About Measuring Hose and Tube Clamps
What's the best way to determine the clamp size you'll need? Simply measure the outside diameter of your hose with the fitting installed. Some clamps accommodate a range of sizes, so be sure the size you need falls in the middle of that range.
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About Bonding and Grounding for Static Control
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Extra Heavy Duty C-Clamps
With five times the capacity of standard C-clamps, these are the highest capacity clamps we offer. They tighten with a wrench.
For technical drawings and 3-D models, click on a part number.
Opening | ||||||
|---|---|---|---|---|---|---|
| Max. | Min. | Reach | Holding Capacity, lbs. | Screw Material | Each | |
Steel Body | ||||||
Square Handle | ||||||
| 1 3/8" | 0" | 1 1/16" | 5,600 | Steel | 0000000 | 000000 |
| 1 3/4" | 0" | 1 7/16" | 8,750 | Steel | 0000000 | 00000 |
| 2 5/16" | 0" | 1 7/8" | 12,500 | Steel | 0000000 | 00000 |
| 3 7/16" | 0" | 2 1/2" | 16,250 | Steel | 0000000 | 000000 |
| 4 1/2" | 0" | 2 7/8" | 20,000 | Steel | 0000000 | 000000 |
| 5 3/8" | 0" | 3 1/8" | 23,800 | Steel | 0000000 | 000000 |
| 6 7/16" | 0" | 3 1/2" | 27,500 | Steel | 0000000 | 000000 |
| 8 1/2" | 0" | 3 7/8" | 31,250 | Steel | 0000000 | 000000 |
| 10 7/16" | 0" | 4 1/8" | 35,000 | Steel | 0000000 | 000000 |
| 12 3/8" | 0" | 4 1/2" | 40,000 | Steel | 0000000 | 000000 |
C-Clamps
Steel clamps are stronger than iron clamps.
Copper-plated clamp components resist weld spatter.
For technical drawings and 3-D models, click on a part number.
Opening | ||||||
|---|---|---|---|---|---|---|
| Max. | Min. | Reach | Holding Capacity, lbs. | Screw Material | Each | |
Powder-Coated Iron Body | ||||||
Steel Sliding T-Handle | ||||||
| 1" | 0" | 1 1/16" | 600 | Steel | 0000000 | 00000 |
| 1 1/2" | 0" | 1 1/2" | 800 | Steel | 0000000 | 0000 |
| 2" | 0" | 1 1/8" | 800 | Steel | 0000000 | 0000 |
| 2 1/2" | 0" | 1 7/16" | 800 | Steel | 0000000 | 00000 |
| 2 1/2" | 0" | 2 1/2" | 1,000 | Steel | 0000000 | 00000 |
| 3" | 0" | 2" | 1,400 | Steel | 0000000 | 00000 |
| 4" | 0" | 2 3/4" | 1,500 | Steel | 0000000 | 00000 |
| 5" | 0" | 3" | 1,200 | Steel | 0000000 | 00000 |
| 6" | 0" | 3 1/4" | 1,400 | Steel | 0000000 | 00000 |
| 8" | 0" | 4" | 1,700 | Steel | 0000000 | 00000 |
Powder-Coated Steel Body | ||||||
Black Oxide Steel Sliding T-Handle | ||||||
| 2" | 0" | 2 1/8" | 3,500 | Black Oxide Steel | 0000000 | 00000 |
| 3" | 0" | 2 3/8" | 3,500 | Black Oxide Steel | 0000000 | 00000 |
| 4" | 0" | 3 1/4" | 6,200 | Black Oxide Steel | 0000000 | 00000 |
| 6" | 0" | 4 1/8" | 6,900 | Black Oxide Steel | 0000000 | 00000 |
| 10" | 0" | 6" | 8,000 | Black Oxide Steel | 0000000 | 000000 |
| 12" | 0" | 6 1/4" | 9,300 | Black Oxide Steel | 00000000 | 000000 |
Iron Body | ||||||
Steel Sliding T-Handle | ||||||
| 2 1/2" | 0" | 1 3/4" | 1,100 | Steel | 000000 | 00000 |
| 3" | 0" | 1 7/8" | 1,800 | Steel | 000000 | 00000 |
| 4" | 0" | 2 1/16" | 2,100 | Steel | 000000 | 00000 |
| 5" | 0" | 2 1/2" | 2,200 | Steel | 000000 | 00000 |
| 6" | 0" | 2 3/4" | 2,400 | Steel | 000000 | 00000 |
| 8" | 0" | 3 1/4" | 2,700 | Steel | 0000000 | 00000 |
