McMaster-Carr logo
    Forward
    Enter e-mail addresses in the fields below
    Message
    Cancel
    Print
    How can we improve?
    Comments
    E-mail address (if you would like a response)
    115 Products

    Long-Life Grinding Bits for Nonmetals

    Image of Product. Front orientation. Grinding Bits. Long-Life Grinding Bits for Nonmetals, Style 1.
    Image of Product. Front orientation. Grinding Bits. Long-Life Grinding Bits for Nonmetals, Style 2.
    Image of Product. Front orientation. Grinding Bits. Long-Life Grinding Bits for Nonmetals, Style 3.
    Image of Product. Front orientation. Grinding Bits. Long-Life Grinding Bits for Nonmetals, Style 4.
    Image of Product. Front orientation. Grinding Bits. Long-Life Grinding Bits for Nonmetals, Style 5.
    Image of Product. Front orientation. Grinding Bits. Long-Life Grinding Bits for Nonmetals, Style 6.
    Image of Product. Front orientation. Grinding Bits. Long-Life Grinding Bits for Nonmetals, Style 7.
    Image of Product. Front orientation. Grinding Bits. Long-Life Grinding Bits for Nonmetals, Style 8.
    Image of Product. Front orientation. Grinding Bits. Long-Life Grinding Bits for Nonmetals, Style 9.

    Style

    1

    Style

    2

    Style

    3

    Style

    4

    Style

    5

    Style

    6

    Style

    7

    Style 8

    Style

    9

    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.
    Cylinder
    Image of Product. Front orientation. Grinding Bits. Long-Life Grinding Bits for Nonmetals, Style 1.

    Style

    1

    Image of Product. Front orientation. Grinding Bits. Long-Life Grinding Bits for Nonmetals, Style 3.

    Style

    3

    Head
    Style
    Dia.
    Lg.
    Max. Rotation
    Speed, rpm
    Abrasive
    Material
    Overall
    Lg.
    Grit (Surface Texture)
    Each
    For Carbide, Ceramics, and Glass
     
    1/8" Diameter Shank
    10.03"0.08"100,000Diamond2 1/4"220 (Extra Smooth) Silver0000000000000
    10.03"0.19"96,000Diamond2 1/4"120 (Smooth) Silver000000000000
    10.04"0.08"100,000Diamond2 1/4"220 (Extra Smooth) Silver000000000000
    10.04"0.19"96,000Diamond2 1/4"120 (Smooth) Silver000000000000
    10.05"0.08"100,000Diamond2 1/4"120 (Smooth) Silver000000000000
    10.05"0.19"96,000Diamond2 1/4"120 (Smooth) Silver000000000000
    10.06"0.12"100,000Diamond2 1/4"120 (Smooth) Silver000000000000
    10.06"1/4"96,000Diamond2 1/4"120 (Smooth) Silver000000000000
    10.07"0.12"100,000Diamond2 1/4"120 (Smooth) Silver000000000000
    10.08"0.16"100,000Diamond2 1/4"120 (Smooth) Silver000000000000
    10.08"1/4"96,000Diamond2 1/4"120 (Smooth) Silver000000000000
    10.09"0.16"100,000Diamond2 1/4"120 (Smooth) Silver000000000000
    10.1"0.16"100,000Diamond2 1/4"120 (Smooth) Silver000000000000
    10.11"0.16"60,000Diamond2 1/4"120 (Smooth) Silver000000000000
    10.12"0.16"60,000Diamond2 1/4"120 (Smooth) Silver000000000000
    10.13"0.2"60,000Diamond2 1/4"120 (Smooth) Silver000000000000
    10.13"1/4"96,000Diamond2 1/4"120 (Smooth) Silver000000000000
    10.14"0.2"60,000Diamond2 1/4"120 (Smooth) Silver000000000000
    10.16"0.2"60,000Diamond2 1/4"120 (Smooth) Silver000000000000
    10.16"1/4"96,000Diamond2 1/4"120 (Smooth) Silver000000000000
    10.19"0.31"96,000Diamond2 1/4"120 (Smooth) Silver000000000000
    11/4"0.03"46,000Diamond2 1/4"120 (Smooth) Silver000000000000
    11/4"0.06"46,000Diamond2 1/4"120 (Smooth) Silver000000000000
    11/4"0.13"46,000Diamond2 1/4"120 (Smooth) Silver000000000000
    11/4"1/4"100,000Diamond2"150 (Smooth) Silver0000000000000
    11/4"0.31"46,500Diamond2 1/4"120 (Smooth) Silver000000000000
    11/4"1/2"100,000Diamond2"150 (Smooth) Silver0000000000000
    10.31"0.31"46,500Diamond2 1/4"120 (Smooth) Silver000000000000
    13/8"1/8"40,000Diamond2 1/4"120 (Smooth) Silver0000000000000
    13/8"1/4"90,000Diamond2"150 (Smooth) Silver0000000000000
    13/8"3/8"90,000Diamond2"150 (Smooth) Silver0000000000000
    30.14"0.31"96,000Diamond2 1/4"120 (Smooth) Silver000000000000
     
