Grinding Bits for Metals
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.
For technical drawings and 3-D models, click on a part number.
Head | Abrasive | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Dia. | Lg. | Max. Speed, rpm | Shape No. | Material | Bond Material | Shank Lg. | Grit (Surface Texture) | Pkg. Qty. | Pkg. | ||
1/8" Shank Dia. | |||||||||||
For Steel, Stainless Steel, Iron | |||||||||||
| 1 | 3/8" | 1" | 26,250 | W178 | Aluminum Oxide | Vitrified Clay | 1 1/2" | 36 (Rough) Blue-Gray | 5 | 00000000 | 00000 |
| 1 | 1/2" | 3/4" | 26,250 | W186 | Aluminum Oxide | Vitrified Clay | 1 1/2" | 36 (Rough) Blue-Gray | 5 | 00000000 | 0000 |
| 1 | 1/2" | 1" | 20,620 | W187 | Aluminum Oxide | Vitrified Clay | 1 1/2" | 36 (Rough) Blue-Gray | 5 | 00000000 | 0000 |
1/4" Shank Dia. | |||||||||||
For Steel, Stainless Steel, Iron | |||||||||||
| 1 | 3/8" | 1" | 55,200 | W178 | Aluminum Oxide | Vitrified Clay | 1 1/2" | 36 (Rough) Blue-Gray | 5 | 00000000 | 0000 |
| 1 | 1/2" | 3/4" | 51,000 | W186 | Aluminum Oxide | Vitrified Clay | 1 1/2" | 36 (Rough) Blue-Gray | 5 | 00000000 | 0000 |
| 1 | 1/2" | 1" | 40,500 | W187 | Aluminum Oxide | Vitrified Clay | 1 1/2" | 36 (Rough) Blue-Gray | 5 | 00000000 | 0000 |
| 1 | 5/8" | 1" | 35,250 | W196 | Aluminum Oxide | Vitrified Clay | 1 1/2" | 36 (Rough) Blue-Gray | 5 | 00000000 | 0000 |
| 1 | 5/8" | 2" | 21,000 | W197 | Aluminum Oxide | Vitrified Clay | 1 1/2" | 36 (Rough) Blue-Gray | 5 | 00000000 | 00000 |
| 1 | 3/4" | 3/4" | 47,250 | A39 | Aluminum Oxide | Vitrified Clay | 1 1/2" | 36 (Rough) Blue-Gray | 5 | 00000000 | 0000 |
| 1 | 3/4" | 1" | 34,500 | W205 | Aluminum Oxide | Vitrified Clay | 1 1/2" | 36 (Rough) Blue-Gray | 5 | 00000000 | 0000 |
| 1 | 3/4" | 1 1/4" | 28,720 | W206 | Aluminum Oxide | Vitrified Clay | 1 1/2" | 36 (Rough) Blue-Gray | 5 | 00000000 | 00000 |
| 1 | 3/4" | 1 1/2" | 24,000 | W207 | Aluminum Oxide | Vitrified Clay | 1 1/2" | 36 (Rough) Blue-Gray | 5 | 00000000 | 00000 |
| 1 | 3/4" | 2" | 18,750 | W208 | Aluminum Oxide | Vitrified Clay | 1 1/2" | 36 (Rough) Blue-Gray | 5 | 00000000 | 00000 |
| 1 | 1" | 3/4" | 35,100 | W219 | Aluminum Oxide | Vitrified Clay | 1 1/2" | 36 (Rough) Blue-Gray | 5 | 00000000 | 0000 |
| 1 | 1" | 1" | 25,500 | W220 | Aluminum Oxide | Vitrified Clay | 1 1/2" | 36 (Rough) Blue-Gray | 5 | 00000000 | 00000 |
| 1 | 1" | 1" | 34,500 | A38 | Aluminum Oxide | Vitrified Clay | 1 1/2" | 36 (Rough) Blue-Gray | 5 | 00000000 | 00000 |
| 1 | 1" | 1 1/2" | 19,120 | W221 | Aluminum Oxide | Vitrified Clay | 1 1/2" | 36 (Rough) Blue-Gray | 5 | 00000000 | 00000 |
| 1 | 1" | 2" | 15,900 | W222 | Aluminum Oxide | Vitrified Clay | 1 1/2" | 36 (Rough) Blue-Gray | 5 | 00000000 | 00000 |
| 1 | 1 1/4" | 1 1/4" | 20,400 | W230 | Aluminum Oxide | Vitrified Clay | 1 1/2" | 36 (Rough) Blue-Gray | 5 | 00000000 | 00000 |
