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DFARS Specialty Metals
Long-Life Grinding Bits for Nonmetals
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The diamond abrasive in these bits is extremely hard and lasts longer than tungsten carbide. For longer tool life and improved finish, use a water- or oil-soluble mist or coolant.
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 | O'all Lg. | Grit (Surface Texture) | Each | ||
For Carbide, Ceramics, Glass | |||||||||
1/8" Shank Dia. | |||||||||
| 1 | 0.03" | 0.08" | 100,000 | Cylindrical | Diamond | 2 1/4" | 220 (Extra Smooth) Silver | 0000000 | 000000 |
| 1 | 0.03" | 0.19" | 96,000 | Cylindrical | Diamond | 2 1/4" | 120 (Smooth) Silver | 0000000 | 00000 |
| 1 | 0.04" | 0.08" | 100,000 | Cylindrical | Diamond | 2 1/4" | 220 (Extra Smooth) Silver | 0000000 | 00000 |
| 1 | 0.04" | 0.19" | 96,000 | Cylindrical | Diamond | 2 1/4" | 120 (Smooth) Silver | 0000000 | 00000 |
| 1 | 0.05" | 0.08" | 100,000 | Cylindrical | Diamond | 2 1/4" | 120 (Smooth) Silver | 0000000 | 00000 |
| 1 | 0.05" | 0.19" | 96,000 | Cylindrical | Diamond | 2 1/4" | 120 (Smooth) Silver | 0000000 | 00000 |
| 1 | 0.06" | 0.12" | 100,000 | Cylindrical | Diamond | 2 1/4" | 120 (Smooth) Silver | 0000000 | 00000 |
| 1 | 0.06" | 1/4" | 96,000 | Cylindrical | Diamond | 2 1/4" | 120 (Smooth) Silver | 0000000 | 00000 |
| 1 | 0.07" | 0.12" | 100,000 | Cylindrical | Diamond | 2 1/4" | 120 (Smooth) Silver | 0000000 | 00000 |
| 1 | 0.08" | 0.16" | 100,000 | Cylindrical | Diamond | 2 1/4" | 120 (Smooth) Silver | 0000000 | 00000 |
| 1 | 0.08" | 1/4" | 96,000 | Cylindrical | Diamond | 2 1/4" | 120 (Smooth) Silver | 0000000 | 00000 |
| 1 | 0.09" | 0.16" | 100,000 | Cylindrical | Diamond | 2 1/4" | 120 (Smooth) Silver | 0000000 | 00000 |
| 1 | 0.1" | 0.16" | 100,000 | Cylindrical | Diamond | 2 1/4" | 120 (Smooth) Silver | 0000000 | 00000 |
| 1 | 0.11" | 0.16" | 60,000 | Cylindrical | Diamond | 2 1/4" | 120 (Smooth) Silver | 0000000 | 00000 |
| 1 | 0.12" | 0.16" | 60,000 | Cylindrical | Diamond | 2 1/4" | 120 (Smooth) Silver | 0000000 | 00000 |
| 1 | 0.13" | 0.2" | 60,000 | Cylindrical | Diamond | 2 1/4" | 120 (Smooth) Silver | 0000000 | 00000 |
| 1 | 0.13" | 1/4" | 96,000 | Cylindrical | Diamond | 2 1/4" | 120 (Smooth) Silver | 0000000 | 00000 |
| 1 | 0.14" | 0.2" | 60,000 | Cylindrical | Diamond | 2 1/4" | 120 (Smooth) Silver | 0000000 | 00000 |
| 1 | 0.16" | 0.2" | 60,000 | Cylindrical | Diamond | 2 1/4" | 120 (Smooth) Silver | 0000000 | 00000 |
| 1 | 0.16" | 1/4" | 96,000 | Cylindrical | Diamond | 2 1/4" | 120 (Smooth) Silver | 0000000 | 00000 |
| 1 | 0.19" | 0.31" | 96,000 | Cylindrical | Diamond | 2 1/4" | 120 (Smooth) Silver | 0000000 | 00000 |
| 1 | 0.25" | 0.03" | 46,000 | Cylindrical | Diamond | 2 1/4" | 120 (Smooth) Silver | 0000000 | 00000 |
| 1 | 0.25" | 0.06" | 46,000 | Cylindrical | Diamond | 2 1/4" | 120 (Smooth) Silver | 0000000 | 00000 |