    1/4" Diameter Shank
    10.06"1/4"96,000Diamond2 1/4"120 (Smooth) Silver000000000000
    10.09"1/4"96,000Diamond2 1/4"120 (Smooth) Silver000000000000
    10.13"1/4"96,000Diamond2 1/4"120 (Smooth) Silver000000000000
    10.19"0.31"96,000Diamond2 1/4"120 (Smooth) Silver000000000000
    10.2"0.24"60,000Diamond2 1/4"120 (Smooth) Silver000000000000
    10.24"0.28"60,000Diamond2 1/4"120 (Smooth) Silver000000000000
    11/4"0.31"46,500Diamond2 1/4"120 (Smooth) Silver000000000000
    10.26"0.28"60,000Diamond2 1/4"120 (Smooth) Silver000000000000
    10.31"0.31"46,000Diamond2 1/4"120 (Smooth) Silver000000000000
    10.32"0.32"30,000Diamond2 1/4"120 (Smooth) Silver000000000000
    10.34"0.32"30,000Diamond2 1/4"120 (Smooth) Silver000000000000
    10.38"0.31"46,500Diamond2 1/4"120 (Smooth) Silver000000000000
    10.39"0.39"30,000Diamond2 1/4"120 (Smooth) Silver000000000000
    11/2"1/4"70,000Diamond2"150 (Smooth) Silver0000000000000
    11/2"0.31"30,000Diamond2 1/4"120 (Smooth) Silver000000000000
    11/2"1/2"70,000Diamond2"150 (Smooth) Silver0000000000000
    10.59"0.39"20,000Diamond2 1/4"120 (Smooth) Silver000000000000
    10.73"0.39"20,000Diamond2 1/4"120 (Smooth) Silver000000000000
     
    Barrel
    Image of Product. Front orientation. Grinding Bits. Long-Life Grinding Bits for Nonmetals, Style 2.
    Image of Product. Front orientation. Grinding Bits. Long-Life Grinding Bits for Nonmetals, Style 4.
    Image of Product. Front orientation. Grinding Bits. Long-Life Grinding Bits for Nonmetals, Style 9.

    Style

    2

    Style

    4

    Style

    9

    Head
    Style
    Dia.
    Lg.
    Max. Rotation
    Speed, rpm
    Abrasive
    Material
    Overall
    Lg.
    Grit (Surface
    Texture)
    Each
    For Grout, Carbide, Ceramics, and Glass
     
    1/8" Diameter Shank
    43/32"5/16"40,000Diamond2 1/2"120 (Smooth) Silver00000000000000
     
    1/4" Diameter Shank
    93/32"5/16"40,000Diamond2 1/2"120 (Smooth) Silver0000000000000
    93/16"5/16"40,000Diamond2 1/2"120 (Smooth) Silver0000000000000
     
    For Carbide, Ceramics, and Glass
     
    1/8" Diameter Shank
    20.06"1/4"96,000Diamond2 1/4"120 (Smooth) Silver000000000000
    20.13"1/4"96,000Diamond2 1/4"120 (Smooth) Silver000000000000
    21/4"0.31"46,000Diamond2 1/4"120 (Smooth) Silver000000000000
    20.31"0.31"46,000Diamond2 1/4"120 (Smooth) Silver000000000000
    40.06"0.31"96,000Diamond2 1/4"120 (Smooth) Silver000000000000
    40.08"0.31"96,000Diamond2 1/4"120 (Smooth) Silver000000000000
    40.11"0.31"96,000Diamond2 1/4"120 (Smooth) Silver000000000000
     
    1/4" Diameter Shank
    20.38"0.31"46,000Diamond2 1/4"120 (Smooth) Silver000000000000
    21/2"0.31"30,000Diamond2 1/4"120 (Smooth) Silver000000000000
     
    Flat-Top Cone
    Image of Product. Front orientation. Grinding Bits. Long-Life Grinding Bits for Nonmetals, Style 8.

