About Thumb Screw and Binding Post Materials
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Large-Diameter Swivel-Tip Thumb Screws
A wide tip provides more gripping power than standard swivel-tip thumb screws. To use, remove the tip, thread the screw through the hole, and attach the tip on the other side. The tip swivels in all directions for maximum contact with angled and uneven surfaces. A retaining spring holds the pad in place. They have a black-oxide finish that provides corrosion resistance in dry environments. Length is measured from under the collar. Optional extra-large steel tips offer more gripping strength. Optional plastic tips are soft, nonmarring, and made of acetal.
For technical drawings and 3-D models, click on a part number.
Thumb Screws | |||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Tip | Head | Collar | Optional Extra-Large Steel Tips | Optional Nonmarring Plastic Tips | Replacement Retaining Springs | ||||||||||||||
| Lg. | Dia. | Lg. | Ht. | Wd. | Dia. | Ht. | Max. Swivel Angle | Each | Lg. | Dia. | Each | Lg. | Dia. | Each | Each | ||||
Black-Oxide Steel | |||||||||||||||||||
1/4"-20  | |||||||||||||||||||
| 1 1/4" | 5/16" | 3/16" | 5/8" | 1 1/8" | 9/16" | 5/16" | 10° | 000000000 | 000000 | 7/32" | 5/8" | 000000000 | 00000 | 3/16" | 5/16" | 000000000 | 00000 | 000000000 | 00000 |
| 2" | 5/16" | 3/16" | 5/8" | 1 1/8" | 9/16" | 5/16" | 10° | 000000000 | 00000 | 7/32" | 5/8" | 000000000 | 0000 | 3/16" | 5/16" | 000000000 | 0000 | 000000000 | 000 |
| 2 3/4" | 5/16" | 3/16" | 5/8" | 1 1/8" | 9/16" | 5/16" | 10° | 000000000 | 00000 | 7/32" | 5/8" | 000000000 | 0000 | 3/16" | 5/16" | 000000000 | 0000 | 000000000 | 000 |
| 3 1/2" | 5/16" | 3/16" | 5/8" | 1 1/8" | 9/16" | 5/16" | 10° | 000000000 | 00000 | 7/32" | 5/8" | 000000000 | 0000 | 3/16" | 5/16" | 000000000 | 0000 | 000000000 | 000 |
5/16"-18 | |||||||||||||||||||
| 1 5/16" | 3/8" | 7/32" | 7/8" | 1 1/2" | 11/16" | 5/8" | 10° | 000000000 | 00000 | 1/4" | 3/4" | 000000000 | 0000 | 7/32" | 3/8" | 000000000 | 0000 | 000000000 | 000 |
| 2 1/16" | 3/8" | 7/32" | 7/8" | 1 1/2" | 11/16" | 5/8" | 10° | 000000000 | 00000 | 1/4" | 3/4" | 000000000 | 0000 | 7/32" | 3/8" | 000000000 | 0000 | 000000000 | 000 |
| 2 13/16" | 3/8" | 7/32" | 7/8" | 1 1/2" | 11/16" | 5/8" | 10° | 000000000 | 00000 | 1/4" | 3/4" | 000000000 | 0000 | 7/32" | 3/8" | 000000000 | 0000 | 000000000 | 000 |
| 3 9/16" | 3/8" | 7/32" | 7/8" | 1 1/2" | 11/16" | 5/8" | 10° | 000000000 | 00000 | 1/4" | 3/4" | 000000000 | 0000 | 7/32" | 3/8" | 000000000 | 0000 | 000000000 | 000 |
3/8"-16 | |||||||||||||||||||
| 1 5/16" | 7/16" | 1/4" | 1" | 2" | 13/16" | 1/2" | 10° | 000000000 | 00000 | 9/32" | 3/4" | 000000000 | 0000 | 1/4" | 7/16" | 000000000 | 0000 | 000000000 | 000 |
