McMaster-Carr logo
    Enter e-mail addresses in the fields below
    Message
    Cancel
    Comments
    E-mail address (if you would like a response)
    44 Products

    Machinable Low-Profile Fixture Clamps

    Image of ProductInUse. Front orientation. Fixture Clamps. Machinable Low-Profile Fixture Clamps.
    Image of ProductInUse. Top orientation. Contains Annotated, Border. Fixture Clamps. Machinable Low-Profile Fixture Clamps.
    Image of Attribute. Front orientation. Contains Annotated. Machinable Low-Profile Fixture Clamps.
    Machine these fixture clamps to match the contours of your workpiece for a stronger grip. They install into a slot in your fixture to grip at the bottom of workpiece edges, giving the cutting tool maximum access to the workpiece. Thread the clamp into a tapped hole and give the center screw a half turn for quick clamping.
    Head
    Thread
    Drive
    Each
    Package
    Lg.
    Wd.
    Ht.
    Max.
    Movement
    Material
    Max. Clamping
    Force, lbf
    Min. Workpiece
    Contact
    For Slot
    Dp.
    Size
    Lg.
    Size
    Style
    Screw
    Material
    Each
    Pkg.
    Qty.
    Pkg.
    Blunt Edge
    1"1"0.7"0.05"Steel6,0001/4"0.45"3/8"-16
    23/32"5/16"Hex
    Steel3123N1300000043123N110000000
     

    Low-Profile Fixture Clamps

    Image of ProductInUse. Front orientation. Fixture Clamps. Low-Profile Fixture Clamps.
    Image of ProductInUse. Top orientation. ZoomedIn view. Contains Annotated, Border. Fixture Clamps. Low-Profile Fixture Clamps.
    Image of Product. Front orientation. Contains Annotated. Low-Profile Fixture Clamps.
    Image of Specification. Blunt Edge. Front orientation. ZoomedIn view. Contains Border. Blunt Edge. Low-Profile Fixture Clamps.

    Blunt Edge

    Image of Specification. Knife Edge. Front orientation. ZoomedIn view. Contains Border. Knife Edge. Low-Profile Fixture Clamps.

    Knife Edge

    Install these clamps into a slot in your fixture to grip at the bottom of workpiece edges, giving the cutting tool maximum access to your workpiece. Thread the clamp into a tapped hole and give the center screw a half turn for quick clamping.
    Blunt Edge—Clamps with a blunt edge are less likely to mar your workpiece.
    Knife Edge—Clamps with a knife edge bite into your workpiece for faster and more aggressive machining.
    Head
    Thread
    Drive
    Each
    Package
    Lg.
    Wd.
    Ht.
    Max.
    Movement
    Material
    Max. Clamping
    Force, lbf
    Min. Workpiece
    Contact
    For Slot
    Dp.
    Size
    Lg.
    Size
    Style
    Screw
    Material
    Each
    Pkg.
    Qty.
    Pkg.
    Blunt Edge
    1"1"11/16"0.05"Steel6,0000.25"0.45"3/8"-16
    23/32"5/16"Hex
    Steel2172A2200000042172A420000000
     
    Knife Edge
    1"1"11/16"0.05"Steel6,0000.25"0.45"3/8"-16
    23/32"5/16"Hex
    Steel2172A210000042172A41000000
     

    Fixture Clamps

    Image of ProductInUse. Front orientation. Fixture Clamps. Fixture Clamps.
    Image of ProductInUse. Top orientation. ZoomedIn view. Contains Annotated, Border. Fixture Clamps. Fixture Clamps.
    Image of Product. Front orientation. Contains Annotated. Fixture Clamps.
    Hold a workpiece securely from the side with minimal contact, leaving more of the workpiece free for machining. Thread the clamp into a tapped hole and give the center screw a half turn for quick clamping.
    Head
    Thread
    Drive
    Each
    Package
    Wd.
    Ht.
    Max.
    Movement
    Material
    Max. Clamping
    Force, lbf
    Size
    Lg.
    Size
    Style
    Screw
    Material
    Each
    Pkg.
    Qty.
    Pkg.
    1 3/16"1/2"0.1"Brass6,0005/8"-11
    1 1/8"3/8"Hex
    Steel84865A47000000484865A67000000
     

    Fixture Clamps for Castings and Rough Parts

    Image of ProductInUse. Front orientation. Fixture Clamps. Fixture Clamps for Castings and Rough Parts.
    Image of Product. Front orientation. Contains Annotated. Fixture Clamps for Castings and Rough Parts.
    Unlike the smooth and flat edges of standard fixture clamps, these clamps have ridges that bite into parts, making them good for gripping castings and rough-cut stock. They hold workpieces securely from the side with minimal contact, leaving more of the surface free for machining. Thread the clamp into a tapped hole and give the center screw a half turn for quick clamping.
    Head
    Thread
    Drive
    Each
    Package
    Dia.
    Ht.
    Max.
    Movement
    Material
    Max. Clamping
    Force, lbf
    Size
    Lg.
    Size
    Style
    Screw
    Material
    Each
    Pkg.
    Qty.
    Pkg.
    1 3/16"1/2"0.01"Steel6,0005/8"-11
    1 1/8"3/8"Hex
    Steel3120N1600000043120N120000000
     

