McMaster-Carr logo
    Filter by
    System of Measurement
    Construction
    Shaft Type
    Shaft Mount Type
    Keyway Width
    Attribute Image
    Clamping Screw Material
    Number of Clamping Screws Included
    U.S.–Mexico–Canada Agreement (USMCA) Qualifying
    DFARS Specialty Metals
    Export Control Classification Number (ECCN)
    Industrial Info Snippet
    Bushing Trade Number
    Set Screw Material
    Number of Set Screws Included
    Clamping Screw Finish
    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)
    28 Products

    Two-Piece Shaft Collars

    Image of Product. Front orientation. Shaft Collars. Two Piece, For Round Shafts.

    For Round Shafts

    Image of Product. Front orientation. Shaft Collars. Two Piece, For Keyed Shafts.

    For Keyed Shafts

    Attach these collars anywhere along your shaft, which helps when other components are already installed or you can't access the end. They clamp firmly and evenly without marring the shaft, so you can reposition or remove collars later.
    Black-Oxide Carbon Steel—Dark and matted for a finished look, but with minimal corrosion resistance. Best for dry environments.
    Zinc-Plated Carbon Steel—A step up from plain carbon steel collars, these withstand occasional exposure to moisture.
    Chrome-Plated Carbon Steel—Resist moisture and mild cleaning solutions better than zinc-plated collars.
    303 Stainless Steel—Withstand moisture and mild cleaning solutions, such as acetone and ammonia. These are easier to machine than other stainless steel collars.
    316 Stainless Steel—More corrosion resistant than 303 stainless steel collars. These collars withstand salt water and harsh chemicals, such as bleach, chlorine, and phosphoric acid.
    Aluminum—One-third the weight of steel and corrosion resistant.
    For Round Shafts
    For Keyed Shafts
    Clamping
    Screw
    Keyway
    For Shaft
    Dia.
    OD
    Wd.
    Type
    No.
    Included
    Each
    Wd.
    Dp.
    Each
    Black-Oxide Carbon Steel
    2 7/16"3 1/2"3/4"Socket Head26436K810000005/8"9/32"3357K21000000
     
    Zinc-Plated Carbon Steel
    2 7/16"3 1/2"3/4"Socket Head22380K5200000—————0
     
    Chrome-Plated Carbon Steel
    2 7/16"3 1/2"3/4"Socket Head23370K93000005/8"9/32"3389N2400000
     
    303 Stainless Steel
    2 7/16"3 1/2"3/4"Socket Head26436K111000005/8"9/32"3329K21000000
     
    316 Stainless Steel
    2 7/16"3 1/2"3/4"Socket Head29633T45000000—————0
     
    Aluminum
    2 7/16"3 1/2"3/4"Socket Head26436K16300000—————0
     

    Set Screw Shaft Collars

    Image of Product. Front orientation. Shaft Collars. Set Screw Shaft Collars.
    Slide these traditional collars from one end of the shaft and tighten the set screw. They dig into the shaft for a secure hold, but one that leaves a gouge. For maximum holding power, make sure the set screw is harder than the shaft.
    Black-Oxide Carbon Steel—Dark and matted for a finished look, but with minimal corrosion resistance. Best for dry environments.
    Zinc-Plated Carbon Steel—A step up from plain carbon steel collars, these withstand occasional exposure to moisture.
    303 Stainless Steel—Withstand moisture and mild cleaning solutions, such as acetone and ammonia. These are easier to machine than other stainless steel collars.
    316 Stainless Steel—More corrosion resistant than 303 stainless steel collars. These collars withstand salt water and harsh chemicals, such as bleach, chlorine, and phosphoric acid.
    Aluminum—One-third the weight of steel and corrosion resistant.
    Set
    Screw
    For Shaft
    Dia.
    OD
    Wd.
    Type
    No.
    Included
    Each
    Black-Oxide Carbon Steel
    2 7/16"3 1/2"1"Hex Socket19414T44000000
     
    Zinc-Plated Carbon Steel
    2 7/16"3 1/2"1"Hex Socket16432K4600000
     
    303 Stainless Steel
    2 7/16"3 1/2"1"Hex Socket16462K46000000
     
    316 Stainless Steel
    2 7/16"3 1/2"1"Hex Socket19943K54000000
     
    Aluminum
    2 7/16"3 1/2"1"Hex Socket19946K5600000
     

    Hub-Mount Screw-Clamp Bushings

    Image of Product. Front orientation. Pulley and Sprocket Bushings. Hub-Mount Screw-Clamp Bushings.
    Image of Attribute. Side1 orientation. Hub-Mount Screw-Clamp Bushings.