| 1 | 1 1/4" | 2" | 14,250 | W232 | Aluminum Oxide | Vitrified Clay | 1 1/2" | 36 (Rough) Blue-Gray | 5 | 00000000 | 00000 |
| 1 | 1 1/2" | 1" | 22,500 | W237 | Aluminum Oxide | Vitrified Clay | 1 1/2" | 36 (Rough) Blue-Gray | 5 | 00000000 | 00000 |
| 1 | 1 1/2" | 1 1/2" | 15,600 | W238 | Aluminum Oxide | Vitrified Clay | 1 1/2" | 36 (Rough) Blue-Gray | 5 | 00000000 | 00000 |
| 1 | 2" | 1" | 19,100 | W242 | Aluminum Oxide | Vitrified Clay | 1 1/2" | 36 (Rough) Blue-Gray | 5 | 00000000 | 00000 |
| 2 | 1" | 1/2" | 38,200 | W218 | Aluminum Oxide | Vitrified Clay | 1 1/2" | 36 (Rough) Blue-Gray | 5 | 00000000 | 0000 |
| 2 | 1 1/4" | 1/2" | 30,560 | W227 | Aluminum Oxide | Vitrified Clay | 1 1/2" | 36 (Rough) Blue-Gray | 5 | 00000000 | 00000 |
| 2 | 1 1/2" | 1/4" | 25,470 | W235 | Aluminum Oxide | Vitrified Clay | 1 1/2" | 36 (Rough) Blue-Gray | 5 | 00000000 | 00000 |
| 2 | 1 1/2" | 1/2" | 25,470 | W236 | Aluminum Oxide | Vitrified Clay | 1 1/2" | 36 (Rough) Blue-Gray | 5 | 00000000 | 00000 |
Head | Abrasive | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Dia. | Lg. | Max. Speed, rpm | Shape No. | Material | Bond Material | Shank Lg. | Grit (Surface Texture) | Pkg. Qty. | Pkg. | ||
1/4" Shank Dia. | |||||||||||
For Steel, Stainless Steel, Iron | |||||||||||
| 3 | 3/4" | 5/8" | 50,930 | A22 | Aluminum Oxide | Vitrified Clay | 1 1/2" | 36 (Rough) Blue-Gray | 5 | 00000000 | 000000 |
| 3 | 1" | 1" | 34,500 | A21 | Aluminum Oxide | Vitrified Clay | 1 1/2" | 36 (Rough) Blue-Gray | 5 | 00000000 | 00000 |
| 4 | 7/8" | 2" | 19,860 | A11 | Aluminum Oxide | Vitrified Clay | 1 1/2" | 36 (Rough) Blue-Gray | 5 | 00000000 | 00000 |
| 4 | 1" | 2 3/4" | 16,100 | A3 | Aluminum Oxide | Vitrified Clay | 1 1/2" | 36 (Rough) Blue-Gray | 5 | 00000000 | 00000 |
| 5 | 1/4" | 3/4" | 76,500 | A24 | Aluminum Oxide | Vitrified Clay | 1 1/2" | 36 (Rough) Blue-Gray | 5 | 00000000 | 00000 |
Head | Abrasive | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Dia. | Lg. | Max. Speed, rpm | Shape No. | Material | Bond Material | Shank Lg. | Grit (Surface Texture) | Pkg. Qty. | Pkg. | ||
1/4" Shank Dia. | |||||||||||
For Steel, Stainless Steel, Iron | |||||||||||
| 8 | 1 1/4" | 1/4" | 30,560 | A37 | Aluminum Oxide | Vitrified Clay | 1 1/2" | 36 (Rough) Blue-Gray | 5 | 00000000 | 000000 |
| 8 | 1 3/4" | 3/8" | 23,520 | A36 | Aluminum Oxide | Vitrified Clay | 1 1/2" | 36 (Rough) Blue-Gray | 5 | 00000000 | 00000 |
| 9 | 1 1/2" | 3/8" | 25,470 | A43SS | Aluminum Oxide | Vitrified Clay | 1 1/2" | 36 (Rough) Blue-Gray | 5 | 00000000 | 00000 |
Head | Abrasive | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Dia. | Lg. | Max. Speed, rpm | Shape No. | Material | Bond Material | Shank Lg. | Grit (Surface Texture) | Pkg. Qty. | Pkg. | ||
1/4" Shank Dia. | |||||||||||
For Steel, Stainless Steel, Iron | |||||||||||