| 10" | 0" | 3 5/8" | 2,850 | Steel | 0000000 | 00000 |
| 12" | 0" | 3 5/8" | 2,850 | Steel | 0000000 | 00000 |
| 14" | 0" | 3 3/4" | 2,850 | Steel | 000000 | 000000 |
Steel Body | ||||||
Black Oxide Steel Sliding T-Handle | ||||||
| 8 1/4" | 0" | 4 15/16" | 6,900 | Black Oxide Steel | 0000000 | 000000 |
Copper-Plated Steel Sliding T-Handle | ||||||
| 2 1/8" | 0" | 2 1/4" | 3,500 | Copper-Plated Steel | 0000000 | 00000 |
| 4 1/4" | 0" | 3 1/4" | 6,200 | Copper-Plated Steel | 00000000 | 00000 |
| 6 1/16" | 0" | 4 1/16" | 6,600 | Copper-Plated Steel | 00000000 | 00000 |
| 8 1/4" | 0" | 4 15/16" | 6,900 | Copper-Plated Steel | 0000000 | 000000 |
| 10 1/8" | 2" | 5 7/8" | 8,000 | Copper-Plated Steel | 0000000 | 000000 |
| 12 1/4" | 2" | 6 1/4" | 9,300 | Copper-Plated Steel | 00000000 | 000000 |
Heavy Duty C-Clamps
These clamps have twice the capacity of standard C-clamps.
For technical drawings and 3-D models, click on a part number.
Opening | ||||||
|---|---|---|---|---|---|---|
| Max. | Min. | Reach | Holding Capacity, lbs. | Screw Material | Each | |
Steel Body | ||||||
Sliding T-Handle | ||||||
| 2 15/16" | 0" | 2" | 8,750 | Steel | 000000 | 0000000 |
| 3 3/4" | 0" | 2 3/8" | 10,000 | Steel | 000000 | 000000 |
| 5 3/4" | 7/8" | 2 1/2" | 11,250 | Steel | 000000 | 000000 |
| 7 3/4" | 2 11/16" | 2 5/8" | 12,500 | Steel | 000000 | 000000 |
| 9 7/8" | 5 1/16" | 2 11/16" | 13,750 | Steel | 000000 | 000000 |
| 11 3/4" | 7" | 2 7/8" | 15,000 | Steel | 000000 | 000000 |
Nonsparking C-Clamps
All components of these clamps are made of aluminum-bronze that is FM approved. They satisfy OSHA requirements that specify nonsparking tools for locations where flammable vapors and combustible residues are present.
Warning: Do not use these tools in direct contact with acetylene.
For technical drawings and 3-D models, click on a part number.
Extended-Reach C-Clamps
Clamp farther in from the edge of a workpiece than with other C-clamps.
Steel clamps are stronger than iron clamps.
For technical drawings and 3-D models, click on a part number.
Opening | ||||||
|---|---|---|---|---|---|---|
| Max. | Min. | Reach | Holding Capacity, lbs. | Screw Material | Each | |
Powder-Coated Iron Body | ||||||
Sliding T-Handle | ||||||
| 1" | 0" | 3" | 350 | Black-Oxide Steel | 000000 | 000000 |
| 2" | 0" | 3 1/2" | 450 | Black-Oxide Steel | 000000 | 00000 |
| 2 1/2" | 0" | 4 3/4" | 1,600 | Black-Oxide Steel | 000000 | 00000 |
| 2 1/2" | 0" | 6 1/4" | 1,600 | Black-Oxide Steel | 000000 | 00000 |
| 3" | 0" | 4 1/2" | 700 | Black-Oxide Steel | 000000 | 00000 |
Steel Body | ||||||
Sliding T-Handle | ||||||
| 4" | 0" | 4" | 4,100 | Steel | 000000 | 00000 |
| 4" | 0" | 6 1/4" | 1,600 | Copper-Plated Steel | 0000000 | 00000 |
| 6" | 0" | 5" | 5,400 | Steel | 000000 | 00000 |
| 6" | 0" | 9 7/8" | 1,800 | Copper-Plated Steel | 0000000 | 000000 |
| 8" | 0" | 13 3/4" | 2,000 | Copper-Plated Steel | 0000000 | 000000 |
| 8" | 2" | 6" | 5,900 | Steel | 000000 | 000000 |
| 10" | 0" | 15 3/4" | 2,400 | Copper-Plated Steel | 0000000 | 000000 |
Duct Hose Clamps for Spiral Duct
Also known as bridge clamps, these worm-drive clamps align with the spiral support on wire duct hose to provide a tight seal.