    Transfer torque directly from a shaft to a hub. These bushings install over your hub to mount a sprocket, pulley, or gear to a shaft at the same time. Common in industrial gearbox applications, they can also connect a hollow shaft over a solid shaft. As screw-clamp bushings, they're good for shock loads. When you tighten the included clamping screws, the outer rings compress against a sprocket, pulley, or gear in between them, causing the inner rings to tighten around the shaft.
    For Shaft
    Dia.
    OD
    Overall
    Wd.
    Max. Torque,
    in·lbf
    Fastener Tightening
    Torque, in·lbf
    Each
    Zinc-Plated Steel
    2 7/16"4 5/16"1 5/16"20,6001007654N170000000
     

    Oversized Two-Piece Shaft Collars

    Image of Product. Front orientation. Shaft Collars. Oversized Two-Piece Shaft Collars, For Round Shafts.

    For Round Shafts

    Wider and thicker with larger clamping screws, these deliver a more powerful hold than standard two-piece collars. Attach them anywhere along a shaft when other components are already installed or you can't access the ends. They grip evenly without marring the shaft, so you can reposition or remove them later.
    Black-Oxide Carbon Steel—Dark and matted for a finished look, but with minimal corrosion resistance. Best for dry environments.
    Clamping
    Screw
    For Round Shafts
    For Shaft
    Dia.
    OD
    Wd.
    Type
    No.
    Included
    Each
    Black-Oxide Carbon Steel
    2 7/16"4 1/4"1"Socket Head28386K240000000
     

    Shaft Collars

    Image of Product. Front orientation. Shaft Collars.
    Slide these collars from one end of your shaft and tighten the clamping screw. They grip firmly and evenly without marring the shaft, so you can reposition or remove them later.
    Black-Oxide Carbon Steel—Dark and matted for a finished look, but with minimal corrosion resistance. Best for dry environments.
    Zinc-Plated Carbon Steel—A step up from plain carbon steel collars, these withstand occasional exposure to moisture.
    316 Stainless Steel—More corrosion resistant than 303 stainless steel collars. These collars withstand salt water and harsh chemicals, such as bleach, chlorine, and phosphoric acid.
    Aluminum—One-third the weight of steel and corrosion resistant.
    Clamping
    Screw
    For Shaft
    Dia.
    OD
    Wd.
    Type
    No.
    Included
    Each
    Black-Oxide Carbon Steel
    2 7/16"3 1/2"3/4"Socket Head16435K74000000
     
    Zinc-Plated Carbon Steel
    2 7/16"3 1/2"3/4"Socket Head19961K5200000
     
    316 Stainless Steel
    2 7/16"3 1/2"3/4"Socket Head19421T4200000
     
    Aluminum
    2 7/16"3 1/2"3/4"Socket Head16157K5200000
     

    Quick-Disconnect (QD) Bushings

    Image of Product. Front orientation. Pulley and Sprocket Bushings. Quick-Disconnect (QD) Bushings, Clamp-On Shaft Mount.
    Image of Attribute. Side1 orientation. Contains Annotated. Quick-Disconnect (QD) Bushings.