| 1 | 0.25" | 0.13" | 46,000 | Cylindrical | Diamond | 2 1/4" | 120 (Smooth) Silver | 0000000 | 00000 |
| 1 | 0.25" | 1/4" | 100,000 | Cylindrical | Diamond | 2" | 150 (Smooth) Silver | 00000000 | 00000 |
| 1 | 0.25" | 0.31" | 46,500 | Cylindrical | Diamond | 2 1/4" | 120 (Smooth) Silver | 0000000 | 00000 |
| 1 | 0.25" | 1/2" | 100,000 | Cylindrical | Diamond | 2" | 150 (Smooth) Silver | 00000000 | 00000 |
| 1 | 0.31" | 0.31" | 46,500 | Cylindrical | Diamond | 2 1/4" | 120 (Smooth) Silver | 0000000 | 00000 |
| 1 | 0.375" | 1/8" | 40,000 | Cylindrical | Diamond | 2 1/4" | 120 (Smooth) Silver | 00000000 | 00000 |
| 1 | 0.375" | 1/4" | 90,000 | Cylindrical | Diamond | 2" | 150 (Smooth) Silver | 00000000 | 00000 |
| 1 | 0.375" | 3/8" | 90,000 | Cylindrical | Diamond | 2" | 150 (Smooth) Silver | 00000000 | 00000 |
| 2 | 0.06" | 1/4" | 96,000 | Barrel | Diamond | 2 1/4" | 120 (Smooth) Silver | 0000000 | 00000 |
| 2 | 0.13" | 1/4" | 96,000 | Barrel | Diamond | 2 1/4" | 120 (Smooth) Silver | 0000000 | 00000 |
| 2 | 0.25" | 0.31" | 46,000 | Barrel | Diamond | 2 1/4" | 120 (Smooth) Silver | 0000000 | 00000 |
| 2 | 0.31" | 0.31" | 46,000 | Barrel | Diamond | 2 1/4" | 120 (Smooth) Silver | 0000000 | 00000 |
| 3 | 0.14" | 0.31" | 96,000 | Cylindrical | Diamond | 2 1/4" | 120 (Smooth) Silver | 0000000 | 00000 |
| 4 | 0.06" | 0.31" | 96,000 | Barrel | Diamond | 2 1/4" | 120 (Smooth) Silver | 0000000 | 00000 |
| 4 | 0.08" | 0.31" | 96,000 | Barrel | Diamond | 2 1/4" | 120 (Smooth) Silver | 0000000 | 00000 |
| 4 | 0.11" | 0.31" | 96,000 | Barrel | Diamond | 2 1/4" | 120 (Smooth) Silver | 0000000 | 00000 |
| 5 | 0.156" | 5/8" | 40,000 | Taper | Diamond | 2 1/4" | 120 (Smooth) Silver | 00000000 | 00000 |
| 5 | 0.16" | 0.23" | 96,000 | Taper | Diamond | 2 1/4" | 120 (Smooth) Silver | 0000000 | 00000 |
| 5 | 0.17" | 0.14" | 96,000 | Taper | Diamond | 2 1/4" | 120 (Smooth) Silver | 0000000 | 00000 |
| 5 | 0.19" | 0.38" | 96,000 | Taper | Diamond | 2 1/4" | 120 (Smooth) Silver | 0000000 | 00000 |
| 6 | 0.06" | 0.06" | 96,000 | Ball | Diamond | 2 1/4" | 120 (Smooth) Silver | 0000000 | 00000 |
| 6 | 0.09" | 0.09" | 96,000 | Ball | Diamond | 2 1/4" | 120 (Smooth) Silver | 0000000 | 00000 |
| 6 | 0.13" | 0.13" | 96,000 | Ball | Diamond | 2 1/4" | 120 (Smooth) Silver | 0000000 | 00000 |
| 6 | 0.19" | 0.19" | 96,000 | Ball | Diamond | 2 1/4" | 120 (Smooth) Silver | 0000000 | 00000 |
| 6 | 0.25" | 1/4" | 46,000 | Ball | Diamond | 2 1/4" | 120 (Smooth) Silver | 0000000 | 00000 |
| 6 | 0.38" | 0.38" | 46,000 | Ball | Diamond | 2 1/4" | 120 (Smooth) Silver | 0000000 | 00000 |
| 7 | 0.031" | 1/32" | 40,000 | Ball | Diamond | 2 1/4" | 120 (Smooth) Silver | 00000000 | 00000 |
1/4" Shank Dia. | |||||||||
| 1 | 0.06" | 1/4" | 96,000 | Cylindrical | Diamond | 2 1/4" | 120 (Smooth) Silver | 0000000 | 00000 |
| 1 | 0.09" | 1/4" | 96,000 | Cylindrical | Diamond | 2 1/4" | 120 (Smooth) Silver | 0000000 | 00000 |
| 1 | 0.13" | 1/4" | 96,000 | Cylindrical | Diamond | 2 1/4" | 120 (Smooth) Silver | 0000000 | 00000 |
