13/16" Head Diameter Grinding Bits

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System of Measurement

Shank Diameter

Shape

For Use On

Color

Grit Rating

Head Length

Material

Tip Style

Tooth Style

DFARS Specialty Metals

Exempt

Export Control Classification Number (ECCN)

EAR99

For Use With

Grinders for Bits and Burs

Maximum Rotation Speed

REACH

RoHS

Rotation Speed

10,000 rpm to 19,999 rpm

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

Surface Texture

Grit

Shank Length

Abrasive Material

Length

Shank Flexibility

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7 Products

Grinding Bits for Metals

Style

Made of aluminum oxide, these bits are well suited for use on most metals and materials that are not heat sensitive.

Bits are also known as mounted points and die grinder bits. Head diameter is measured at the widest point.

Caution: As bit shank is exposed beyond _1/2", maximum safe rpm decreases significantly. Refer to ANSI standard B7.1. Use only accessories that have a greater rpm rating than the maximum speed of the grinder you choose.

Flat-Top Cone

Style

		Head				Abrasive
	Style	Dia.	Lg.	Max. Rotation Speed, rpm	Shape No.	Material	Bond Material	Shank Lg.	Choose a Grit (Surface Texture)	Pkg. Qty.		Pkg.
For Steel, Stainless Steel, and Iron







				1/4" Diameter Shank

				19	13/16"	1 3/4"	18,750	A1SS	Aluminum Oxide	Vitrified Clay	1 1/2"	36 (Rough) Blue-Gray, 60 (Rough) Orange, 120 (Smooth) Blue	5	4522A256	000000

Burs for Wood and Rubber

Pointed teeth cut wood and rubber quickly without clogging.

Cylinder with Flat Tip

Flat cylinder burs are for straight edges and flat surfaces.

		Head						Pointed Tooth (Coarse Grit)		Pointed Tooth (Fine Grit)
	Shank Dia.	Dia.	Lg.	Overall Lg.	For Use On	Max. Rotation Speed, rpm	Color		Each		Each
Carbide



		1/4"	13/16"	1 1/4"	2 1/2"	Wood, Rubber	10,000	Blue	———	0	4257A832	000000


		1/4"	13/16"	1 1/4"	2 1/2"	Wood, Rubber	10,000	Red	4257A831	000000	———	0

Cylinder with Round Tip

Round cylinder burs are for curved surfaces and slots and round-bottom holes and slots.

		Head						Pointed Tooth (Coarse Grit)		Pointed Tooth (Fine Grit)
	Shank Dia.	Dia.	Lg.	Overall Lg.	For Use On	Max. Rotation Speed, rpm	Color		Each		Each
Carbide



		1/4"	13/16"	1 1/4"	2 1/2"	Wood, Rubber	10,000	Blue	———	0	4257A772	000000


		1/4"	13/16"	1 1/4"	2 1/2"	Wood, Rubber	10,000	Red	4257A771	000000	———	0

Tapered Cone with Round Tip

Round tapered cone burs are for tapered holes and slots with rounded bottoms.

		Head							Pointed Tooth (Coarse Grit)		Pointed Tooth (Fine Grit)
	Shank Dia.	Dia.	Lg.	Tip Angle	Overall Lg.	For Use On	Max. Rotation Speed, rpm	Color		Each		Each
Carbide



		1/4"	13/16"	1 3/8"	15°	2 1/2"	Wood, Rubber	10,000	Blue	———	0	4257A912	000000


		1/4"	13/16"	1 3/8"	15°	2 1/2"	Wood, Rubber	10,000	Red	4257A911	000000	———	0