    Style 8

    Head
    Style
    Dia.
    Lg.
    Max. Rotation
    Speed, rpm
    Abrasive
    Material
    Overall
    Lg.
    Grit (Surface
    Texture)
    Each
    For Carbide, Ceramics, and Glass
     
    1/4" Diameter Shank
    80.19"0.1"18,600Diamond2"120 (Smooth) Silver0000000000000
    81/4"0.1"18,600Diamond2"120 (Smooth) Silver000000000000
    81/2"0.2"30,000Diamond2"120 (Smooth) Silver000000000000
     
    Taper
    Image of Product. Front orientation. Grinding Bits. Long-Life Grinding Bits for Nonmetals, Style 5.

    Style

    5

    Head
    Style
    Dia.
    Lg.
    Max. Rotation
    Speed, rpm
    Abrasive
    Material
    Overall
    Lg.
    Grit (Surface
    Texture)
    Each
    For Carbide, Ceramics, and Glass
     
    1/8" Diameter Shank
    55/32"5/8"40,000Diamond2 1/4"120 (Smooth) Silver00000000000000
    50.16"0.23"96,000Diamond2 1/4"120 (Smooth) Silver000000000000
    50.17"0.14"96,000Diamond2 1/4"120 (Smooth) Silver000000000000
    50.19"0.38"96,000Diamond2 1/4"120 (Smooth) Silver000000000000
     
    Ball
    Image of Product. Front orientation. Grinding Bits. Long-Life Grinding Bits for Nonmetals, Style 6.
    Image of Product. Front orientation. Grinding Bits. Long-Life Grinding Bits for Nonmetals, Style 7.

    Style

    6

    Style

    7

    Head
    Style
    Dia.
    Lg.
    Max. Rotation
    Speed, rpm
    Abrasive
    Material
    Overall
    Lg.
    Grit (Surface
    Texture)
    Each
    For Carbide, Ceramics, and Glass
     
    1/8" Diameter Shank
    60.06"0.06"96,000Diamond2 1/4"120 (Smooth) Silver0000000000000
    60.09"0.09"96,000Diamond2 1/4"120 (Smooth) Silver000000000000
    60.13"0.13"96,000Diamond2 1/4"120 (Smooth) Silver000000000000
    60.19"0.19"96,000Diamond2 1/4"120 (Smooth) Silver000000000000
    61/4"1/4"46,000Diamond2 1/4"120 (Smooth) Silver000000000000
    60.38"0.38"46,000Diamond2 1/4"120 (Smooth) Silver000000000000
    71/32"1/32"40,000Diamond2 1/4"120 (Smooth) Silver0000000000000
     
    1/4" Diameter Shank
    61/2"1/2"30,000Diamond2 1/4"120 (Smooth) Silver000000000000
     

    Long-Life Grinding Bits for Metals

    Image of Product. Front orientation. Grinding Bits. 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.
    Cylinder
    Head
    Dia.
    Lg.
    Max. Rotation
    Speed, rpm
    Abrasive
    Material
    Overall
    Lg.
    Grit (Surface Texture)
    Each
    For Steel, Stainless Steel, and Iron
     