| 1 | 0.19" | 0.31" | 96,000 | Cylindrical | Diamond | 2 1/4" | 120 (Smooth) Silver | 0000000 | 00000 |
| 1 | 0.2" | 0.24" | 60,000 | Cylindrical | Diamond | 2 1/4" | 120 (Smooth) Silver | 0000000 | 00000 |
| 1 | 0.24" | 0.28" | 60,000 | Cylindrical | Diamond | 2 1/4" | 120 (Smooth) Silver | 0000000 | 00000 |
| 1 | 0.25" | 0.31" | 46,500 | Cylindrical | Diamond | 2 1/4" | 120 (Smooth) Silver | 0000000 | 00000 |
| 1 | 0.26" | 0.28" | 60,000 | Cylindrical | Diamond | 2 1/4" | 120 (Smooth) Silver | 0000000 | 00000 |
| 1 | 0.31" | 0.31" | 46,000 | Cylindrical | Diamond | 2 1/4" | 120 (Smooth) Silver | 0000000 | 00000 |
| 1 | 0.32" | 0.32" | 30,000 | Cylindrical | Diamond | 2 1/4" | 120 (Smooth) Silver | 0000000 | 00000 |
| 1 | 0.34" | 0.32" | 30,000 | Cylindrical | Diamond | 2 1/4" | 120 (Smooth) Silver | 0000000 | 00000 |
| 1 | 0.38" | 0.31" | 46,500 | Cylindrical | Diamond | 2 1/4" | 120 (Smooth) Silver | 0000000 | 00000 |
| 1 | 0.39" | 0.39" | 30,000 | Cylindrical | Diamond | 2 1/4" | 120 (Smooth) Silver | 0000000 | 00000 |
| 1 | 0.5" | 1/4" | 70,000 | Cylindrical | Diamond | 2" | 150 (Smooth) Silver | 00000000 | 00000 |
| 1 | 0.5" | 0.31" | 30,000 | Cylindrical | Diamond | 2 1/4" | 120 (Smooth) Silver | 0000000 | 00000 |
| 1 | 0.5" | 1/2" | 70,000 | Cylindrical | Diamond | 2" | 150 (Smooth) Silver | 00000000 | 00000 |
| 1 | 0.59" | 0.39" | 20,000 | Cylindrical | Diamond | 2 1/4" | 120 (Smooth) Silver | 0000000 | 00000 |
| 1 | 0.73" | 0.39" | 20,000 | Cylindrical | Diamond | 2 1/4" | 120 (Smooth) Silver | 0000000 | 00000 |
| 2 | 0.38" | 0.31" | 46,000 | Barrel | Diamond | 2 1/4" | 120 (Smooth) Silver | 0000000 | 00000 |
| 2 | 0.5" | 0.31" | 30,000 | Barrel | Diamond | 2 1/4" | 120 (Smooth) Silver | 0000000 | 00000 |
| 6 | 0.5" | 1/2" | 30,000 | Ball | Diamond | 2 1/4" | 120 (Smooth) Silver | 0000000 | 00000 |
| 8 | 0.19" | 0.1" | 18,600 | Flat-Top Cone | Diamond | 2" | 120 (Smooth) Silver | 0000000 | 00000 |
| 8 | 0.25" | 0.1" | 18,600 | Flat-Top Cone | Diamond | 2" | 120 (Smooth) Silver | 0000000 | 00000 |
| 8 | 0.5" | 0.2" | 30,000 | Flat-Top Cone | Diamond | 2" | 120 (Smooth) Silver | 0000000 | 00000 |
For Carbide, Ceramics, Glass, Grout | |||||||||
1/8" Shank Dia. | |||||||||
| 4 | 0.094" | 5/16" | 40,000 | Barrel | Diamond | 2 1/2" | 120 (Smooth) Silver | 00000000 | 00000 |
1/4" Shank Dia. | |||||||||
| 9 | 0.094" | 5/16" | 40,000 | Barrel | Diamond | 2 1/2" | 120 (Smooth) Silver | 00000000 | 00000 |
| 9 | 0.188" | 5/16" | 40,000 | Barrel | Diamond | 2 1/2" | 120 (Smooth) Silver | 00000000 | 00000 |
Miniature Long-Life Grinding Bits for Nonmetals
Made with diamond abrasive, these bits are extremely hard and last longer than tungsten carbide. They have a small shank and head for precise and intricate jobs. To extend the life of these bits and improve their finish, use a water- or oil-soluble mist or coolant. They are also known as mounted points and die grinder bits. Head diameter is measured at the widest point.