| 12 | 1 1/8" | 1 1/8" | 33,950 | A13 | Aluminum Oxide | Vitrified Clay | 1 1/2" | 36 (Rough) Blue-Gray | 5 | 00000000 | 000000 |
| 13 | 11/16" | 1 1/4" | 48,000 | A12 | Aluminum Oxide | Vitrified Clay | 1 1/2" | 36 (Rough) Blue-Gray | 5 | 00000000 | 00000 |
| 14 | 3/4" | 1 1/8" | 45,000 | A5 | Aluminum Oxide | Vitrified Clay | 1 1/2" | 36 (Rough) Blue-Gray | 5 | 00000000 | 00000 |
| 14 | 1 1/4" | 1 1/4" | 30,560 | A4 | Aluminum Oxide | Vitrified Clay | 1 1/2" | 36 (Rough) Blue-Gray | 5 | 00000000 | 00000 |
Head | Abrasive | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Dia. | Lg. | Max. Speed, rpm | Shape No. | Material | Bond Material | Shank Lg. | Grit (Surface Texture) | Pkg. Qty. | Pkg. | ||
1/4" Shank Dia. | |||||||||||
For Steel, Stainless Steel, Iron | |||||||||||
| 19 | 3/4" | 2 1/2" | 19,800 | A1 | Aluminum Oxide | Vitrified Clay | 1 1/2" | 36 (Rough) Blue-Gray | 5 | 00000000 | 000000 |
| 19 | 13/16" | 1 3/4" | 18,750 | A1SS | Aluminum Oxide | Vitrified Clay | 1 1/2" | 36 (Rough) Blue-Gray | 5 | 00000000 | 00000 |
| 19 | 1" | 2 1/2" | 16,100 | A1SS | Aluminum Oxide | Vitrified Clay | 1 1/2" | 36 (Rough) Blue-Gray | 5 | 00000000 | 00000 |
| 20 | 1 1/2" | 3/8" | 25,470 | A34 | Aluminum Oxide | Vitrified Clay | 1 1/2" | 36 (Rough) Blue-Gray | 5 | 00000000 | 00000 |
| 22 | 1" | 1 1/4" | 38,200 | A2 | Aluminum Oxide | Vitrified Clay | 1 1/2" | 36 (Rough) Blue-Gray | 5 | 00000000 | 00000 |
Head | Abrasive | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Dia. | Lg. | Max. Speed, rpm | Shape No. | Material | Bond Material | Shank Lg. | Grit (Surface Texture) | Pkg. Qty. | Pkg. | ||
1/4" Shank Dia. | |||||||||||
For Steel, Stainless Steel, Iron | |||||||||||
| 24 | 1" | 1" | 25,500 | A41SS | Aluminum Oxide | Vitrified Clay | 1 1/2" | 36 (Rough) Blue-Gray | 5 | 00000000 | 000000 |
| 25 | 1" | 5/8" | 38,200 | A32 | Aluminum Oxide | Vitrified Clay | 1 1/2" | 36 (Rough) Blue-Gray | 5 | 00000000 | 00000 |
| 25 | 1 3/8" | 1" | 27,780 | A31 | Aluminum Oxide | Vitrified Clay | 1 1/2" | 36 (Rough) Blue-Gray | 5 | 00000000 | 00000 |
Head | Abrasive | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Dia. | Lg. | Max. Speed, rpm | Shape No. | Material | Bond Material | Shank Lg. | Grit (Surface Texture) | Pkg. Qty. | Pkg. | ||
1/4" Shank Dia. | |||||||||||
For Steel, Stainless Steel, Iron | |||||||||||
| 27 | 5/8" | 5/8" | 61,120 | A26 | Aluminum Oxide | Vitrified Clay | 1 1/2" | 36 (Rough) Blue-Gray | 5 | 00000000 | 000000 |
| 27 | 1" | 1" | 35,620 | A25 | Aluminum Oxide | Vitrified Clay | 1 1/2" | 36 (Rough) Blue-Gray | 5 | 00000000 | 00000 |
Grinding Bits for Stainless Steel
Bits are specially formulated to stay cool during grinding, so they won’t mar or discolor stainless steel. They are also known as mounted points and die grinder bits. Head diameter is measured at the widest point.
