Reducing Butt Splices | McMaster-Carr

	For Wire Gauge For Wire Gauge

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	Wire Connection Type Wire Connection Type


Crimp On	Solder

	Color Color

Blue

Red

Yellow

Gray with Yellow Stripe

Gray with Red Stripe

Red with Red Stripe and
White Stripe

Gray with Blue Stripe

Yellow with Yellow Stripe and
Blue Stripe

Blue with Blue Stripe and Red
Stripe

Pink with Pink Stripe and
Yellow Stripe

	Insulation Insulation


Fully Insulated	Noninsulated

	Insulation Material Insulation Material

Vinyl Plastic

Polyolefin Plastic

Nylon Plastic

	Length Length

	Maximum Voltage Maximum Voltage

600V AC

600V DC

Not Rated

	Stripe Color Stripe Color

	Red
	Yellow
	Blue

	Maximum Temperature Maximum Temperature

220° F

230° F

300° F

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

DFARS Specialty Metals
COTS-Exempt

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

RoHS Compliant

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

REACH Compliant

	Shrink Temperature Shrink Temperature

195° F

275° F

	Specifications Met Specifications Met

CSA

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15 Products

Insulated Reducing Crimp-On Butt Splices

A plastic cover fully insulates these splices. Use them to connect two wires of different sizes—one end of the splice is larger than the other. They are color-coded according to the larger wire gauge size and have a colored stripe to indicate the size of the smaller end.

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

For Wire Gauge	Lg.	Color	Insulation Material	Terminal Material	Max. Voltage	Max. Temperature, °F	Pkg. Qty.		Pkg.
16-14 to 22-18	1.1"	Blue with Red Stripe	Vinyl Plastic	Tin-Plated Copper	600V DC	220°	10	0000000	000000
12-10 to 16-14	1.3"	Yellow with Blue Stripe	Vinyl Plastic	Tin-Plated Copper	600V DC	220°	10	0000000	00000
8 to 12-10	1.5"	Red with Yellow Stripe	Vinyl Plastic	Tin-Plated Copper	600V DC	220°	10	0000000	00000
6 to 8	1.8"	Blue with Red Stripe	Vinyl Plastic	Tin-Plated Copper	600V DC	220°	5	0000000	00000

Noninsulated Reducing Crimp-On Butt Splices

These splices can withstand higher temperatures than insulated splices. Use them to connect two wires of different sizes—one end of the splice is larger than the other. They have a colored stripe on the smaller end.

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

For Wire Gauge	Lg.	Color	Terminal Material	Max. Temperature, °F	Specifications Met	Pkg. Qty.		Pkg.
16-14 to 22-18	0.7"	Gray with Red Stripe	Tin-Plated Copper	300°	UL Listed, CSA Certified	10	000000	00000
12-10 to 16-14	0.8"	Gray with Blue Stripe	Tin-Plated Copper	300°	UL Listed, CSA Certified	10	000000	0000
8 to 12-10	0.9"	Gray with Yellow Stripe	Tin-Plated Copper	300°	UL Listed, CSA Certified	10	000000	00000
6 to 8	1.1"	Gray with Red Stripe	Tin-Plated Copper	300°	UL Listed, CSA Certified	10	000000	00000

Heat-Shrink Reducing Crimp-On Butt Splices

When heat is applied, adhesive-lined insulation shrinks and bonds to the wires, creating a watertight seal. Use these splices to connect two wires of different sizes—one end of the splice is larger than the other. They are color-coded according to the larger wire gauge size and have a colored stripe to indicate the size of the smaller end.

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

For Wire Gauge	Lg.	Color	Insulation Material	Terminal Material	Shrink Temperature, °F	Max. Voltage	Max. Temperature, °F	Pkg. Qty.		Pkg.
16-14 to 22-18	1.6"	Blue with Red Stripe	Nylon Plastic	Tin-Plated Copper	195°	600V AC 600V DC	220°	10	0000000	000000
12-10 to 16-14	1.8"	Yellow with Blue Stripe	Nylon Plastic	Tin-Plated Copper	195°	600V AC 600V DC	220°	5	0000000	00000
8 to 12-10	1.8"	Red with Red and Yellow Stripe	Polyolefin Plastic	Tin-Plated Copper	195°	600V AC	220°	10	0000000	00000

Solder-Loaded Heat-Shrink Reducing Crimp-On Butt Splices

Create a water- and corrosion-resistant seal while connecting two different sizes of wire. When these splices are heated, the solder inside melts and the adhesive liner shrinks and bonds to form the seal. Because of this seal, these splices are the most secure, electrically conductive splices we offer that connect two different sizes of wire. All have a stripe on the smaller end that’s a different color than the body, so you can easily match your wire to the right connector.

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

For Wire Gauge	Length	Color	Insulation Material	Terminal Material	Shrink Temperature, °F	Maximum Voltage	Maximum Temperature, °F	Pkg. Qty.		Pkg.
22-18 to 26-22	1.5"	Red with Red Stripe and White Stripe	Polyolefin Plastic	Tin-Plated Copper	275°	600V AC 600V DC	230°	10	0000000	000000
16-14 to 22-18	1.5"	Blue with Blue Stripe and Red Stripe	Polyolefin Plastic	Tin-Plated Copper	275°	600V AC 600V DC	230°	10	0000000	00000
12-10 to 16-14	1.5"	Yellow with Yellow Stripe and Blue Stripe	Polyolefin Plastic	Tin-Plated Copper	275°	600V AC 600V DC	230°	10	0000000	00000
8 to 12-10	1.75"	Pink with Pink Stripe and Yellow Stripe	Polyolefin Plastic	Tin-Plated Copper	275°	600V AC 600V DC	230°	10	0000000	00000