When looking at the end of your hose, a right-hand spiral twists away from you clockwise; a left-hand spiral twists away from you counterclockwise. Clamps have very good corrosion resistance. Do not exceed the maximum torque or clamps may be damaged.
Note: When choosing a clamp, measure the outside diameter of your hose with the fitting installed.
For technical drawings and 3-D models, click on a part number.
Clamp ID Range | Band | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Inch | mm | Wd. | Thick. | Min. Temp., °F | Max. Temp., °F | Max. Torque, in.-lbs. | Drive Style  | Hex Size | Reusable | Each | |
For Right-Hand Spiral Direction | |||||||||||
200/300 Series Stainless Steel with 410 Stainless Steel Screw | |||||||||||
| 1 3/4" to 2 1/2" | 44 to 64 | 3/8" | 0.02" | -100° | 1500° | __ | Slotted, External Hex | 5/16" | Yes | 00000000 | 00000 |
| 2 1/2" to 3 1/2" | 64 to 89 | 3/8" | 0.02" | -100° | 1500° | __ | Slotted, External Hex | 1/4" | Yes | 00000000 | 0000 |
301 Stainless Steel with 305 Stainless Steel Screw | |||||||||||
| 3 1/4" to 4 3/4" | 83 to 121 | 1/2" | 0.025" | -250° | 500° | 35 | Slotted, External Hex | 5/16" | Yes | 00000000 | 00000 |
| 4 1/4" to 5 3/4" | 108 to 146 | 1/2" | 0.025" | -250° | 500° | 35 | Slotted, External Hex | 5/16" | Yes | 00000000 | 00000 |
| 5 1/4" to 6 3/4" | 133 to 171 | 1/2" | 0.025" | -250° | 500° | 35 | Slotted, External Hex | 5/16" | Yes | 00000000 | 00000 |
| 7 1/4" to 8 3/4" | 184 to 222 | 1/2" | 0.025" | -250° | 500° | 35 | Slotted, External Hex | 5/16" | Yes | 00000000 | 00000 |
| 8 1/4" to 9 3/4" | 210 to 248 | 1/2" | 0.025" | -250° | 500° | 35 | Slotted, External Hex | 5/16" | Yes | 00000000 | 00000 |
| 9 1/4" to 10 3/4" | 235 to 273 | 1/2" | 0.025" | -250° | 500° | 35 | Slotted, External Hex | 5/16" | Yes | 00000000 | 00000 |
| 11 1/4" to 12 3/4" | 286 to 324 | 1/2" | 0.025" | -250° | 500° | 35 | Slotted, External Hex | 5/16" | Yes | 00000000 | 00000 |
| 13 1/4" to 14 3/4" | 337 to 375 | 1/2" | 0.025" | -250° | 500° | 35 | Slotted, External Hex | 5/16" | Yes | 00000000 | 00000 |
| 15 1/4" to 16 3/4" | 387 to 425 | 1/2" | 0.025" | -250° | 500° | 35 | Slotted, External Hex | 5/16" | Yes | 00000000 | 00000 |
| 17 1/4" to 18 3/4" | 438 to 476 | 1/2" | 0.025" | -250° | 500° | 35 | Slotted, External Hex | 5/16" | Yes | 00000000 | 00000 |
304 Stainless Steel with Steel Screw | |||||||||||
| 13/16" to 1 1/16" | 22 to 28 | 3/16" | 0.02" | -30° | 225° | 13 | Phillips, External Hex | 7/32" | Yes | 00000000 | 00000 |
| 1" to 1 1/8" | 25 to 29 | 11/32" | 0.031" | -30° | 225° | 27 | Phillips, External Hex | 1/4" | Yes | 00000000 | 00000 |
| 1 3/16" to 1 3/8" | 30 to 35 | 11/32" | 0.031" | -30° | 225° | 27 | Phillips, External Hex | 1/4" | Yes | 00000000 | 00000 |
