Compass Cutters | McMaster-Carr

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For Use On

For Maximum Fiber Thickness

Cutting Pattern

Cutting Diameter

For Maximum Rubber Thickness

Diameter

Power Source

For Maximum PTFE Thickness

Material

Ruler System of Measurement

Inch

Metric

For Maximum Graphite Thickness

For Use With

U.S.–Mexico–Canada Agreement (USMCA) Qualifying

Yes

Export Control Classification Number (ECCN)

EAR99

For Maximum Cork Thickness

REACH

RoHS

Compliant with Exemptions

Not Compliant

Cutting Board Width

18"

457 mm

DFARS Specialty Metals

Blade Material

Shank Shape

Body Material

Bar Material

Bar Length

Blade Type Included

Cutting Board Length

44 Products

Circular Gasket Cutters


Style A	Style B	Style C

Cut soft materials such as PTFE, fiber, rubber, and cork.

(A) Powered by Hand (Manual), Hand Drill

Style A

Styles A and B simultaneously cut inside and outside diameters.

	For Max. Thick.						Shank
Cutting Dia. Range	PTFE	Graphite	Fiber	Rubber	Cork	Blade Material	Size	Shape	Bar Lg.	Includes		Each
5/8" to 6 1/2"	1/4"	1/4"	1/4"	1/4"	1/4"	Steel	5/16"	Square	6 1/2"	Two Blades with Holder	36795A11	000000

(B) Powered by Hand (Manual), Hand Drill, Drill Press

Style B

Styles A and B simultaneously cut inside and outside diameters.

Cutters																Replacement Blades
	For Max. Thick.									Shank
Cutting Dia. Range	PTFE	Fiber	Rubber	Cork	Stainless Steel	Brass	Copper	Tin	Blade Material	Size	Shape	Bar Lg.	Includes		Each		Pair
1" to 24"	1/8"	1/8"	1/8"	1/8"	1/8"	1/8"	0.003"	1/8"	Steel	1/4"	Taper	13 1/4"	Two Blades with Holder	3077A11	0000000	3077A21	000000

Style C

Style C have a rotating blade that makes smooth, continuous cuts. The ratcheting handle also rotates, so you don’t need to twist your wrist or change your grip as you guide the blade in a circle.

Cutters											Replacement Blades
	For Max. Thick.
Cutting Dia. Range	PTFE	Fiber	Rubber	Cork	Blade Material	Bar Lg.	Includes	Features		Each	Pkg. Qty.		Pkg.
1 1/2" to 8 3/4"	3/16"	3/16"	3/16"	3/16"	Steel	5 7/8"	One Blade with Holder	Ratchet Handle	8848N11	000000	2	49255A112	00000

Precise-Cut Circular Gasket Cutters with Cutting Board

Cutter Shown in Use on Cutting Board


Style A	Style B

Style C

Ensure precise cuts with a measuring scale and adjustable blade depth. A rectangular base keeps material flat during cutting to prevent tears. The cutting board reseals itself after each cut.

(A) Includes One Curved, One Pointed, One Rounded-Tip, One Angled-Tip Blades

Image of Product. Front orientation. Gasket Cutters. Precise-Cut Circular Gasket Cutters with Cutting Board, Style A.

Style A cutters also cut strips up to 3_5/8" wide.

Curved blades are for cutting thin materials.

Pointed blades are for general purpose cutting.

Rounded-tip blades are for heavy duty cutting.

Angled-tip blades are for cutting rigid materials.

Bolt Hole Locators—Bolt-hole locators show you where to punch out material when making gaskets with bolt holes. They include patterns for 4, 6, 8, 12, and 16 bolt holes.

Dovetail Cutting Templates—Dovetail cutting templates are for cutting circular gaskets in sections held together by dovetail cutouts.

Cutters																Bolt Hole Locators		Dovetail Cutting Templates
		For Max. Thick.								Cutting Board
Cutting Dia. Range	Max. Cutting Wd.	PTFE	Graphite	Fiber	Rubber	Cork	Blade Material	Body Material	Ruler System of Measurement	Lg.	Wd.	Ctr. Pin Lg.	Includes		Each		Each		Each
1/4" to 6"	3 5/8"	3/4"	3/4"	3/4"	3/4"	3/4"	Steel	Plastic	Inch, Metric	6"	6"	1 3/16", 1 5/16"	Pin for Cutting Discs, Metal Case	3854A11	0000000	3870A105	000000	3870A106	000000

Replacements for Gasket Cutters


Pointed Blades	3854A21	Pkg. of 6	000000
Rounded-Tip Blades	3854A22	Pkg. of 6	00000
Curved Blades	3854A23	Pkg. of 6	00000
1-3/16" Length Center Pin	3854A31	Each	0000
1-5/16" Length Center Pin	3854A32	Each	0000
6" x 6" Cutting Board	3854A12	Each	00000

(B) Includes Six Pointed, Six Rounded Tip Blades

Pointed blades are for general purpose cutting.