    Machinable Fixture Clamps

    Image of ProductInUse. Front orientation. Fixture Clamps. Machinable Fixture Clamps.
    Image of ProductInUse. Top orientation. ZoomedIn view. Contains Annotated, Border. Fixture Clamps. Machinable Fixture Clamps.
    Image of Product. Front orientation. Contains Annotated. Machinable Fixture Clamps.
    Machine these clamps to match the contours of your workpiece. Thread the clamp into a tapped hole and give the center screw a half turn for quick clamping. They hold securely while making minimal contact, leaving more of the workpiece free for machining.
    Head
    Thread
    Drive
    Each
    Package
    Wd.
    Ht.
    Max.
    Movement
    Material
    Max. Clamping
    Force, lbf
    Max. Machinable
    Wd.
    Size
    Lg.
    Size
    Style
    Screw
    Material
    Each
    Pkg.
    Qty.
    Pkg.
    1 23/32"35/64"0.1"Steel6,0000.35"5/8"-11
    1 1/8"3/8"Hex
    Steel2007N1400000042007N54000000
     

    Machine Table Clamps for Round Workpieces

    Image of Product. Front orientation. Fixture Clamps. Machine Table Clamps for Round Workpieces.
    Secure large, round parts for machining. Often paired with V-blocks, these clamps come with five lengths of chain that you can combine to fit a variety of workpieces. Join them with the included connecting links. These clamps also come with nonmarring pads, which snap into the chain to keep it from damaging your workpiece. One end of these clamps has a cam-locking hook to secure the chain to the table and lock it around the workpiece. The other adjusts the tension, pulling the chain tight for a firm hold. Mount these clamps into slot nuts or fixture plates with socket head cap screws (not included).
    Clamps
    Extra Chain Pads
    Overall
    Lg.
    For Max. Workpiece
    Dia.
    Max. Clamping
    Force, lbf
    Chain
    Wd.
    Roller Chain
    Trade No.
    Chain
    Material
    Clamp
    Material
    Includes
    Each
    Each
    40"14"6,00013/16"50SteelSteel1 Hook Assembly
    1 Adding-and-Connecting Link
    5 Chain Lengths (1 each in 5/8", 1 1/4", 4 3/8", 9 3/8" and 19 3/8" lengths)
    5 Chain Connecting Links
    5 Nonmarring Plastic Chain Pads
    1 Chain Tensioner
    3143N1100000003143N1300000
     
    Roller Chain and Links

    Machinable Dual-Clamping Fixture Clamps

    Image of ProductInUse. Front orientation. Fixture Clamps. Machinable Dual-Clamping Fixture Clamps.
    Image of Product. Front orientation. Contains Annotated. Machinable Dual-Clamping Fixture Clamps.
    Machine these fixture clamps to match the contours of your workpieces for a stronger grip. Place the clamp between the two workpieces in a fixture and tighten the screw to extend the sides of the clamp, creating a secure hold against both workpieces. Minimal contact with the workpiece leaves more of its surface accessible for machining. Each clamp comes with a locking plate to keep the clamp rigid while machining it to fit your application.
    Thread
    Drive
    Lg.
    Wd.
    Ht.
    Max. Clamping
    Force, lbf
    Max. Machinable
    Wd.
    Size
    Lg.
    Size
    Style
    Material
    Screw
    Material
    Wedge
    Material
    Each
    2 1/2"4"2"6,0000.8"5/8"-11
    2 1/2"1/2"Hex
    AluminumSteelSteel3122N150000000
     

    Inside Diameter Fixture Clamps

    Image of ProductInUse. Front orientation. Contains Annotated. Fixture Clamps. Inside Diameter Fixture Clamps.
    Image of ProductInUse. Front orientation. Exploded view. Fixture Clamps. Inside Diameter Fixture Clamps.
    Image of Attribute. Top Actuation. Front orientation. Contains Annotated. Fixture Clamps. Inside Diameter Fixture Clamps, Top Actuation.

    Top Actuation

    Secure a workpiece from the inside diameter, leaving the outside clear for machining. Machine these clamps to match the precise size and contours of your workpiece ID. Mount the clamp to your fixture with the included screws and place your workpiece over it. Turn the socket head cap screw to expand the clamp.
    Top Actuation—Top-actuated clamps tighten from the top of the clamp, so workpieces need a through hole.
    Thread
    Drive
    For ID Range
    Max. Clamp
    Expansion
    Ht.
    Flange
    OD
    Max. Clamping
    Force, lbf
    Size
    Lg.
    Size
    Style
    Mounting Fasteners
    Included
    No. of Mounting
    Holes
    Material
    Screw
    Material
    Each
    Top Actuation
    1.15" to 9.85"0.08"1 51/64"6"6,0005/8"-11
    2"1/2"Hex
    Yes4AluminumSteel1341N240000000
     

    Dual-Clamping Fixture Clamps

    Image of ProductInUse. Front orientation. Fixture Clamps. Dual-Clamping Fixture Clamps.
    Image of Product. Front orientation. Contains Annotated. Dual-Clamping Fixture Clamps.
    Set one of these clamps between two workpieces in a fixture and tighten the screw to push the clamp's sides out for a secure hold. The minimal contact leaves more of the workpieces free for machining.
    Thread
    Drive
    Each
    Package
    Lg.
    Wd.
    Ht.
    Max. Clamping
    Force, lbf
    Size
    Lg.
    Size
    Style
    Material
    Screw
    Material
    Wedge
    Material
    Each
    Pkg.
    Qty.
    Pkg.
    2 1/2"2"2 1/32"6,0005/8"-11
    2 1/2"1/2"Hex
    AluminumSteelSteel8693A17000000028693A670000000
     
    back to top