| 1 1/4" to 1 1/2" | 32 to 37 | 11/32" | 0.031" | -30° | 225° | 27 | Phillips, External Hex | 1/4" | Yes | 00000000 | 00000 |
| 1 1/2" to 1 3/4" | 38 to 44 | 11/32" | 0.031" | -30° | 225° | 27 | Phillips, External Hex | 1/4" | Yes | 00000000 | 00000 |
| 20" to 21" | 510 to 535 | 15/32" | 0.04" | -30° | 225° | 44 | Phillips, External Hex | 1/4" | Yes | 00000000 | 00000 |
For Left-Hand Spiral Direction | |||||||||||
200/300 Series Stainless Steel with 410 Stainless Steel Screw | |||||||||||
| 2 1/8" to 3 1/8" | 54 to 79 | 3/8" | 0.04" | -100° | 1500° | __ | Slotted, External Hex | 1/4" | Yes | 00000000 | 0000 |
301 Stainless Steel with 305 Stainless Steel Screw | |||||||||||
| 3 1/4" to 4 3/4" | 83 to 121 | 1/2" | 0.025" | -250° | 500° | 35 | Slotted, External Hex | 5/16" | Yes | 00000000 | 00000 |
| 4 1/4" to 5 3/4" | 108 to 146 | 1/2" | 0.025" | -250° | 500° | 35 | Slotted, External Hex | 5/16" | Yes | 00000000 | 00000 |
| 5 1/4" to 6 3/4" | 133 to 171 | 1/2" | 0.025" | -250° | 500° | 35 | Slotted, External Hex | 5/16" | Yes | 00000000 | 00000 |
| 7 1/4" to 8 3/4" | 184 to 222 | 1/2" | 0.025" | -250° | 500° | 35 | Slotted, External Hex | 5/16" | Yes | 00000000 | 00000 |
| 8 1/4" to 9 3/4" | 210 to 248 | 1/2" | 0.025" | -250° | 500° | 35 | Slotted, External Hex | 5/16" | Yes | 00000000 | 00000 |
| 9 1/4" to 10 3/4" | 235 to 273 | 1/2" | 0.025" | -250° | 500° | 35 | Slotted, External Hex | 5/16" | Yes | 00000000 | 00000 |
| 11 1/4" to 12 3/4" | 286 to 324 | 1/2" | 0.025" | -250° | 500° | 35 | Slotted, External Hex | 5/16" | Yes | 00000000 | 00000 |
| 13 1/4" to 14 3/4" | 337 to 375 | 1/2" | 0.025" | -250° | 500° | 35 | Slotted, External Hex | 5/16" | Yes | 00000000 | 00000 |
| 15 1/4" to 16 3/4" | 387 to 425 | 1/2" | 0.025" | -250° | 500° | 35 | Slotted, External Hex | 5/16" | Yes | 00000000 | 00000 |
| 17 1/4" to 18 3/4" | 438 to 476 | 1/2" | 0.025" | -250° | 500° | 35 | Slotted, External Hex | 5/16" | Yes | 00000000 | 00000 |
Duct Hose Clamps with Grounding Cable
Prevent static charge buildup while securely connecting duct hose with a wire spiral. These clamps come with a grounding cable to protect you and your equipment from shock, even in dusty areas. Because the cable connects through the bridge of the clamp, you can ground your hose without damaging it or exposing the spiral.
To create a tight seal, these clamps—also known as bridge clamps—align on both sides of the wire spiral in your duct hose. The bridge crosses over the top of the wire to hold the clamp in place. Made of stainless steel, these clamps also resist rusting.
All of these clamps are for right-hand spiral hose. When looking at the end of your hose, a right-hand spiral twists away from you clockwise. To choose a clamp, measure the outside diameter of your hose with the fitting installed. Do not exceed the maximum torque or you may damage your clamp.
