UNS Plugs | McMaster-Carr

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	System of Measurement System of Measurement

Inch

	Thread Size Thread Size

	Thread Type Thread Type	Show

UNS

	Thread Type Thread Type	Hide

BSF

BSPP

BSPT

Chicago Fire
Department

UN/UNF (SAE Straight)

	Cap Type Cap Type

	Screw On

	Material Material

	For OD For OD

	For Shape For Shape

	Round

	Plug Type Plug Type

	Screw In

	Profile Profile

	Straight

	For Connection Type For Connection Type

Straight-Thread Pipe

37° Flared Tube

	Inside Height Inside Height

	DFARS (Defense Acquisition Regulations Supplement) DFARS (Defense Acquisition Regulations Supplement)

DFARS Specialty Metals
COTS-Exempt

	Maximum Temperature Maximum Temperature

100° to 249° F

250° to 499° F

	RoHS (Restriction of Hazardous Substances) RoHS (Restriction of Hazardous Substances)

RoHS Compliant

RoHS Compliant with
Exemptions

	Color Color

	Black
	Green
	Red

	REACH (Registration, Evaluation, Authorization and Restriction of Chemicals) REACH (Registration, Evaluation, Authorization and Restriction of Chemicals)

REACH Compliant

	Flexibility Flexibility

Rigid

	For Tube OD For Tube OD

3/4"

	For Surface Type For Surface Type

Threaded

	For Thread Location For Thread Location

Internal

External

	Hardness Hardness

Durometer 40D

	Height Height

7/8"

15/16"

	Thread Location Thread Location

25 Products

Caps for Mini Connectors

External Thread with Lanyard

External Thread

Internal Thread with Lanyard

Internal Thread

Protect mini connectors when not in use.

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

	Thread
For Face Dia.	Size	Type	Material	Color	Temp. Range, °F	Includes		Each
External Thread
0.55"	7/8"-16	UNS	Epoxy-Coated Zinc	Black	0° to 220°	Lanyard	00000000	000000
0.7"	1"-16	UNS	Epoxy-Coated Zinc	Black	0° to 220°	Lanyard	00000000	00000
0.8"	1 1/8"-16	UNS	Epoxy-Coated Zinc	Black	0° to 220°	Lanyard	00000000	00000
0.87"	1 3/8"-16	UNS	Anodized Aluminum	__	-40° to 190°	__	0000000	00000
Internal Thread
0.55"	7/8"-16	UNS	Anodized Aluminum	__	0° to 220°	Lanyard	00000000	00000
0.7"	1"-16	UNS	Anodized Aluminum	__	0° to 220°	Lanyard	00000000	00000
0.8"	1 1/8"-16	UNS	Anodized Aluminum	__	0° to 220°	Lanyard	00000000	00000
0.87"	1 3/8"-16	UNS	Anodized Aluminum	__	-40° to 190°	__	0000000	00000

Caps for Harsh Environment Mini Connectors

External Thread with Lanyard

Internal Thread with Lanyard

Protect mini connectors when not in use. These caps are stainless steel for excellent corrosion resistance.

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

	Thread
For Face Dia.	Size	Type	Material	Temp. Range, °F		Each
External Thread
0.55"	7/8"-16	UNS	Stainless Steel	0° to 220°	00000000	000000
0.7"	1"-16	UNS	Stainless Steel	0° to 220°	00000000	00000
0.8"	1 1/8"-16	UNS	Stainless Steel	0° to 220°	00000000	00000
Internal Thread
0.55"	7/8"-16	UNS	Stainless Steel	0° to 220°	00000000	00000
0.7"	1"-16	UNS	Stainless Steel	0° to 220°	00000000	00000
0.8"	1 1/8"-16	UNS	Stainless Steel	0° to 220°	00000000	00000

Caps for Mil. Spec. Screw-Together Connectors

External Thread

Internal Thread

Protect Mil. Spec. connectors when not in use.

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

Thread
Size	Type	Material	Temp. Range, °F		Each
External Thread
1 3/4"-18	UNS	Cadmium-Plated Aluminum	-65° to 255°	0000000	000000
Internal Thread
1 3/4"-18	UNS	Cadmium-Plated Aluminum	-65° to 255°	0000000	00000

Caps for Washdown USB Cords

Screw-Together Cap

Screw these caps onto the socket end of washdown USB cords.

Screw-together caps maintain an IP67 rating when cords are not in use.

	Thread
Housing Connection Type	Size	Type	Material	Environment	Environmental Rating	Color		Each
Screw Together	13/16"-28	UNS	Plastic	Dusty, Submersible, Washdown	IP67	Black	000000	00000

Threaded Round Plugs for 37° Flared Tube

Polyethylene

Designed to fit into 37° flared connections such as those found on JIC and SAE fittings, these plugs protect internally threaded connections from contaminants during fabrication and storage. Install them manually.

Polyethylene plugs resist chemicals better than aluminum plugs.

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

Polyethylene Plastic
Thread Size	For Tube OD	Ht.	Max. Temp., °F	Hardness	Color	Pkg. Qty.		Pkg.
1 1/16"-12	3/4"	7/8"	150°	Durometer 40D	Red	100	0000000	000000
1 5/16"-12	1"	15/16"	150°	Durometer 40D	Red	50	0000000	00000

Threaded Caps

Plastic

Protect externally threaded components from contaminants during fabrication and storage.

Plastic caps resist corrosion better than aluminum caps.

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

Thread
Size	Type	For OD	Inside Ht.	Max. Temp., °F	Color	Pkg. Qty.		Pkg.
Plastic
For Straight-Thread Pipe
1/4"-36	UNS	1/4"	7/32"	150°	Red	100	00000000	00000
7/16"-24	UNS	7/16"	19/64"	150°	Red	100	00000000	0000
3/4"-18	UNS	3/4"	11/16"	150°	Red	100	00000000	00000
7/8"-18	UNS	7/8"	25/32"	150°	Red	100	00000000	00000
1"-14	UNS	1"	25/32"	150°	Red	100	0000000	00000
1 1/16"-14	UNS	1 1/16"	3/4"	150°	Red	100	00000000	00000