1/4	04	Hollow	3,500 psi @ 72° F	Galvanized Steel	Air, Hydraulic Fluid, Oil, Water	ISO 1179, ISO 8434-6	00000000	0000
3/8	06	Hollow	3,500 psi @ 72° F	Galvanized Steel	Air, Hydraulic Fluid, Oil, Water	ISO 1179, ISO 8434-6	00000000	0000
1/2	08	Hollow	3,500 psi @ 72° F	Galvanized Steel	Air, Hydraulic Fluid, Oil, Water	ISO 1179, ISO 8434-6	00000000	0000
5/8	__	Hollow	3,500 psi @ 72° F	Galvanized Steel	Air, Hydraulic Fluid, Oil, Water	ISO 1179, ISO 8434-6	00000000	0000
3/4	12	Hollow	3,000 psi @ 72° F	Galvanized Steel	Air, Hydraulic Fluid, Oil, Water	ISO 1179, ISO 8434-6	00000000	0000
1	16	Hollow	3,000 psi @ 72° F	Galvanized Steel	Air, Hydraulic Fluid, Oil, Water	ISO 1179, ISO 8434-6	00000000	00000
1 1/4	20	Hollow	2,500 psi @ 72° F	Galvanized Steel	Air, Hydraulic Fluid, Oil, Water	ISO 1179, ISO 8434-6	00000000	00000
1 1/2	24	Hollow	2,000 psi @ 72° F	Galvanized Steel	Air, Hydraulic Fluid, Oil, Water	ISO 1179, ISO 8434-6	00000000	00000
2	32	Hollow	2,000 psi @ 72° F	Galvanized Steel	Air, Hydraulic Fluid, Oil, Water	ISO 1179, ISO 8434-6	00000000	00000
2 1/2	40	Hollow	1,200 psi @ 72° F	Galvanized Steel	Air, Hydraulic Fluid, Oil, Water	ISO 1179, ISO 8434-6	00000000	000000

Replacement Washers

Temperature Range: -20° to 230° F

For BSPP Male
For Pipe Size	Gasket Material	Thickness		Each
1/8	Buna-N Rubber	2mm	00000000	00000
1/4	Buna-N Rubber	2.03mm	00000000	000
3/8	Buna-N Rubber	2mm	00000000	000
1/2	Buna-N Rubber	2.5mm	00000000	0000
5/8	Buna-N Rubber	2.5mm	00000000	0000
3/4	Buna-N Rubber	2.5mm	00000000	0000
1	Buna-N Rubber	3.2mm	00000000	0000
1 1/4	Buna-N Rubber	3.2mm	00000000	0000
1 1/2	Buna-N Rubber	3.2mm	00000000	0000
2	Buna-N Rubber	3.2mm	00000000	0000
2 1/2	Buna-N Rubber	3.38mm	00000000	00000

Extreme-Pressure Stainless Steel Threaded Pipe Fittings

With the strength to handle extreme pressures, these fittings can be used to connect equipment in hydraulic fluid lines. 316 stainless steel fittings have excellent corrosion resistance. BSPP and metric male threads have either a gasket or a gasket and washer to prevent leaks.

For technical drawings and 3-D models, click on a part number.

Caps

For Use With: Hydraulic Fluid, Oil, Water
Specifications Met:
BSPP: ISO 1179, ISO 8434-6

			316 Stainless Steel
Pipe Size	Dash Size	Max. Pressure		Each
BSPP Female
1/8	02	5,000 psi @ 72° F	00000000	000000
1/4	04	5,000 psi @ 72° F	00000000	00000
3/8	06	5,000 psi @ 72° F	00000000	00000
1/2	08	4,500 psi @ 72° F	00000000	00000
3/4	12	3,600 psi @ 72° F	00000000	00000
1	16	2,900 psi @ 72° F	00000000	00000

Plugs with Hex Drive

Metric and BSPP Male Threads with Gasket

For Use With:
NPTF: Hydraulic Fluid, Oil, Steam, Water
BSPP and Metric: Hydraulic Fluid, Oil, Water
Specifications Met:
NPTF: ASTM A479
Metric: DIN 7631, ISO 9974
BSPP: ISO 1179, ISO 8434-6

				316 Stainless Steel
Pipe Size	Dash Size	Drive Size	Max. Pressure		Each
BSPP Male
1/8	02	5 mm	5,800 psi @ 72° F	00000000	000000
1/4	04	6 mm	5,800 psi @ 72° F	00000000	00000
3/8	06	8 mm	5,800 psi @ 72° F	00000000	00000
1/2	08	10 mm	5,800 psi @ 72° F	00000000	00000
3/4	12	12 mm	5,800 psi @ 72° F	00000000	00000
1	16	17 mm	5,800 psi @ 72° F	00000000	00000
1 1/4	20	22 mm	4,500 psi @ 72° F	00000000	000000
1 1/2	24	24 mm	4,500 psi @ 72° F	00000000	000000

Plugs with External Hex Drive

BSPP Male
Threads with
Gasket and Washer

For Use With:
UN/UNF (SAE Straight) Plugs: Hydraulic Fluid (Petroleum Base),Oil, Water
All Other Plugs: Hydraulic Fluid, Oil Steam, Water
Specifications Met:
NPTF and UN/UNF (SAE Straight): ASTM A479
BSPP and BSPT: ISO 1179, ISO 8434-6

				316 Stainless Steel
Pipe Size	Dash Size	Plug Construction	Max. Pressure		Each
BSPP Male
1/8	02	Hollow	5,000 psi @ 72° F	00000000	000000
1/4	04	Hollow	5,000 psi @ 72° F	00000000	00000
3/8	06	Hollow	5,000 psi @ 72° F	00000000	00000
1/2	08	Hollow	4,500 psi @ 72° F	00000000	00000
3/4	12	Hollow	3,600 psi @ 72° F	00000000	00000
1	16	Hollow	2,900 psi @ 72° F	00000000	00000
1 1/4	20	Hollow	2,300 psi @ 72° F	00000000	000000
1 1/2	24	Hollow	1,800 psi @ 72° F	00000000	000000
2	32	Hollow	1,200 psi @ 72° F	00000000	000000
BSPT Male
1/8	02	Solid	5,800 psi @ 72° F	00000000	0000
1/4	04	Solid	5,800 psi @ 72° F	00000000	0000
3/8	06	Solid	5,800 psi @ 72° F	00000000	00000
1/2	08	Solid	5,800 psi @ 72° F	00000000	00000
3/4	12	Solid	5,800 psi @ 72° F	00000000	00000
1	16	Solid	5,800 psi @ 72° F	00000000	00000
1 1/4	20	Solid	5,800 psi @ 72° F	00000000	00000
1 1/2	24	Solid	5,800 psi @ 72° F	00000000	00000
2	32	Solid	5,800 psi @ 72° F	00000000	000000

Replacement Washers

Temperature Range: -22° to 230° F

		316 Stainless Steel
For Pipe Size	Gasket Material	Thickness		Each
For BSPP Male
1/8	Buna-N Rubber	2mm	00000000	00000
1/4	Buna-N Rubber	2.03mm	00000000	0000
3/8	Buna-N Rubber	2mm	00000000	0000
1/2	Buna-N Rubber	2.5mm	00000000	0000
3/4	Buna-N Rubber	2.5mm	00000000	0000
1	Buna-N Rubber	3.2mm	00000000	00000
1 1/4	Buna-N Rubber	3.2mm	00000000	00000
1 1/2	Buna-N Rubber	3.2mm	00000000	00000
2	Buna-N Rubber	3.2mm	00000000	00000