Hold-Down Fixture Clamps
Tighten the spring-loaded socket head cap screw on these clamps to hold your workpiece from above. Also known as swing clamps, you can rotate the hook out of the way when the screw is loose. Install these clamps in a drilled hole for maximum rigidity.
Add mounting blocks to rotate the clamp’s hook consistently—these blocks have a stop every 90°. They’re also useful if you don’t have an easy mounting location for the fixture clamp.
Clamps | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Body | Thread | Drive | Mounting Blocks | ||||||||||
| Max. Clamping Clearance | Holding Capacity, lbs. | Reach | Lg. | Dia. | Size | Lg. | Size | Style | Material | Each | Each | ||
| 7/8" | 4,800 | 11/16" | 1 3/8" | 5/8" | 5/16"-18 | 1 3/4" | 1/4" | Hex | Steel | 0000000 | 000000 | 000000 | 00 |
| 29/32" | 2,200 | 1 3/16" | 1 3/8" | 3/4" | 5/16"-18 | 2" | 1/4" | Hex | Black-Oxide Steel | 0000000 | 00000 | 0000000 | 000000 |
| 1 17/32" | 2,700 | 2 3/8" | 2 1/4" | 1" | 1/2"-13 | 3" | 3/8" | Hex | Black-Oxide Steel | 0000000 | 00000 | 0000000 | 00000 |
| 1 17/32" | 3,700 | 2 3/8" | 2 3/8" | 1 1/4" | 5/8"-11 | 3 1/4" | 1/2" | Hex | Black-Oxide Steel | 0000000 | 000000 | 0000000 | 000000 |
| 1 5/8" | 6,400 | 1" | 2 1/4" | 7/8" | 3/8"-16 | 3" | 5/16" | Hex | Steel | 0000000 | 00000 | 000000 | 00 |
| 1 5/8" | 12,000 | 1" | 2 1/4" | 7/8" | 1/2"-13 | 3" | 3/8" | Hex | Steel | 0000000 | 00000 | 000000 | 00 |
| 1 13/16" | 17,000 | 1 7/16" | 2 3/4" | 1 1/8" | 5/8"-11 | 3 1/2" | 1/2" | Hex | Steel | 0000000 | 00000 | 000000 | 00 |
Air-Powered Hold-Down Fixture Clamps
Adjust the air pressure to quickly and consistently clamp and release parts. The arm on these clamps rotates 90° into position over the workpiece and then moves straight down to clamp. Disengage to rotate the arm out of the way and load or unload parts. Also known as swing clamps, they are used with a solid state switch or Reed function switch with M8 male 3-pin connectors. Connect the clamp's ports to a control valve and an air line. Clamps mount with screws.
Clamps with rubber-tipped holding screw are nonmarring. Tip is removable.
Body | Holding Screw | Female Air Inlet and Outlet | Mount. Holes | |||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Max. Clamping Clearance | Vertical Travel During Rotation | Max. Clamping Stroke | Holding Cap., lbs. | Reach | Wd. | Dp. | O'all Ht. | Thread Size | Tip Material | Pipe Size | Thread Size | Thread Type | Mount. Fasteners Included | No. of | Dia. | Material | Each | |
90° Clockwise Rotation | ||||||||||||||||||
| 4 3/8" | 15/32" | 3/8" | 35 | 1 1/8" | 1 1/4" | 1 1/4" | 4 3/4" | 10-32 | Steel | __ | 10-32 | UNF | No | 6 | 3/16" | Aluminum | 00000000 | 0000000 |
| 5 1/2" | 3/4" | 1/2" | 130 | 2" | 2" | 3" | 6 3/8" | 3/8"-16 | Rubber | 1/8 | __ | NPT | No | 6 | 11/32" | Aluminum | 00000000 | 000000 |
90° Counterclockwise Rotation | ||||||||||||||||||
| 4 3/8" | 15/32" | 3/8" | 35 | 1 1/8" | 1 1/4" | 1 1/4" | 4 3/4" | 10-32 | Steel | __ | 10-32 | UNF | No | 6 | 3/16" | Aluminum | 00000000 | 000000 |
| 5 1/2" | 3/4" | 1/2" | 130 | 2" | 2" | 3" | 6 3/8" | 3/8"-16 | Rubber | 1/8 | __ | NPT | No | 6 | 11/32" | Aluminum | 00000000 | 000000 |
Threaded Air-Powered Hold-Down Fixture Clamps
Screw these clamps directly into a tapped hole and use air pressure to quickly and consistently clamp and release parts. The arm rotates 90° into position over the workpiece and then moves straight down to clamp. Disengage to rotate the arm out of the way and load or unload parts. Also known as swing clamps, they're used with a solid state switch or Reed function switch with M8 male 3-pin connectors. Connect the clamp's ports to a control valve and an air line. To hold clamps in an untapped hole, use a mounting block (sold separately).
Clamps with rubber-tipped holding screw are nonmarring. Tip is removable.
Body | Holding Screw | Female Air Inlet and Outlet | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Max. Clamping Clearance | Vertical Travel During Rotation | Max. Clamping Stroke | Holding Cap., lbs. | Reach | Thread Size | Thread Lg. | O'all Ht. | Thread Size | Tip Material | Pipe Size | Thread Size | Thread Type | Material | Each | |
90° Clockwise Rotation | |||||||||||||||
| 4 3/8" | 15/32" | 3/8" | 35 | 1 1/8" | 1 1/8"-16 | 2 7/8" | 4 3/4" | 10-32 | Steel | __ | 10-32 | UNF | Aluminum | 00000000 | 0000000 |
| 5 5/16" | 3/4" | 1/2" | 95 | 1 5/8" | 1 3/4"-12 | 3 1/4" | 6 1/8" | 3/8"-16 | Rubber | 1/8 | __ | NPT | Aluminum | 00000000 | 000000 |
90° Counterclockwise Rotation | |||||||||||||||
| 4 3/8" | 15/32" | 3/8" | 35 | 1 1/8" | 1 1/8"-16 | 2 7/8" | 4 3/4" | 10-32 | Steel | __ | 10-32 | UNF | Aluminum | 00000000 | 000000 |
| 5 5/16" | 3/4" | 1/2" | 95 | 1 5/8" | 1 3/4"-12 | 3 1/4" | 6 1/8" | 3/8"-16 | Rubber | 1/8 | __ | NPT | Aluminum | 00000000 | 000000 |
Light Duty Fixture Clamp Kits
Made of plastic, the clamps in these kits are used for woodworking and other machining jobs that don’t need high clamping pressure. Each kit comes with edge guides and three different types of clamps, so you can secure workpieces of all shapes and sizes. Edge guides are often used as a frame to consistently position multiple workpieces for repeat jobs. Ring fixture clamps tighten with a twist—they press into the side of your workpiece to hold it in place. Side clamps apply force both inward and downward without blocking the top of your workpiece. Hold-down clamps grip the top and side of your workpiece for the most secure hold.
| No. of Pieces | Includes | Material | Mounting Screw Thread Size | Each | |
| 12 | 3 Edge Guides, 2 Ring Fixture Clamps, 2 Side Clamps, 4 Hold-Down Clamps, Nylon Mounting Hardware | Plastic | 1/4"-20 | 0000000 | 0000000 |
Revolving Screw Clamps
When loosened, you can spin the body of this clamp around its mounting point for better access to the workpiece. Position over your workpiece and turn the handle to clamp down. Mount the clamp in a threaded hole or on a mounting base (sold separately).