Zirconia alumina bits grind faster and last longer than aluminum oxide bits.
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.
For technical drawings and 3-D models, click on a part number.
Head | Abrasive | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Dia. | Lg. | Max. Speed, rpm | Shape No. | Shape | Material | Bond Material | Shank Lg. | Grit (Surface Texture) | Each | ||
For Stainless Steel | |||||||||||
1/4" Shank Dia. | |||||||||||
| 1 | 3/8" | 1 1/4" | 46,750 | W179 | Cylindrical | Zirconia Alumina | Synthetic Resin | 1 1/2" | 36 (Rough) Gray | 00000000 | 00000 |
Grinding Bit Sets for Metals
Each set contains a selection of grinding bits. All include bits made of aluminum oxide, which is the most common abrasive used for grinding metal. These bits are also known as mounted points and die grinder bits.
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.
Abrasive | ||||||||
|---|---|---|---|---|---|---|---|---|
| No. of Pieces | Includes | Material | Bond Material | Shank Lg. | Color | Grit (Surface Texture) | Each | |
For Steel, Iron | ||||||||
1/8" Shank Dia. | ||||||||
| 50 | Foam Block Stand; Two each: B97, Six Each: B44, W144, W145, W154, W163, W170, W176, W185 | Aluminum Oxide | Vitrified Clay | 1 1/2" | Red | 36 (Rough) | 00000000 | 0000000 |
1/4" Shank Dia. | ||||||||
| 50 | Foam Block Stand; Five each: A2, A5, A12, A37, A38, W185, W186, W187, W205, W219 | Aluminum Oxide | Vitrified Clay | 1 1/2" | Red | 36 (Rough) | 00000000 | 000000 |
High-Performance Grinding Bits for Metals
Made of ceramic alumina, these bits prevent material and heat buildup better than bits made of boron nitride and aluminum oxide when used on steel, stainless steel, iron, and titanium. They also last longer than boron nitride bits, so they’re the best choice for high-volume applications. 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.
For technical drawings and 3-D models, click on a part number.
Head | Abrasive | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Dia. | Lg. | Max. Speed, rpm | Shape No. | Shape | Material | Bond Material | Shank Lg. | Grit (Surface Texture) | Each | ||
For Iron, Stainless Steel, Steel, Titanium | |||||||||||
1/4" Shank Dia. | |||||||||||
| 2 | 3/8" | 1 1/4" | 37,210 | W179 | Cylindrical | Ceramic Alumina | Vitrified Clay | 1 1/2" | 36 (Rough) Red | 0000000 | 00000 |
| 2 | 1/2" | 2" | 26,830 | W189 | Cylindrical | Ceramic Alumina | Vitrified Clay | 1 1/2" | 36 (Rough) Red | 0000000 | 0000 |
| 10 | 1" | 1/2" | 37,890 | W218 | Cylindrical | Ceramic Alumina | Vitrified Clay | 1 1/2" | 36 (Rough) Red | 0000000 | 00000 |
| 12 | 1" | 2 3/4" | 15,530 | A3 | Cone | Ceramic Alumina | Vitrified Clay | 1 1/2" | 36 (Rough) Red | 0000000 | 00000 |
Grinding Bits for Nonmetals
Almost as hard as diamond, these tungsten carbide bits cut through nonmetals without generating heat.