    1/8" Diameter Shank
    0.03"0.08"100,000Boron Nitride2 1/4"220 (Extra Smooth) Silver0000000000000
    0.04"0.08"100,000Boron Nitride2 1/4"220 (Extra Smooth) Silver000000000000
    0.05"0.08"100,000Boron Nitride2 1/4"120 (Smooth) Silver000000000000
    0.06"0.12"100,000Boron Nitride2 1/4"120 (Smooth) Silver000000000000
    0.07"0.12"100,000Boron Nitride2 1/4"120 (Smooth) Silver000000000000
    0.08"0.16"100,000Boron Nitride2 1/4"120 (Smooth) Silver000000000000
    0.09"0.16"100,000Boron Nitride2 1/4"120 (Smooth) Silver000000000000
    0.1"0.16"100,000Boron Nitride2 1/4"120 (Smooth) Silver000000000000
    0.11"0.16"60,000Boron Nitride2 1/4"120 (Smooth) Silver000000000000
    0.12"0.16"60,000Boron Nitride2 1/4"120 (Smooth) Silver000000000000
    0.13"0.2"60,000Boron Nitride2 1/4"120 (Smooth) Silver000000000000
    0.14"0.2"60,000Boron Nitride2 1/4"120 (Smooth) Silver000000000000
    0.16"0.2"60,000Boron Nitride2 1/4"120 (Smooth) Silver000000000000
    1/4"1/4"50,000Boron Nitride2"150 (Smooth) Green0000000000000
    1/4"1/2"50,000Boron Nitride2"150 (Smooth) Green0000000000000
    3/8"1/4"50,000Boron Nitride2"150 (Smooth) Green0000000000000
     
    1/4" Diameter Shank
    0.2"0.24"60,000Boron Nitride2 1/4"120 (Smooth) Silver000000000000
    0.24"0.28"60,000Boron Nitride2 1/4"120 (Smooth) Silver000000000000
    0.26"0.28"60,000Boron Nitride2 1/4"120 (Smooth) Silver000000000000
    0.32"0.32"30,000Boron Nitride2 1/4"120 (Smooth) Silver000000000000
    0.34"0.32"30,000Boron Nitride2 1/4"120 (Smooth) Silver000000000000
    0.39"0.39"30,000Boron Nitride2 1/4"120 (Smooth) Silver000000000000
    0.47"0.39"30,000Boron Nitride2 1/4"120 (Smooth) Silver00000000000
    0.59"0.39"20,000Boron Nitride2 1/4"120 (Smooth) Silver000000000000
    0.73"0.39"20,000Boron Nitride2 1/4"120 (Smooth) Silver000000000000
     

    Miniature Long-Life Grinding Bits for Nonmetals

    Image of Product. Front orientation. Grinding Bits. Miniature Long-Life Grinding Bits for Nonmetals, Style 1.
    Image of Product. Front orientation. Grinding Bits. Miniature Long-Life Grinding Bits for Nonmetals, Style 2.
    Image of Product. Front orientation. Grinding Bits. Miniature Long-Life Grinding Bits for Nonmetals, Style 3.
    Image of Product. Front orientation. Grinding Bits. Miniature Long-Life Grinding Bits for Nonmetals, Style 4.
    Image of Product. Front orientation. Grinding Bits. Miniature Long-Life Grinding Bits for Nonmetals, Style 5.

    Style

    1

    Style

    2

    Style

    3

    Style

    4

    Style

    5

    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.
    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.
    Cylinder
    Image of Product. Front orientation. Grinding Bits. Miniature Long-Life Grinding Bits for Nonmetals, Style 3.

    Style

    3

    Head
    Style
    Dia.
    Lg.
    Max. Rotation
    Speed, rpm
    Abrasive
    Material
    Shank
    Lg.
    Grit (Surface
    Texture)
    Each
    For Carbide, Ceramics, Composites, Fiberglass, Glass, Plastic, and Rubber
     
    3/32" Diameter Shank
    30.094"0.157"25,000Diamond1 5/8"100 (Smooth) Silver0000000000000
    30.181"0.157"25,000Diamond1 5/8"100 (Smooth) Silver000000000000
     
    Rotary Tool Chucks
    Image of Product. Front orientation. Rotary Tool Chucks.
    A rotary tool chuck connects these bits to rotary tools that accept a 1/8" shank diameter. Swap out accessories on your Dremel without tools.
    For Shank
    Dia.
    Mfr. Model
    No.
    For Mfr. Model No.
    Mounting Hole
    Thread Size
    Body
    Material
    Jaw
    Material
    Each
    1/32" to 1/8"4486100, 200, 212, 225, 275, 285, 300, 395, 398, 400, 575, 750, 770, 780, 800, 3000, 4000, 7700, 8050, 8200, 82201/4"-40
    		SteelSteel0000000000000
    Inverted Cone
    Image of Product. Front orientation. Grinding Bits. Miniature Long-Life Grinding Bits for Nonmetals, Style 1.

