Rocker Lugs | McMaster-Carr

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76 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.

About Fire-Fighting Hose Threads

Cap

Plug

The rocker lugs on these caps and plugs allow for easy gripping, so you can quickly close off fire hydrants and washdown equipment. Tighten with a hook-style spanner wrench (sold separately). Caps and plugs are brass for good corrosion resistance.

NH/NST (National Hose/National Standard) threads are only compatible with other NH/NST threads. Chicago Fire Department threads are only compatible with other Chicago Fire Department threads.

Cap
Fire Hose Trade Size	Thread Type	Material	Lg.	Chain Lg.		Each
1	NH/NST	Brass	1 7/32"	9"	00000000	000000
1 1/2	NH/NST	Brass	1 1/8"	9"	00000000	00000
2 1/2	NH/NST	Brass	1 7/16"	9"	00000000	00000
Plug
1 1/2	NH/NST	Brass	1 11/16"	9"	0000000	00000
2 1/2	NH/NST	Brass	2 3/32"	9"	0000000	00000
2 1/2	Chicago Fire Department	Brass	2 3/32"	9"	0000000	00000

Rocker-Lug Fire-Fighting Hose Fittings

The rocker lugs on these fittings allow for easy gripping, so you can quickly connect to fire hydrants and washdown equipment. Tighten with a hook-style spanner wrench (sold separately).

Fittings that swivel until tightened rotate to help prevent kinking during installation.

NH/NST (National Hose/National Standard) threads are only compatible with other NH/NST threads. Male NPSH (National Pipe Straight Hose) threads are compatible with female NPSH threads. Female NPSH threads are compatible with male NPSH, NPT, NPTF, and NPSM threads.

Aluminum fittings are more lightweight than brass fittings. They have good abrasion and corrosion resistance. Brass fittings are softer than aluminum fittings, so they’re easier to thread together. They have good corrosion resistance.

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

Straight Adapters, NH/NST Male Threaded Hose × NPT Male Threaded Hose

Aluminum
Fire Hose Trade Size	Pipe Size		Each
1 1/2	1 1/2	0000000	000000

Straight Adapters, NH/NST Male Threaded Hose × NPSH Female Threaded Hose

Brass
Fire Hose Trade Size	Pipe Size		Each
1 1/2	1 1/2	0000000	000000

Straight Adapters, NPT Male Threaded Hose × NPSH Male Threaded Hose

Aluminum
Pipe Size		Each
1 1/2	0000000	000000

Straight Adapters, NPT Male Threaded Hose × NPSH Female Threaded Hose

Aluminum
Pipe Size		Each
2	0000000	000000

Straight Adapters, NPT Male Threaded Pipe × NH/NST Female Threaded Hose

Brass
Pipe Size	Fire Hose Trade Size		Each
1 1/2	1 1/2	0000000	000000
2 1/2	2 1/2	0000000	00000

Straight Adapters (Swivels Until Tightened), NPT Female Threaded Hose × NH/NST Female Threaded Hose

Aluminum
Pipe Size	Fire Hose Trade Size		Each
2 1/2	2 1/2	0000000	0000000

Straight Adapters (Swivels Until Tightened), NPT Female Threaded Hose × NPSH Female Threaded Hose

Aluminum
Pipe Size		Each
1 1/2	0000000	000000

Straight Connectors (Swivels Until Tightened), NH/NST Female Threaded Hose

Aluminum
Fire Hose Trade Size		Each
1 1/2	0000000	0000000

Straight Connectors (Swivels Until Tightened), NPSH Female Threaded Hose

Aluminum
Pipe Size		Each
1 1/2	0000000	0000000

Straight Reducing Adapters, NH/NST Male Threaded Hose × NPT Male Threaded Hose

Fire Hose Trade Size
(A)	(B)		Each
Aluminum
2 1/2	2	0000000	000000

Straight Reducing Adapters, NH/NST Male Threaded Hose × NH/NST Female Threaded Hose

Fire Hose Trade Size
(A)	(B)		Each
Brass
1	1 1/2	0000000	000000
1	2 1/2	0000000	00000
1 1/2	2 1/2	0000000	00000
2 1/2	1 1/2	0000000	00000
Aluminum
1	1 1/2	0000000	00000
1 1/2	1	0000000	00000
1 1/2	2 1/2	0000000	00000
2 1/2	4 1/2	0000000	000000

Straight Reducing Adapters, NH/NST Male Threaded Hose × NPSH Female Threaded Hose