For technical drawings and 3-D models, click on a part number.
Clamp ID Range | Band | Copper Cable | For Right-Hand Spiral Direction | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| For OD | Inch | mm | Wd. | Thick. | Electrical Connection Type | Lg., ft. | OD | Insulation Color | Temp. Range, °F | Max. Torque, ft.-lbs. | Drive Style | Hex Size, mm | Reusable | Specifications Met | Each | |
304 Stainless Steel with Steel Screw | ||||||||||||||||
Insulated Cable | ||||||||||||||||
| 1 1/2"-2" | 1 3/8" to 2 3/16" | 35 to 55 | 3/8" | 0.031" | Ring Terminal (1/8" Hole Dia.) | 1.5 | 0.07" | Green | -30° to 225° | 26.5 | Phillips, External Hex | 7 | Yes | DIN 3017 | 00000000 | 000000 |
| 2"-3" | 1 3/4" to 2 9/16" | 45 to 65 | 3/8" | 0.031" | Ring Terminal (1/8" Hole Dia.) | 1.5 | 0.07" | Green | -30° to 225° | 26.5 | Phillips, External Hex | 7 | Yes | DIN 3017 | 00000000 | 00000 |
| 2"-3" | 2 3/16" to 2 15/16" | 55 to 75 | 3/8" | 0.031" | Ring Terminal (1/8" Hole Dia.) | 1.5 | 0.07" | Green | -30° to 225° | 26.5 | Phillips, External Hex | 7 | Yes | DIN 3017 | 00000000 | 00000 |
| 3"-4" | 2 15/16" to 3 3/4" | 75 to 95 | 3/8" | 0.031" | Ring Terminal (3/16" Hole Dia.) | 1.5 | 0.07" | Green | -30° to 225° | 26.5 | Phillips, External Hex | 7 | Yes | DIN 3017 | 00000000 | 00000 |
| 3"-4", 4"-6" | 3 3/4" to 4 1/2" | 95 to 115 | 3/8" | 0.031" | Ring Terminal (3/16" Hole Dia.) | 1.5 | 0.07" | Green | -30° to 225° | 26.5 | Phillips, External Hex | 7 | Yes | DIN 3017 | 00000000 | 00000 |
| 4"-6" | 4 1/8" to 4 15/16" | 105 to 125 | 3/8" | 0.031" | Ring Terminal (3/16" Hole Dia.) | 1.5 | 0.07" | Green | -30° to 225° | 26.5 | Phillips, External Hex | 7 | Yes | DIN 3017 | 00000000 | 00000 |
| 4"-6" | 4 15/16" to 5 11/16" | 125 to 145 | 3/8" | 0.031" | Ring Terminal (3/16" Hole Dia.) | 1.5 | 0.07" | Green | -30° to 225° | 26.5 | Phillips, External Hex | 7 | Yes | DIN 3017 | 00000000 | 00000 |
| 4"-6", 6"-12" | 5 11/16" to 6 1/2" | 145 to 165 | 3/8" | 0.031" | Ring Terminal (3/16" Hole Dia.) | 1.5 | 0.07" | Green | -30° to 225° | 26.5 | Phillips, External Hex | 7 | Yes | DIN 3017 | 00000000 | 00000 |
| 6"-12" | 6 1/8" to 6 7/8" | 155 to 175 | 3/8" | 0.031" | Ring Terminal (3/16" Hole Dia.) | 1.5 | 0.07" | Green | -30° to 225° | 26.5 | Phillips, External Hex | 7 | Yes | DIN 3017 | 00000000 | 00000 |
| 6"-12" | 7 5/16" to 8 1/16" | 185 to 205 | 3/8" | 0.031" | Ring Terminal (3/16" Hole Dia.) | 1.5 | 0.07" | Green | -30° to 225° | 26.5 | Phillips, External Hex | 7 | Yes | DIN 3017 | 00000000 | 00000 |
| 6"-12" | 7 11/16" to 8 7/16" | 195 to 215 | 3/8" | 0.031" | Ring Terminal (3/16" Hole Dia.) | 1.5 | 0.07" | Green | -30° to 225° | 26.5 | Phillips, External Hex | 7 | Yes | DIN 3017 | 00000000 | 00000 |