90° Angle Insulation | McMaster-Carr

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	Shape Shape	Show

90° Angle

	Shape Shape	Hide

	System of Measurement System of Measurement

Inch

	Wall Thickness Wall Thickness

	Material Material

Fiberglass

Garolite

	Grade Grade

GPO3

G-9

	Length Length

3 ft.

6 ft.

	Performance Properties Performance Properties

	Color Color

	Gray
	Red

	Flexibility Flexibility

	Rigid

	Specifications Met Specifications Met

UL 94

	Leg Edge Shape Leg Edge Shape

Round

Square

	Maximum Temperature Maximum Temperature

Less than 500° F

	Impact Strength Rating Impact Strength Rating

Excellent

	Impact Strength Impact Strength

5.5-7.0 ft.-lbs./in.

8.2-12 ft.-lbs./in.

	Texture Texture

	Smooth

	Electrical Insulation Rating Electrical Insulation Rating

Good

	Resin Material Resin Material

Plastic

Polyester

	For Use Outdoors For Use Outdoors

Yes

	Hardness Rating Hardness Rating

Hard

Extra Hard

	Compressive Strength Compressive Strength

25,000-70,000 psi

32,000-42,000 psi

	Density Density

0.063 lbs./cu. in.

0.069 lbs./cu. in.

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

DFARS Specialty Metals
COTS-Exempt

	Flexural Strength Flexural Strength

23,200-31,000 psi

35,000-55,000 psi

	Water Absorption Rating Water Absorption Rating

Poor

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About Composites

Color: Gray
Maximum Temperature: 280° F
Tensile Strength: 30,000-37,000 psi (Excellent)
Impact Strength: 5.5-7.0 ft.-lbs./in. (Excellent)
Hardness: Rockwell M120 (Extra Hard)
For Use Outdoors: Yes
Specifications Met: UL 94 V-0

Machine these angles into arc barriers, switch mounts, and components for circuit breakers and electrical equipment. They resist carrying electric currents in dry or humid areas, even when exposed to sudden electric discharge. Strong, they’re also good for making terminal boards and other structural parts. They won’t crack if hit, and they resist breaking while carrying heavy loads. Meets UL 94 V-0 for flame retardance.

Garolite G-9 is also known as electrical-grade Garolite, melamine-grade industrial laminate, phenolic, and Bakelite.

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

Outside				Inside		36" Length
Width	Width Tolerance	Height	Height Tolerance	Width	Height		Each
1/8" Wall Thick. (-0.03" to 0.03")
1"	-0.125" to 0.125"	1"	-0.125" to 0.125"	7/8"	7/8"	00000000	0000000
1 1/2"	-0.187" to 0.187"	1 1/2"	-0.187" to 0.187"	1 3/8"	1 3/8"	00000000	000000
2"	-0.25" to 0.25"	2"	-0.25" to 0.25"	1 7/8"	1 7/8"	00000000	000000
3/16" Wall Thick. (-0.04" to 0.04")
1"	-0.125" to 0.125"	1"	-0.125" to 0.125"	13/16"	13/16"	00000000	000000
1 1/2"	-0.187" to 0.187"	1 1/2"	-0.187" to 0.187"	1 5/16"	1 5/16"	00000000	000000
2"	-0.25" to 0.25"	2"	-0.25" to 0.25"	1 13/16"	1 13/16"	00000000	000000
1/4" Wall Thick. (-0.05" to 0.05")
1"	-0.125" to 0.125"	1"	-0.125" to 0.125"	3/4"	3/4"	00000000	000000
1 1/2"	-0.187" to 0.187"	1 1/2"	-0.187" to 0.187"	1 1/4"	1 1/4"	00000000	000000
2"	-0.25" to 0.25"	2"	-0.25" to 0.25"	1 3/4"	1 3/4"	00000000	000000

Arc-Resistant GPO3 Fiberglass 90° Angles

Color: Red
Tensile Strength: 10,000-15,000 psi (Good)
Impact Strength: 8.2-12 ft.-lbs./in. (Excellent)
Hardness: See table
For Use Outdoors: No
Specifications Met: UL 94 V-0

Because these GPO3 fiberglass 90° angles are arc and track resistant, they are often used for electrical applications in humid environments. They offer better electrical insulation properties than FRP fiberglass. Made of fiberglass-reinforced polyester, they're also called polyester-grade industrial laminate.