A keyless chuck (sold separately) connects these bits to rotary tools that accept a 1/8" shank diameter.
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.
Grinding Bits
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Head | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Dia. | Lg. | Max. Speed, rpm | Shape | Abrasive Material | Shank Lg. | Grit (Surface Texture) | Each | ||
For Carbide, Ceramics, Composites, Fiberglass, Glass, Plastic, Rubber | |||||||||
3/32" Shank Dia. | |||||||||
| 1 | 0.047" | 0.059" | 75,000 | Inverted Cone | Diamond | 1 3/4" | 120 (Smooth) Silver | 0000000 | 000000 |
| 1 | 0.071" | 0.059" | 55,000 | Inverted Cone | Diamond | 1 3/4" | 120 (Smooth) Silver | 0000000 | 00000 |
| 1 | 0.374" | 0.16" | 25,000 | Inverted Cone | Diamond | 1 5/8" | 100 (Smooth) Silver | 0000000 | 00000 |
| 2 | 0.051" | 0.051" | 70,000 | Ball | Diamond | 1 3/4" | 100 (Smooth) Silver | 0000000 | 00000 |
| 2 | 0.075" | 0.075" | 45,000 | Ball | Diamond | 1 5/8" | 100 (Smooth) Silver | 0000000 | 00000 |
| 2 | 0.091" | 0.091" | 40,000 | Ball | Diamond | 1 5/8" | 100 (Smooth) Silver | 0000000 | 00000 |
| 2 | 0.138" | 0.138" | 25,000 | Ball | Diamond | 1 5/8" | 100 (Smooth) Silver | 0000000 | 00000 |
| 2 | 0.169" | 0.169" | 25,000 | Ball | Diamond | 1 5/8" | 100 (Smooth) Silver | 0000000 | 00000 |
| 3 | 0.094" | 0.157" | 25,000 | Cylindrical | Diamond | 1 5/8" | 100 (Smooth) Silver | 0000000 | 00000 |
| 3 | 0.181" | 0.157" | 25,000 | Cylindrical | Diamond | 1 5/8" | 100 (Smooth) Silver | 0000000 | 00000 |
| 4 | 0.098" | 0.393" | 25,000 | Taper | Diamond | 1 3/8" | 100 (Smooth) Silver | 0000000 | 00000 |
| 5 | 0.123" | 0.354" | 25,000 | Taper | Diamond | 1 3/8" | 100 (Smooth) Silver | 0000000 | 00000 |
Keyless Chucks for Dremel
Swap out accessories on your Dremel without tools.
| For Shank Dia. | Manufacturer Model Number | For Manufacturer Model Number | Mounting Hole Thread Size  | Body Material | Jaw Material | Each | |
| 1/32"-1/8" | 4486 | 100, 200, 212, 225, 275, 285, 300, 395, 398, 400, 575, 750, 770, 780, 800, 3000, 4000, 7700, 8050, 8200, 8220 | 1/4"-40 | Steel | Steel | 0000000 | 00000 |
Long-Life Grinding Bits for Metals
Similar to diamond, boron nitride is harder than aluminum oxide and lasts longer. Bits are also known as jig grinding pins and mandrels.