Brass
Fire Hose Trade Size (A)	Pipe Size (B)		Each
1 1/2	2 1/2	0000000	000000

Straight Reducing Adapters, NPT Male Threaded Hose × NH/NST Female Threaded Hose

Pipe Size
(A)	(B)		Each
Brass
1	1 1/2	0000000	000000
1	2 1/2	0000000	00000
2	2 1/2	0000000	00000
Aluminum
2	2 1/2	0000000	00000
4	4 1/2	0000000	000000

Straight Reducing Adapters, NPSH Male Threaded Hose × NH/NST Female Threaded Hose

Brass
Pipe Size (A)	Fire Hose Trade Size (B)		Each
1 1/2	2 1/2	0000000	000000

Straight Reducing Adapters, NPSH Male Threaded Hose × NPSH Female Threaded Hose

Pipe Size
(A)	(B)		Each
Brass
1 1/2	2 1/2	0000000	000000
Aluminum
1 1/2	2	0000000	00000

Lightweight Fire-Fighting Hose

Temperature Range: -40° to 180° F
Material: Polyurethane with Polyester Cover
Color: White
Female Fitting Swivels Until Tightened

Also known as pin-rack hose, this hose can be folded to fit in a rack. The lugs provide a quick connection to hydrants and washdown equipment. Use a hook-style spanner wrench to tighten them. Fittings that swivel until tightened are easy to install.

Brass fittings are more durable than aluminum fittings. Aluminum fittings are lighter than brass fittings.

Hoses meet NFPA 1961. They are also FM Approved to meet American safety standards.

50-ft. Lengths
	ID	OD	Hose Size	Max. Pressure	Specifications Met		Each
Brass Threaded NPSH Male × Brass Threaded NPSH Female
Pin/Rocker	1 1/2"	1 11/16"	1 1/2 × 1 1/2	225 psi @ 72° F	FM Approved	00000000	0000000
Brass Threaded NH/NST Male × Brass Threaded NH/NST Female
Pin/Rocker	1 1/2"	1 11/16"	1 1/2 × 1 1/2	225 psi @ 72° F	FM Approved	00000000	000000
Aluminum Threaded NPSH Male × Aluminum Threaded NPSH Female
Rocker	1 1/2"	1 11/16"	1 1/2 × 1 1/2	225 psi @ 72° F	FM Approved	00000000	000000
Aluminum Threaded NH/NST Male × Aluminum Threaded NH/NST Female
Rocker	1 1/2"	1 11/16"	1 1/2 × 1 1/2	225 psi @ 72° F	FM Approved	00000000	000000
75-ft. Lengths
Brass Threaded NPSH Male × Brass Threaded NPSH Female
Pin/Rocker	1 1/2"	1 11/16"	1 1/2 × 1 1/2	225 psi @ 72° F	FM Approved	00000000	000000
Brass Threaded NH/NST Male × Brass Threaded NH/NST Female
Pin/Rocker	1 1/2"	1 11/16"	1 1/2 × 1 1/2	225 psi @ 72° F	FM Approved	00000000	000000
Aluminum Threaded NPSH Male × Aluminum Threaded NPSH Female
Rocker	1 1/2"	1 11/16"	1 1/2 × 1 1/2	225 psi @ 72° F	FM Approved	00000000	000000
Aluminum Threaded NH/NST Male × Aluminum Threaded NH/NST Female
Rocker	1 1/2"	1 11/16"	1 1/2 × 1 1/2	225 psi @ 72° F	FM Approved	00000000	000000
100-ft. Lengths
Brass Threaded NPSH Male × Brass Threaded NPSH Female
Pin/Rocker	1 1/2"	1 11/16"	1 1/2 × 1 1/2	225 psi @ 72° F	FM Approved	00000000	000000
Brass Threaded NH/NST Male × Brass Threaded NH/NST Female
Pin/Rocker	1 1/2"	1 11/16"	1 1/2 × 1 1/2	225 psi @ 72° F	FM Approved	00000000	000000
Aluminum Threaded NPSH Male × Aluminum Threaded NPSH Female
Rocker	1 1/2"	1 11/16"	1 1/2 × 1 1/2	225 psi @ 72° F	FM Approved	00000000	000000
Aluminum Threaded NH/NST Male × Aluminum Threaded NH/NST Female
Rocker	1 1/2"	1 11/16"	1 1/2 × 1 1/2	225 psi @ 72° F	FM Approved	00000000	000000

Extra-Tough Fire-Fighting Hose

Temperature Range: -40° to 150° F
Material: EPDM Rubber with Polyester Cover
Color: White
Female Fitting Swivels Until Tightened

Two heavy duty polyester covers protect this hose. The lugs provide a quick connection to hydrants and washdown equipment. Use a hook-style spanner wrench to tighten them.Fittings that swivel until tightened are easy to install.