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.
For technical drawings and 3-D models, click on a part number.
Head | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Dia. | Lg. | Max. Speed, rpm | Shape | Abrasive Material | Shank Lg. | Grit (Surface Texture) | Each | ||
For Composites, Fiberglass, Plaster, Plastic, Rubber, Wood | |||||||||
1/8"Shank Dia. | |||||||||
| 1 | 5/32" | 13/16" | 20,000 | Cylindrical | Tungsten Carbide | 7/8" | 36 (Rough) Bronze | 0000000 | 000000 |
| 1 | 7/16" | 21/32" | 20,000 | Cylindrical | Tungsten Carbide | 7/8" | 36 (Rough) Bronze | 0000000 | 00000 |
| 2 | 9/32" | 21/32" | 20,000 | Barrel | Tungsten Carbide | 7/8" | 36 (Rough) Bronze | 0000000 | 00000 |
| 3 | 5/16" | 11/16" | 20,000 | Cone | Tungsten Carbide | 7/8" | 36 (Rough) Bronze | 0000000 | 00000 |
| 3 | 5/8" | 11/16" | 20,000 | Cone | Tungsten Carbide | 7/8" | 36 (Rough) Bronze | 0000000 | 00000 |
| 5 | 13/32" | 13/32" | 20,000 | Ball | Tungsten Carbide | 7/8" | 36 (Rough) Bronze | 0000000 | 00000 |
| 6 | 25/32" | 1/4" | 20,000 | Disc | Tungsten Carbide | 7/8" | 36 (Rough) Bronze | 0000000 | 00000 |
1/4"Shank Dia. | |||||||||
| 1 | 1/8" | 1 1/4" | 23,000 | Cylindrical | Tungsten Carbide | 1" | 36 (Rough) Bronze | 0000000 | 00000 |
| 1 | 1/4" | 1 1/2" | 23,000 | Cylindrical | Tungsten Carbide | 1" | 36 (Rough) Bronze | 0000000 | 00000 |
| 1 | 5/8" | 1" | 23,000 | Cylindrical | Tungsten Carbide | 1" | 36 (Rough) Bronze | 0000000 | 00000 |
| 5 | 3/4" | 3/4" | 23,000 | Ball | Tungsten Carbide | 1" | 36 (Rough) Bronze | 0000000 | 00000 |
| 7 | 1/8" | 1 1/2" | 23,000 | Taper | Tungsten Carbide | 1" | 36 (Rough) Bronze | 0000000 | 00000 |
| 8 | 3/4" | 1" | 23,000 | Cone | Tungsten Carbide | 1" | 36 (Rough) Bronze | 0000000 | 00000 |
Grinding Bit Sets for Nonmetals
Best for grinding composites, fiberglass, plaster, plastic, rubber, and wood without generating heat, these sets include a selection of our most popular tungsten carbide bits. The bits are also known as mounted points and die grinder bits.
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.
| No. of Pieces | Includes | Abrasive Material | Shank Lg. | Grit (Surface Texture) | Each | |
For Composites, Fiberglass, Plaster, Plastic, Rubber, Wood | ||||||
|---|---|---|---|---|---|---|
1/8" Shank Dia. | ||||||
| 7 | 1 1/4" Dia. Cutoff Wheel, Barrel Grinding Bit, Disc Grinding Bit, Two Cone Bits, Two Cylindrical Bits | Tungsten Carbide | 7/8" | 36 grit (Rough) Bronze | 0000000 | 0000000 |