Rounded-tip blades are for heavy duty cutting.

Bolt Hole Locators—Bolt-hole locators show you where to punch out material when making gaskets with bolt holes. They include patterns for 4, 6, 8, 12, and 16 bolt holes.

Dovetail Cutting Templates—Dovetail cutting templates are for cutting circular gaskets in sections held together by dovetail cutouts.

Cutters															Bolt Hole Locators		Dovetail Cutting Templates
	For Max. Thick.								Cutting Board
Cutting Dia. Range	PTFE	Graphite	Fiber	Rubber	Cork	Blade Material	Body Material	Ruler System of Measurement	Lg.	Wd.	Ctr. Pin Lg.	Includes		Each		Each		Each
1/4" to 13"	3/4"	3/4"	3/4"	3/4"	3/4"	Steel	Brass	Inch	18"	18"	1 3/16", 1 7/16", 1 11/16"	Bolt Hole Locator, Cutting Knob, Dovetail Cutting Template, Pin Insertion Handle, Plastic case	3870A101	0000000	3870A105	000000	3870A106	000000
1/4" to 25"	3/4"	3/4"	3/4"	3/4"	3/4"	Steel	Brass	Inch	18"	18"	1 3/16", 1 7/16", 1 11/16"	Bolt Hole Locator, Cutting Knob, Dovetail Cutting Template, Extension Arm, Pin Insertion Handle, Plastic case	3870A21	000000	3870A105	00000	3870A106	00000
1/4" to 37"	3/4"	3/4"	3/4"	3/4"	3/4"	Steel	Brass	Inch	18"	18"	1 3/16", 1 7/16", 1 11/16"	Bolt Hole Locator, Cutting Knob, Dovetail Cutting Template, Pin Insertion Handle, Plastic case, Two Extension Arms	3870A22	000000	3870A105	00000	3870A106	00000
1/4" to 49"	3/4"	3/4"	3/4"	3/4"	3/4"	Steel	Brass	Inch	18"	18"	1 3/16", 1 7/16", 1 11/16"	Bolt Hole Locator, Cutting Knob, Dovetail Cutting Template, Pin Insertion Handle, Plastic case, Three Extension Arms	3870A102	000000	3870A105	00000	3870A106	00000
1/4" to 61"	3/4"	3/4"	3/4"	3/4"	3/4"	Steel	Brass	Inch	18"	18"	1 3/16", 1 7/16", 1 11/16"	Bolt Hole Locator, Cutting Knob, Dovetail Cutting Template, Four Extension Arms, Pin Insertion Handle, Plastic case	3870A103	000000	3870A105	00000	3870A106	00000
6 mm to 635 mm	19 mm	19 mm	19 mm	19 mm	19 mm	Steel	Brass	Metric	457 mm	457 mm	1.2 mm, 1.4 mm, 1.7 mm	Bolt Hole Locator, Cutting Knob, Dovetail Cutting Template, Extension Arm, Pin Insertion Handle, Plastic case	3870A104	000000	3870A105	00000	3870A106	00000

Replacements for Gasket Cutters


Pointed Blades	3870A2	Pkg. of 6	000000
Rounded-Tip Blades	3870A7	Pkg. of 6	00000
1-3/16" Long Center Pin	3852A51	Each	00000
1-7/16" Long Center Pin	3852A52	Each	00000
1-11/16" Long Center Pin	3852A53	Each	00000
18" x 18" Cutting Board	3852A3	Each	00000
24" x 24" Cutting Board	3870A108	Each	00000
30" x 30" Cutting Board	3870A109	Each	00000

Pointed blades are for general purpose cutting.

Rounded-tip blades are for heavy duty cutting.

Bolt Hole Locators—Bolt-hole locators show you where to punch out material when making gaskets with bolt holes. They include patterns for 4, 6, 8, 12, and 16 bolt holes.

Dovetail Cutting Templates—Dovetail cutting templates are for cutting circular gaskets in sections held together by dovetail cutouts.

Cutters															Bolt Hole Locators		Dovetail Cutting Templates
	For Max. Thick.								Cutting Board
Cutting Dia. Range	PTFE	Graphite	Fiber	Rubber	Cork	Blade Material	Body Material	Ruler System of Measurement	Lg.	Wd.	Ctr. Pin Lg.	Includes		Each		Each		Each
1" to 37"	3/4"	3/4"	3/4"	3/4"	3/4"	Steel	Plastic	Inch, Metric	18"	18"	1 3/16", 1 7/16", 1 11/16"	Piercing Tool, Plastic case, Two Extension Arms	3852A31	0000000	3870A105	000000	3870A106	000000

Accessories and Replacements for Gasket Cutters

Gasket Cutter Extension Arms—Extension arms are for cutting larger diameter gaskets with Style C.