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

Outside				Inside
Wd.	Wd. Tolerance	Ht.	Ht. Tolerance	Wd.	Ht.	Hardness	Straightness Tolerance		Each
3 ft. Lg.
1/8" Wall Thick. (-0.0200" to 0.0200")
1"	-0.062" to 0.062"	1"	-0.062" to 0.062"	7/8"	7/8"	Rockwell M95 (Hard)	0.050" per ft.	0000000	00000
1 1/4"	-0.062" to 0.062"	1 1/4"	-0.062" to 0.062"	1 1/8"	1 1/8"	Rockwell M95 (Hard)	0.050" per ft.	0000000	0000
1 1/2"	-0.062" to 0.062"	1 1/2"	-0.062" to 0.062"	1 3/8"	1 3/8"	Rockwell M95 (Hard)	0.050" per ft.	0000000	00000
3/16" Wall Thick. (-0.0200" to 0.0200")
1 1/4"	-0.062" to 0.062"	1 1/4"	-0.062" to 0.062"	1 1/16"	1 1/16"	Rockwell M95 (Hard)	0.050" per ft.	0000000	00000
1 1/2"	-0.062" to 0.062"	1 1/2"	-0.062" to 0.062"	1 5/16"	1 5/16"	Rockwell M95 (Hard)	0.050" per ft.	0000000	00000
2"	-0.062" to 0.062"	2"	-0.062" to 0.062"	1 13/16"	1 13/16"	Rockwell M95 (Hard)	0.050" per ft.	0000000	00000
2 1/4"	-0.062" to 0.062"	1 1/2"	-0.062" to 0.062"	2 1/16"	1 5/16"	Rockwell M95 (Hard)	0.050" per ft.	0000000	00000
2 1/2"	-0.062" to 0.062"	1 1/4"	-0.062" to 0.062"	2 5/16"	1 1/16"	Rockwell M95 (Hard)	0.050" per ft.	0000000	00000
2 9/16"	-0.094" to 0.094"	1 5/8"	-0.094" to 0.094"	2 3/8"	1 7/16"	Barcol 50 (Hard)	0.050" per ft.	0000000	00000
4"	-0.094" to 0.094"	1 5/8"	-0.094" to 0.094"	3 13/16"	1 7/16"	Barcol 50 (Hard)	0.050" per ft.	0000000	00000
1/4" Wall Thick. (-0.0200" to 0.0200")
1 1/2"	-0.062" to 0.062"	1 1/2"	-0.062" to 0.062"	1 1/4"	1 1/4"	Rockwell M95 (Hard)	0.050" per ft.	0000000	00000
2"	-0.094" to 0.094"	2"	-0.094" to 0.094"	1 3/4"	1 3/4"	Barcol 50 (Hard)	0.050" per ft.	0000000	00000
2 3/4"	-0.062" to 0.062"	2"	-0.062" to 0.062"	2 1/2"	1 3/4"	Rockwell M95 (Hard)	0.050" per ft.	0000000	00000
3"	-0.094" to 0.094"	2 3/4"	-0.094" to 0.094"	2 3/4"	2 1/2"	Barcol 50 (Hard)	0.050" per ft.	0000000	00000
3"	-0.062" to 0.062"	3"	-0.062" to 0.062"	2 3/4"	2 3/4"	Rockwell M95 (Hard)	0.050" per ft.	0000000	00000
3/8" Wall Thick. (-0.0250" to 0.0250")
1 3/4"	-0.062" to 0.062"	2"	-0.062" to 0.062"	1 3/8"	1 5/8"	Rockwell M95 (Hard)	0.050" per ft.	0000000	00000
3"	-0.062" to 0.062"	3"	-0.062" to 0.062"	2 5/8"	2 5/8"	Rockwell M95 (Hard)	0.050" per ft.	0000000	00000
1/2" Wall Thick. (-0.0250" to 0.0250")
2 1/4"	-0.062" to 0.062"	3"	-0.062" to 0.062"	1 3/4"	2 1/2"	Rockwell M95 (Hard)	0.050" per ft.	0000000	00000
6"	-0.062" to 0.062"	3"	-0.062" to 0.062"	5 1/2"	2 1/2"	Rockwell M95 (Hard)	0.050" per ft.	0000000	000000
6 ft. Lg.