Aluminum fittings are lighter than brass fittings.

Hoses meet NFPA 1961.

					50-ft. Lengths		100-ft. Lengths
Lug Style	ID	OD	Hose Size	Max. Pressure		Each		Each
Aluminum Threaded NPSH Male × Aluminum Threaded NPSH Female
Rocker × Rocker	1 1/2"	1 15/16"	1 1/2 × 1 1/2	270 psi @ 72° F	00000000	0000000	00000000	0000000
Rocker × Rocker	2 1/2"	3"	2 1/2 × 2 1/2	270 psi @ 72° F	00000000	000000	00000000	000000
Aluminum Threaded NH/NST Male × Aluminum Threaded NH/NST Female
Rocker × Rocker	1 1/2"	1 15/16"	1 1/2 × 1 1/2	270 psi @ 72° F	00000000	000000	00000000	000000
Rocker × Rocker	2 1/2"	3"	2 1/2 × 2 1/2	270 psi @ 72° F	00000000	000000	00000000	000000

Abrasion-Resistant Fire-Fighting Hose

Temperature Range: -40° to 150° F
Material: Polyurethane Rubber with Polyester Cover
Color: White
Female Fitting Swivels Until Tightened

Lightweight yet tough, this hose has an abrasion-resistant polyester cover. The lugs provide a quick connection to hydrants and washdown equipment. Use a hook-style spanner wrench to tighten them. Fittings that swivel until tightened are easy to install.

Brass fittings are more durable than aluminum fittings. Aluminum fittings are lighter than brass fittings.

Hoses meet NFPA 1961.

UL Listed and FM Approved hoses meet American safety standards.

50-ft. Lengths
Lug Style	ID	OD	Hose Size	Max. Pressure	Specifications Met		Each
Brass Threaded NPSH Male × Brass Threaded NPSH Female
Rocker × Rocker	2 1/2"	2 13/16"	2 1/2 × 2 1/2	225 psi @ 72° F	UL Listed, FM Approved	0000000	0000000
Brass Threaded NH/NST Male × Brass Threaded NH/NST Female
Rocker × Rocker	2 1/2"	2 13/16"	2 1/2 × 2 1/2	225 psi @ 72° F	UL Listed, FM Approved	0000000	000000
Aluminum Threaded NPSH Male × Aluminum Threaded NPSH Female
Rocker	1"	1 3/16"	1 × 1	300 psi @ 72° F	__	00000000	000000
Aluminum Threaded NH/NST Male × Aluminum Threaded NH/NST Female
Rocker	1"	1 3/16"	1 × 1	300 psi @ 72° F	__	00000000	000000
75-ft. Lengths
Brass Threaded NPSH Male × Brass Threaded NPSH Female
Rocker × Rocker	2 1/2"	2 13/16"	2 1/2 × 2 1/2	225 psi @ 72° F	UL Listed, FM Approved	0000000	000000
Brass Threaded NH/NST Male × Brass Threaded NH/NST Female
Rocker × Rocker	2 1/2"	2 13/16"	2 1/2 × 2 1/2	225 psi @ 72° F	UL Listed, FM Approved	0000000	000000
100-ft. Lengths
Brass Threaded NPSH Male × Brass Threaded NPSH Female
Rocker × Rocker	2 1/2"	2 13/16"	2 1/2 × 2 1/2	225 psi @ 72° F	UL Listed, FM Approved	0000000	000000
Brass Threaded NH/NST Male × Brass Threaded NH/NST Female
Rocker × Rocker	2 1/2"	2 13/16"	2 1/2 × 2 1/2	225 psi @ 72° F	UL Listed, FM Approved	0000000	000000
Aluminum Threaded NPSH Male × Aluminum Threaded NPSH Female
Rocker	1"	1 3/16"	1 × 1	300 psi @ 72° F	__	00000000	000000
Aluminum Threaded NH/NST Male × Aluminum Threaded NH/NST Female
Rocker	1"	1 3/16"	1 × 1	300 psi @ 72° F	__	00000000	000000

Choose-a-Color Abrasion-Resistant Fire-Fighting Hose

Temperature Range: -40° to150° F
Material: EPDM Rubber with Polyester Cover
Color: Red, White, or Yellow
Female Fitting Swivels Until Tightened

Differentiate your hose by color. The abrasion-resistant polyester cover on this hose comes in red, white, or yellow. The lugs provide a quick connection to hydrants and washdown equipment. Use a hook-style spanner wrench to tighten them. Fittings that swivel until tightened are easy to install.