    Style

    1

    Head
    Style
    Dia.
    Lg.
    Max. Rotation
    Speed, rpm
    Abrasive
    Material
    Shank
    Lg.
    Grit (Surface
    Texture)
    Each
    For Carbide, Ceramics, Composites, Fiberglass, Glass, Plastic, and Rubber
     
    3/32" Diameter Shank
    10.047"0.059"75,000Diamond1 3/4"120 (Smooth) Silver0000000000000
    10.071"0.059"55,000Diamond1 3/4"120 (Smooth) Silver000000000000
    10.374"0.16"25,000Diamond1 5/8"100 (Smooth) Silver000000000000
     
    Rotary Tool Chucks
    Image of Product. Front orientation. Rotary Tool Chucks.
    A rotary tool chuck connects these bits to rotary tools that accept a 1/8" shank diameter. Swap out accessories on your Dremel without tools.
    For Shank
    Dia.
    Mfr. Model
    No.
    For Mfr. Model No.
    Mounting Hole
    Thread Size
    Body
    Material
    Jaw
    Material
    Each
    1/32" to 1/8"4486100, 200, 212, 225, 275, 285, 300, 395, 398, 400, 575, 750, 770, 780, 800, 3000, 4000, 7700, 8050, 8200, 82201/4"-40
    		SteelSteel0000000000000
    Taper
    Image of Product. Front orientation. Grinding Bits. Miniature Long-Life Grinding Bits for Nonmetals, Style 4.
    Image of Product. Front orientation. Grinding Bits. Miniature Long-Life Grinding Bits for Nonmetals, Style 5.

    Style

    4

    Style

    5

    Head
    Style
    Dia.
    Lg.
    Max. Rotation
    Speed, rpm
    Abrasive
    Material
    Shank
    Lg.
    Grit (Surface
    Texture)
    Each
    For Carbide, Ceramics, Composites, Fiberglass, Glass, Plastic, and Rubber
     
    3/32" Diameter Shank
    40.098"0.393"25,000Diamond1 3/8"100 (Smooth) Silver0000000000000
    50.123"0.354"25,000Diamond1 3/8"100 (Smooth) Silver000000000000
     
    Rotary Tool Chucks
    Image of Product. Front orientation. Rotary Tool Chucks.
    A rotary tool chuck connects these bits to rotary tools that accept a 1/8" shank diameter. Swap out accessories on your Dremel without tools.
    For Shank
    Dia.
    Mfr. Model
    No.
    For Mfr. Model No.
    Mounting Hole
    Thread Size
    Body
    Material
    Jaw
    Material
    Each
    1/32" to 1/8"4486100, 200, 212, 225, 275, 285, 300, 395, 398, 400, 575, 750, 770, 780, 800, 3000, 4000, 7700, 8050, 8200, 82201/4"-40
    		SteelSteel0000000000000
    Ball
    Image of Product. Front orientation. Grinding Bits. Miniature Long-Life Grinding Bits for Nonmetals, Style 2.

    Style

    2

    Head
    Style
    Dia.
    Lg.
    Max. Rotation
    Speed, rpm
    Abrasive
    Material
    Shank
    Lg.
    Grit (Surface
    Texture)
    Each
    For Carbide, Ceramics, Composites, Fiberglass, Glass, Plastic, and Rubber
     
    3/32" Diameter Shank
    20.051"0.051"70,000Diamond1 3/4"100 (Smooth) Silver0000000000000
    20.075"0.075"45,000Diamond1 5/8"100 (Smooth) Silver000000000000
    20.091"0.091"40,000Diamond1 5/8"100 (Smooth) Silver000000000000
    20.138"0.138"25,000Diamond1 5/8"100 (Smooth) Silver000000000000
    20.169"0.169"25,000Diamond1 5/8"100 (Smooth) Silver000000000000
     
    Rotary Tool Chucks
    Image of Product. Front orientation. Rotary Tool Chucks.
    A rotary tool chuck connects these bits to rotary tools that accept a 1/8" shank diameter. Swap out accessories on your Dremel without tools.
    For Shank
    Dia.
    Mfr. Model
    No.
    For Mfr. Model No.
    Mounting Hole
    Thread Size
    Body
    Material
    Jaw
    Material
    Each
    1/32" to 1/8"4486100, 200, 212, 225, 275, 285, 300, 395, 398, 400, 575, 750, 770, 780, 800, 3000, 4000, 7700, 8050, 8200, 82201/4"-40
    		SteelSteel0000000000000
    back to top