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 | O'all Lg. | Grit (Surface Texture) | Each | |
For Steel, Stainless Steel, Iron | ||||||||
1/8" Shank Dia. | ||||||||
| 0.03" | 0.08" | 100,000 | Cylindrical | Boron Nitride | 2 1/4" | 220 (Extra Smooth) Silver | 0000000 | 000000 |
| 0.04" | 0.08" | 100,000 | Cylindrical | Boron Nitride | 2 1/4" | 220 (Extra Smooth) Silver | 0000000 | 00000 |
| 0.05" | 0.08" | 100,000 | Cylindrical | Boron Nitride | 2 1/4" | 120 (Smooth) Silver | 0000000 | 00000 |
| 0.06" | 0.12" | 100,000 | Cylindrical | Boron Nitride | 2 1/4" | 120 (Smooth) Silver | 0000000 | 00000 |
| 0.07" | 0.12" | 100,000 | Cylindrical | Boron Nitride | 2 1/4" | 120 (Smooth) Silver | 0000000 | 00000 |
| 0.08" | 0.16" | 100,000 | Cylindrical | Boron Nitride | 2 1/4" | 120 (Smooth) Silver | 0000000 | 00000 |
| 0.09" | 0.16" | 100,000 | Cylindrical | Boron Nitride | 2 1/4" | 120 (Smooth) Silver | 0000000 | 00000 |
| 0.1" | 0.16" | 100,000 | Cylindrical | Boron Nitride | 2 1/4" | 120 (Smooth) Silver | 0000000 | 00000 |
| 0.11" | 0.16" | 60,000 | Cylindrical | Boron Nitride | 2 1/4" | 120 (Smooth) Silver | 0000000 | 00000 |
| 0.12" | 0.16" | 60,000 | Cylindrical | Boron Nitride | 2 1/4" | 120 (Smooth) Silver | 0000000 | 00000 |
| 0.13" | 0.2" | 60,000 | Cylindrical | Boron Nitride | 2 1/4" | 120 (Smooth) Silver | 0000000 | 00000 |
| 0.14" | 0.2" | 60,000 | Cylindrical | Boron Nitride | 2 1/4" | 120 (Smooth) Silver | 0000000 | 00000 |
| 0.16" | 0.2" | 60,000 | Cylindrical | Boron Nitride | 2 1/4" | 120 (Smooth) Silver | 0000000 | 00000 |
| 1/4" | 1/4" | 50,000 | Cylindrical | Boron Nitride | 2" | 150 (Smooth) Green | 00000000 | 00000 |
| 1/4" | 1/2" | 50,000 | Cylindrical | Boron Nitride | 2" | 150 (Smooth) Green | 00000000 | 00000 |
| 3/8" | 1/4" | 50,000 | Cylindrical | Boron Nitride | 2" | 150 (Smooth) Green | 00000000 | 00000 |
1/4" Shank Dia. | ||||||||
| 0.2" | 0.24" | 60,000 | Cylindrical | Boron Nitride | 2 1/4" | 120 (Smooth) Silver | 0000000 | 00000 |
| 0.24" | 0.28" | 60,000 | Cylindrical | Boron Nitride | 2 1/4" | 120 (Smooth) Silver | 0000000 | 00000 |
| 0.26" | 0.28" | 60,000 | Cylindrical | Boron Nitride | 2 1/4" | 120 (Smooth) Silver | 0000000 | 00000 |
| 0.32" | 0.32" | 30,000 | Cylindrical | Boron Nitride | 2 1/4" | 120 (Smooth) Silver | 0000000 | 00000 |
| 0.34" | 0.32" | 30,000 | Cylindrical | Boron Nitride | 2 1/4" | 120 (Smooth) Silver | 0000000 | 00000 |
| 0.39" | 0.39" | 30,000 | Cylindrical | Boron Nitride | 2 1/4" | 120 (Smooth) Silver | 0000000 | 00000 |
| 0.47" | 0.39" | 30,000 | Cylindrical | Boron Nitride | 2 1/4" | 120 (Smooth) Silver | 000000 | 00000 |
| 0.59" | 0.39" | 20,000 | Cylindrical | Boron Nitride | 2 1/4" | 120 (Smooth) Silver | 0000000 | 00000 |
| 0.73" | 0.39" | 20,000 | Cylindrical | Boron Nitride | 2 1/4" | 120 (Smooth) Silver | 0000000 | 00000 |