| 2 1/16" | 7/16" | 1/4" | 1" | 2" | 13/16" | 1/2" | 10° | 000000000 | 00000 | 9/32" | 3/4" | 000000000 | 0000 | 1/4" | 7/16" | 000000000 | 0000 | 000000000 | 000 |
| 2 13/16" | 7/16" | 1/4" | 1" | 2" | 13/16" | 1/2" | 10° | 000000000 | 00000 | 9/32" | 3/4" | 000000000 | 0000 | 1/4" | 7/16" | 000000000 | 0000 | 000000000 | 000 |
| 3 9/16" | 7/16" | 1/4" | 1" | 2" | 13/16" | 1/2" | 10° | 000000000 | 00000 | 9/32" | 3/4" | 000000000 | 0000 | 1/4" | 7/16" | 000000000 | 0000 | 000000000 | 000 |
| 4 5/16" | 7/16" | 1/4" | 1" | 2" | 13/16" | 1/2" | 10° | 000000000 | 00000 | 9/32" | 3/4" | 000000000 | 0000 | 1/4" | 7/16" | 000000000 | 0000 | 000000000 | 000 |
1/2"-13 | |||||||||||||||||||
| 2 1/16" | 9/16" | 5/16" | 1 1/8" | 2 1/2" | 1" | 9/16" | 10° | 000000000 | 00000 | 3/8" | 7/8" | 000000000 | 0000 | 5/16" | 9/16" | 000000000 | 0000 | 000000000 | 000 |
| 2 13/16" | 9/16" | 5/16" | 1 1/8" | 2 1/2" | 1" | 9/16" | 10° | 000000000 | 00000 | 3/8" | 7/8" | 000000000 | 0000 | 5/16" | 9/16" | 000000000 | 0000 | 000000000 | 000 |
| 3 9/16" | 9/16" | 5/16" | 1 1/8" | 2 1/2" | 1" | 9/16" | 10° | 000000000 | 00000 | 3/8" | 7/8" | 000000000 | 0000 | 5/16" | 9/16" | 000000000 | 0000 | 000000000 | 000 |
| 4 5/16" | 9/16" | 5/16" | 1 1/8" | 2 1/2" | 1" | 9/16" | 10° | 000000000 | 00000 | 3/8" | 7/8" | 000000000 | 0000 | 5/16" | 9/16" | 000000000 | 0000 | 000000000 | 000 |
| 5 1/16" | 9/16" | 5/16" | 1 1/8" | 2 1/2" | 1" | 9/16" | 10° | 000000000 | 00000 | 3/8" | 7/8" | 000000000 | 0000 | 5/16" | 9/16" | 000000000 | 0000 | 000000000 | 000 |
5/8"-11 | |||||||||||||||||||
| 2 5/16" | 11/16" | 13/32" | 1 1/4" | 3" | 1 1/4" | 5/8" | 10° | 000000000 | 00000 | 7/16" | 1" | 000000000 | 0000 | 13/32" | 11/16" | 000000000 | 0000 | 000000000 | 000 |
| 3 1/16" | 11/16" | 13/32" | 1 1/4" | 3" | 1 1/4" | 5/8" | 10° | 000000000 | 00000 | 7/16" | 1" | 000000000 | 0000 | 13/32" | 11/16" | 000000000 | 0000 | 000000000 | 000 |
| 3 13/16" | 11/16" | 13/32" | 1 1/4" | 3" | 1 1/4" | 5/8" | 10° | 000000000 | 00000 | 7/16" | 1" | 000000000 | 0000 | 13/32" | 11/16" | 000000000 | 0000 | 000000000 | 000 |
| 4 9/16" | 11/16" | 13/32" | 1 1/4" | 3" | 1 1/4" | 5/8" | 10° | 000000000 | 00000 | 7/16" | 1" | 000000000 | 0000 | 13/32" | 11/16" | 000000000 | 0000 | 000000000 | 000 |
| 5 5/16" | 11/16" | 13/32" | 1 1/4" | 3" | 1 1/4" | 5/8" | 10° | 000000000 | 00000 | 7/16" | 1" | 000000000 | 0000 | 13/32" | 11/16" | 000000000 | 0000 | 000000000 | 000 |
Swivel-Tip Thumb Screws
The tip is narrow so it will fit through threaded holes. For maximum contact with angled and uneven surfaces, the tip swivels in all directions. A black-oxide finish provides corrosion resistance in dry environments. Length is measured from under the head.
For technical drawings and 3-D models, click on a part number.