1/8" Wall Thick. (-0.0200" to 0.0200")
1"	-0.062" to 0.062"	1"	-0.062" to 0.062"	7/8"	7/8"	Rockwell M95 (Hard)	0.050" per ft.	0000000	00000
1 1/4"	-0.062" to 0.062"	1 1/4"	-0.062" to 0.062"	1 1/8"	1 1/8"	Rockwell M95 (Hard)	0.050" per ft.	0000000	00000
1 1/2"	-0.062" to 0.062"	1 1/2"	-0.062" to 0.062"	1 3/8"	1 3/8"	Rockwell M95 (Hard)	0.050" per ft.	0000000	00000
3/16" Wall Thick. (-0.0200" to 0.0200")
1 1/4"	-0.062" to 0.062"	1 1/4"	-0.062" to 0.062"	1 1/16"	1 1/16"	Rockwell M95 (Hard)	0.050" per ft.	0000000	00000
1 1/2"	-0.062" to 0.062"	1 1/2"	-0.062" to 0.062"	1 5/16"	1 5/16"	Rockwell M95 (Hard)	0.050" per ft.	0000000	00000
2"	-0.062" to 0.062"	2"	-0.062" to 0.062"	1 13/16"	1 13/16"	Rockwell M95 (Hard)	0.050" per ft.	0000000	00000
2 1/4"	-0.062" to 0.062"	1 1/2"	-0.062" to 0.062"	2 1/16"	1 5/16"	Rockwell M95 (Hard)	0.050" per ft.	0000000	00000
2 1/2"	-0.062" to 0.062"	1 1/4"	-0.062" to 0.062"	2 5/16"	1 1/16"	Rockwell M95 (Hard)	0.050" per ft.	0000000	00000
2 9/16"	-0.094" to 0.094"	1 5/8"	-0.094" to 0.094"	2 3/8"	1 7/16"	Barcol 50 (Hard)	0.050" per ft.	0000000	00000
4"	-0.094" to 0.094"	1 5/8"	-0.094" to 0.094"	3 13/16"	1 7/16"	Barcol 50 (Hard)	0.050" per ft.	0000000	00000
1/4" Wall Thick. (-0.0200" to 0.0200")
1 1/2"	-0.062" to 0.062"	1 1/2"	-0.062" to 0.062"	1 1/4"	1 1/4"	Rockwell M95 (Hard)	0.050" per ft.	0000000	00000
2"	-0.094" to 0.094"	2"	-0.094" to 0.094"	1 3/4"	1 3/4"	Barcol 50 (Hard)	0.050" per ft.	0000000	00000
2 3/4"	-0.062" to 0.062"	2"	-0.062" to 0.062"	2 1/2"	1 3/4"	Rockwell M95 (Hard)	0.050" per ft.	0000000	00000
3"	-0.094" to 0.094"	2 3/4"	-0.094" to 0.094"	2 3/4"	2 1/2"	Barcol 50 (Hard)	0.050" per ft.	0000000	00000
3"	-0.062" to 0.062"	3"	-0.062" to 0.062"	2 3/4"	2 3/4"	Rockwell M95 (Hard)	0.050" per ft.	0000000	00000
3/8" Wall Thick. (-0.0250" to 0.0250")
1 3/4"	-0.062" to 0.062"	2"	-0.062" to 0.062"	1 3/8"	1 5/8"	Rockwell M95 (Hard)	0.050" per ft.	0000000	00000
3"	-0.062" to 0.062"	3"	-0.062" to 0.062"	2 5/8"	2 5/8"	Rockwell M95 (Hard)	0.050" per ft.	0000000	00000
1/2" Wall Thick. (-0.0250" to 0.0250")
2 1/4"	-0.062" to 0.062"	3"	-0.062" to 0.062"	1 3/4"	2 1/2"	Rockwell M95 (Hard)	0.050" per ft.	0000000	000000
6"	-0.062" to 0.062"	3"	-0.062" to 0.062"	5 1/2"	2 1/2"	Rockwell M95 (Hard)	0.050" per ft.	0000000	000000

About Composites

Arc-Resistant Garolite G-9 Angles

Arc-Resistant GPO3 Fiberglass 90° Angles

Arc-Resistant Garolite G-9 Angles

Arc-Resistant GPO3 Fiberglass 90° Angles