Brass fittings are more durable than aluminum fittings. Aluminum fittings are lighter than brass fittings.

Hoses meet NFPA 1961. They are also UL Listed and FM Approved to meet American safety standards.

50-ft. Lengths
Lug Style	ID	OD	Hose Size	Max. Pressure	Specifications Met	Choose a Color		Each
Brass Threaded NPSH Male × Brass Threaded NPSH Female
Rocker × Rocker	1 1/2"	1 3/4"	1 1/2 × 1 1/2	225 psi @ 72° F	UL Listed, FM Approved	Red, White, Yellow	00000000	0000000
Brass Threaded NH/NST Male × Brass Threaded NH/NST Female
Rocker × Rocker	1 1/2"	1 3/4"	1 1/2 × 1 1/2	225 psi @ 72° F	UL Listed, FM Approved	Red, White, Yellow	00000000	000000
Aluminum Threaded NPSH Male × Aluminum Threaded NPSH Female
Rocker × Rocker	1 1/2"	1 3/4"	1 1/2 × 1 1/2	225 psi @ 72° F	UL Listed, FM Approved	Red, White, Yellow	00000000	000000
Aluminum Threaded NH/NST Male × Aluminum Threaded NH/NST Female
Rocker × Rocker	1 1/2"	1 3/4"	1 1/2 × 1 1/2	225 psi @ 72° F	UL Listed, FM Approved	Red, White, Yellow	00000000	000000
75-ft. Lengths
Brass Threaded NPSH Male × Brass Threaded NPSH Female
Rocker × Rocker	1 1/2"	1 3/4"	1 1/2 × 1 1/2	225 psi @ 72° F	UL Listed, FM Approved	Red, White, Yellow	00000000	000000
Brass Threaded NH/NST Male × Brass Threaded NH/NST Female
Rocker × Rocker	1 1/2"	1 3/4"	1 1/2 × 1 1/2	225 psi @ 72° F	UL Listed, FM Approved	Red, White, Yellow	00000000	000000
Aluminum Threaded NPSH Male × Aluminum Threaded NPSH Female
Rocker × Rocker	1 1/2"	1 3/4"	1 1/2 × 1 1/2	225 psi @ 72° F	UL Listed, FM Approved	Red, White, Yellow	00000000	000000
Aluminum Threaded NH/NST Male × Aluminum Threaded NH/NST Female
Rocker × Rocker	1 1/2"	1 3/4"	1 1/2 × 1 1/2	225 psi @ 72° F	UL Listed, FM Approved	Red, White, Yellow	00000000	000000
100-ft. Lengths
Brass Threaded NPSH Male × Brass Threaded NPSH Female
Rocker × Rocker	1 1/2"	1 3/4"	1 1/2 × 1 1/2	225 psi @ 72° F	UL Listed, FM Approved	Red, White, Yellow	00000000	000000
Brass Threaded NH/NST Male × Brass Threaded NH/NST Female
Rocker × Rocker	1 1/2"	1 3/4"	1 1/2 × 1 1/2	225 psi @ 72° F	UL Listed, FM Approved	Red, White, Yellow	00000000	000000
Aluminum Threaded NPSH Male × Aluminum Threaded NPSH Female
Rocker × Rocker	1 1/2"	1 3/4"	1 1/2 × 1 1/2	225 psi @ 72° F	UL Listed, FM Approved	Red, White, Yellow	00000000	000000
Aluminum Threaded NH/NST Male × Aluminum Threaded NH/NST Female
Rocker × Rocker	1 1/2"	1 3/4"	1 1/2 × 1 1/2	225 psi @ 72° F	UL Listed, FM Approved	Red, White, Yellow	00000000	000000

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How to Identify and Measure Fittings

About Fire-Fighting Hose Threads

Rocker-Lug Fire Hydrant Caps and Plugs

Rocker-Lug Fire-Fighting Hose Fittings

Lightweight Fire-Fighting Hose

Extra-Tough Fire-Fighting Hose

Abrasion-Resistant Fire-Fighting Hose

Choose-a-Color Abrasion-Resistant Fire-Fighting Hose