Tip | Head | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| Lg. | Dia. | Lg. | Dia. | Ht. | Max. Swivel Angle | Tensile Strength, psi | Hardness | Each | |
Black-Oxide Steel | |||||||||
1/4"-20 | |||||||||
| 1 1/2" | 3/16" | 1/4" | 1" | 3/8" | 7.5° | 80,000 | Rockwell B85 | 000000000 | 000000 |
| 2" | 3/16" | 1/4" | 1" | 3/8" | 7.5° | 80,000 | Rockwell B85 | 000000000 | 00000 |
5/16"-18 | |||||||||
| 1 1/2" | 1/4" | 1/4" | 1 1/8" | 7/16" | 7.5° | 80,000 | Rockwell B85 | 000000000 | 00000 |
| 2" | 1/4" | 1/4" | 1 1/8" | 7/16" | 7.5° | 80,000 | Rockwell B85 | 000000000 | 00000 |
| 2 1/2" | 1/4" | 1/4" | 1 1/8" | 7/16" | 7.5° | 80,000 | Rockwell B85 | 000000000 | 00000 |
3/8"-16 | |||||||||
| 1 1/2" | 5/16" | 3/8" | 1 1/4" | 1/2" | 7.5° | 80,000 | Rockwell B85 | 000000000 | 00000 |
| 2" | 5/16" | 3/8" | 1 1/4" | 1/2" | 7.5° | 80,000 | Rockwell B85 | 000000000 | 00000 |
| 2 1/2" | 5/16" | 3/8" | 1 1/4" | 1/2" | 7.5° | 80,000 | Rockwell B85 | 000000000 | 00000 |
| 3" | 5/16" | 3/8" | 1 1/4" | 1/2" | 7.5° | 80,000 | Rockwell B85 | 000000000 | 00000 |
1/2"-13 | |||||||||
| 1 1/2" | 3/8" | 3/8" | 1 1/4" | 9/16" | 7.5° | 80,000 | Rockwell B85 | 000000000 | 00000 |
| 2" | 3/8" | 3/8" | 1 1/4" | 9/16" | 7.5° | 80,000 | Rockwell B85 | 000000000 | 00000 |
| 2 1/2" | 3/8" | 3/8" | 1 1/4" | 9/16" | 7.5° | 80,000 | Rockwell B85 | 000000000 | 00000 |
| 3" | 3/8" | 3/8" | 1 1/4" | 9/16" | 7.5° | 80,000 | Rockwell B85 | 000000000 | 00000 |
Ultra-Flexible Swivel-Tip Thumb Screws
A large swivel angle allows these thumb screws to make better contact with angled and uneven surfaces than nonremovable swivel-tip thumb screws. The removable tip is narrow to fit through threaded holes and left-hand threaded to resist loosening as you tighten the screw. A black-oxide finish provides corrosion resistance in dry environments. Length is measured from under the head.
For technical drawings and 3-D models, click on a part number.
Tip | Head | |||||||
|---|---|---|---|---|---|---|---|---|
| Lg. | Dia. | Lg. | Dia. | Ht. | Max. Swivel Angle | Tensile Strength, psi | Each | |
Black-Oxide Steel | ||||||||
1/4"-20 | ||||||||
| 1 1/2" | 3/16" | 1/4" | 1" | 5/16" | 10° | 70,000 | 000000000 | 000000 |
| 2" | 3/16" | 1/4" | 1" | 5/16" | 10° | 70,000 | 000000000 | 00000 |
5/16"-18 | ||||||||
| 1 1/2" | 1/4" | 1/4" | 1 1/8" | 3/8" | 10° | 70,000 | 000000000 | 00000 |
| 2" | 1/4" | 1/4" | 1 1/8" | 3/8" | 10° | 70,000 | 000000000 | 00000 |
| 2 1/2" | 1/4" | 1/4" | 1 1/8" | 3/8" | 10° | 70,000 | 000000000 | 00000 |
3/8"-16 | ||||||||
| 1 1/2" | 5/16" | 3/8" | 1 1/4" | 7/16" | 10° | 70,000 | 000000000 | 00000 |
| 2" | 5/16" | 3/8" | 1 1/4" | 7/16" | 10° | 70,000 | 000000000 | 00000 |
| 2 1/2" | 5/16" | 3/8" | 1 1/4" | 7/16" | 10° | 70,000 | 000000000 | 00000 |
| 3" | 5/16" | 3/8" | 1 1/4" | 7/16" | 10° | 70,000 | 000000000 | 00000 |
Auto-Adjusting Low-Profile Hold-Down Toggle Clamps
Hold workpieces of different thicknesses with one clamp. These clamps automatically adjust to compensate for variations in size. The handle secures in a horizontal position for more clearance above the clamp than standard hold-down toggle clamps. They have an open arm, so you can move the holding screw to any position along the arm. The holding capacity stays the same regardless of the holding screw's position. The screw has a nonmarring tip.