Pointed Blades	3854A17	Pkg. of 6	000000
Rounded-Tip Blades	3854A18	Pkg. of 6	00000
1-3/16" Long Center Pin	3852A51	Each	00000
1-7/16" Long Center Pin	3852A52	Each	00000
1-11/16" Long Center Pin	3852A53	Each	00000
18" x 18" Cutting Board	3852A3	Each	00000
24" x 24" Cutting Board	3870A108	Each	00000
30" x 30" Cutting Board	3870A109	Each	00000
37" to 49" Cutting Diameter Extension Arm	3852A2	Each	00000

Utility-Knife Style Circular Gasket and Hole Cutters

When the blade gets dull, snap it off to expose a new, sharp edge. This cutter has a utility knife mounted on a radius bar for precise cuts.

Cutters									Replacement Blades
	For Max. Thick.
Cutting Dia. Range	PTFE	Fiber	Rubber	Cork	Blade Material	No. of Segments per Blade		Each	Pkg. Qty.		Pkg.
2 13/16" to 12"	1/2"	1/2"	1/2"	1/2"	Steel	8	24555A7	000000	10	38505A22	000000

Drywall Circle Cutters

Cut perfect circles up to 16" in diameter to create openings for pipes, conduit, or lighting fixtures.

For Max. Dia.	Material		Each
16"	Steel	7609T18	000000

Adjustable-Diameter Hole Saws with Debris Guard

Hole Saw in Use

Image of Product. Front orientation. Hole Saws. Adjustable-Diameter Hole Saws with Debris Guard.

Replacement Blades

Cut a variety of hole sizes in ceilings, walls, floors, and other surfaces without all the mess. These hole saws have two adjustable blades that bite into drywall, plaster, plastic and wood to make larger holes than a drill bit alone. They also have a clear debris shield to catch flying chips and collect dust. The shield’s rubber seal maintains contact with the surface you’re cutting, which keeps the debris contained and prevents damage to surrounding material. Use these hole saws to make perfectly round holes to install a range of cylindrical items from cables to doorknobs to recessed lighting. Power them using a drill press or portable drill.

Vacuum Port—Hole saws with a vacuum port on the debris shield can connect to a vacuum hose to suck up debris as you cut, making cleanup even easier.

	Hole Saws															Replacement Blades
					Pilot Drill			Shield
	Dia.	Arbor Size	Arbor Shank Shape	Body Material	Dia.	Lg.	Material	Dia.	Material	Blade Material	Features	For Vacuum Hose Dia.	Includes		Each	Pkg. Qty.		Pkg.
For Drywall, Plaster, Plastic, and Wood







				1 1/16" Cutting Depth

				2 13/64" to 8 19/32"	3/8"	Hex	Steel	15/64"	2 3/16"	High-Speed Steel	9 1/2"	Polycarbonate	Carbon Steel	Built-In Arbor, Clear Debris Shield with Rubber Seal, Vacuum Port	2 1/2"	Blades Hex Nuts Pilot Drill Spring	5457N141	0000000	2	5457N142	000000


				2 13/64" to 10"	3/8"	Hex	Steel	15/64"	1 11/16"	High-Speed Steel	11 3/4"	Polycarbonate	Carbon Steel	Built-In Arbor, Clear Debris Shield with Rubber Seal	—	Blades Hex Nuts Pilot Drill Spring	5457N111	000000	2	5457N112	00000

Adjustable Large-Diameter Hole Saws for Sheet Metal

Attach these saws to your portable drill to cut a range of large diameter hole sizes in sheet metal. The frame rotates around a pilot pin inserted into a _1/4" drilled hole. They include a high-speed steel bit.

	Hole Saws									Replacement Cutting Bits
		Bit
	Dia.	Dia.	Material	Bit Shank Size	Bit Shank Shape	Body Material	Includes		Each		Each
For Aluminum, Brass, Bronze, and Steel







				1/2" Cutting Depth

				2" to 12"	3/16"	High-Speed Steel	1/4"	Round	Steel	Cutting Bit	30885A12	000000	30885A18	000000


				2" to 20"	3/16"	High-Speed Steel	1/4"	Round	Steel	Cutting Bit	30885A14	000000	30885A18	00000

Adjustable-Diameter Hole Saws for Sheet Metal

Use these saws with a drill press to cut a variety of hole sizes in sheet metal. They include a high-speed steel bit for cutting aluminum, brass, bronze, and steel.

				Bit			Pilot Drill
	Dia.	Arbor Size	Arbor Shank Shape	Dia.	Material	Body Material	Dia.	Lg.	Material	Includes	Max. Rotation Speed, rpm		Each
For Aluminum, Brass, Bronze, and Steel







				1" Cutting Depth

				1" to 6"	3/8"	Round	3/16"	High-Speed Steel	Steel	1/4"	1 9/16"	High-Speed Steel	Cutting Bit Pilot Drill	500	8830A13	000000


				1 3/4" to 7 7/8"	1/2"	Round	1/4"	High-Speed Steel	Steel	1/4"	1 9/16"	High-Speed Steel	Cutting Bit Pilot Drill	500	3082A2	00000