    Clamp-On Shaft Mount

    The screw connections on these bushings easily mate to compatible quick-disconnect sprockets and pulleys. Bushings fit quick-disconnect (QD) sprockets and pulleys of the same bushing trade number. As you tighten the included screws, the bushing grips the shaft and pulls it into the sprocket or pulley.
    Keyway
    Overall
    Wd.
    Wd.
    Dp.
    Fastener Tightening
    Torque, in·lbf
    Material
    Includes
    For Shaft
    Dia.
    Each
    Clamp-On Shaft Mount
     
    Bushing Trade Number SF
    2 1/16"5/8"3/16"360Sintered SteelClamping Screws, Machine Key2 7/16"6086K865000000
     
    Bushing Trade Number SK
    1 15/16"5/8"1/16"180Sintered SteelClamping Screws, Machine Key2 7/16"6086K86200000
     

    Flange-Mount Shaft Collars

    Image of Product. Front orientation. Shaft Collars. Flange-Mount Shaft Collars.
    Use the tapped and unthreaded holes on the flange to mount components as needed. To install, slide these collars from one end of your shaft and tighten the clamping screws. The collars grip firmly and evenly without marring the shaft, so you can reposition or remove them later. Collars with keyways have a standard ANSI keyway to lock in place shafts, keys, and key stock.
    Black-Oxide Carbon Steel—Dark and matted for a finished look, but with minimal corrosion resistance. Best for dry environments.
    Flange
    Keyway
    Clamping
    Screw
    Mounting
    Holes
    Unthreaded
    Mounting Holes
    For Shaft
    Dia.
    OD
    Wd.
    OD
    Thk.
    Wd.
    Dp.
    For Shaft
    Type
    Type
    No.
    Included
    Mounting Fasteners
    Included
    Thread
    Size
    No.
    of
    Dia.
    No.
    of
    Each
    Black-Oxide Carbon Steel
    2 7/16"4"1 3/8"5 23/32"1/2"5/8"9/32"KeyedSocket Head2No3/8"-16
    		33/8"39684T370000000
     

    Set Screw Two-Piece Shaft Collars

    Image of Product. Front orientation. Shaft Collars. Set Screw Two-Piece Shaft Collars.
    Attach these traditional collars anywhere along a shaft when other components are already installed or you can't access the ends. Their set screw digs into the shaft for a tight, permanent hold, but one that leaves a gouge. For maximum holding power, make sure the set screw is harder than the shaft.
    Black-Oxide Carbon Steel—Dark and matted for a finished look, but with minimal corrosion resistance. Best for dry environments.
    303 Stainless Steel—Withstand moisture and mild cleaning solutions, such as acetone and ammonia. These are easier to machine than other stainless steel collars.
    Set
    Screw
    Clamping
    Screw
    Each
    For Shaft
    Dia.
    OD
    Wd.
    Type
    No.
    Included
    Type
    No.
    Included
    1-24
    25-Up
    Black-Oxide Carbon Steel
    2 7/16"3 1/2"3/4"Hex Socket1Socket Head21069N16000000000000
     
    303 Stainless Steel
    2 7/16"3 1/2"3/4"Hex Socket1Socket Head21069N380000000000
     

    Oversized Shaft Collars

    Image of Product. Front orientation. Shaft Collars. Oversized Shaft Collars.
    Wider and thicker with a larger clamping screw, these shaft collars deliver a stronger grip than standard collars. Slide them from one end of your shaft and tighten the screw. They clamp firmly and evenly without marring the shaft, so you can reposition or remove them later.
    Black-Oxide Carbon Steel—Dark and matted for a finished look, but with minimal corrosion resistance. Best for dry environments.
    Clamping
    Screw
    For Shaft
    Dia.
    OD
    Wd.
    Type
    No.
    Included
    Each
    Black-Oxide Carbon Steel
    2 7/16"4 1/4"1"Socket Head19951K24000000
     

    Taper-Lock Bushings

    Image of ProductInUse. Front orientation. Pulley and Sprocket Bushings. Taper-Lock Bushings.
    Mount these hubless bushings flush into your sprocket or pulley for a slim profile with no protruding screws. They are for use with taper-lock sprockets of the same bushing trade number. As you tighten the included set screws, the bushing grips the shaft and pulls it into your sprocket or pulley.
    Keyway
    For Shaft
    Dia.
    Overall
    Wd.
    Wd.
    Dp.
    Taper
    Fastener Tightening
    Torque, in·lbf
    Includes
    Each
    Steel
     
    Bushing Trade Number 2517
    2 7/16"1 3/4"5/8"3/16"8°430Machine Key, Set Screws57095K238000000
     
    Bushing Trade Number 3020
    2 7/16"2"5/8"5/16"8°800Set Screws57095K347000000
     
    back to top