For technical drawings and 3-D models, click on a part number.
Arm | When Clamped | Holding Screws | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Holding Capacity, lbs. | Max. Clamping Clearance | For Max. Workpiece Variation | Ht. | Lg. | Opening Angle | O'all Lg. | O'all Ht. | No. of | Tip Material | Thread Size | Body Material | Each | |
With Open Arm | |||||||||||||
| 450 | 13/16" | 3/4" | 13/16" | 2 1/4" | 90° | 6 9/16" | 1 1/2" | 1 | Plastic | M6 | Steel | 0000000 | 000000 |
| 700 | 1 9/16" | 1 3/8" | 13/16" | 3" | 90° | 8 9/16" | 1 7/8" | 1 | Plastic | M8 | Steel | 0000000 | 00000 |
| 700 | 2 3/8" | 1 3/8" | 1 1/2" | 3" | 90° | 8 9/16" | 2 1/2" | 1 | Plastic | M8 | Steel | 0000000 | 00000 |
Side-Mount Hold-Down Toggle Clamps
Often used to clamp lids and covers on containers, these bolt into place.
Stainless steel clamps have excellent corrosion resistance in wet environments.
For technical drawings and 3-D models, click on a part number.
Arm | When Clamped | Holding Screws | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Holding Capacity, lbs. | Max. Clamping Clearance | Ht. | Lg. | Opening Angle | O'all Lg. | O'all Ht. | No. of | Tip Material | Thread Size | Each | |
With Open Arm | |||||||||||
Steel | |||||||||||
| 200 | 3/16" | 5/8" | 1 11/16" | 90° | 4 5/8" | 2 7/16" | 2 | Steel, Rubber | M5 | 0000000 | 000000 |
| 200 | 1/2" | 1" | 2 3/8" | 90° | 6 11/16" | 3 3/8" | 2 | Steel, Rubber | M6 | 0000000 | 00000 |
| 350 | 1/2" | 1 1/4" | 2 3/4" | 90° | 7 11/16" | 4" | 2 | Steel, Rubber | M8 | 0000000 | 00000 |
| 400 | 15/16" | 1 3/4" | 4 1/4" | 90° | 10 5/8" | 5 5/16" | 2 | Steel, Rubber | M10 | 0000000 | 00000 |
18-8 Stainless Steel | |||||||||||
| 200 | 3/16" | 5/8" | 1 11/16" | 90° | 4 5/8" | 2 7/16" | 2 | Stainless Steel, Rubber | M5 | 0000000 | 00000 |
| 200 | 1/2" | 1" | 2 3/8" | 90° | 6 11/16" | 3 3/8" | 2 | Stainless Steel, Rubber | M6 | 0000000 | 00000 |
| 350 | 1/2" | 1 1/4" | 2 3/4" | 90° | 7 11/16" | 4" | 2 | Stainless Steel, Rubber | M8 | 0000000 | 00000 |
Weld-On Side-Mount Hold-Down Toggle Clamps
Weld these clamps to the side of an object or drill your own holes in the mounting plate and bolt into place. They are often used to clamp lids and covers on containers.
For technical drawings and 3-D models, click on a part number.
Arm | When Clamped | Holding Screws | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Holding Capacity, lbs. | Max. Clamping Clearance | Lg. | Opening Angle | O'all Lg. | O'all Ht. | No. of | Tip Material | Thread Size | Body Material | Each | |
With Solid Arm | |||||||||||
| 800 | 9 3/8" | 3 1/16" | 85° | 6 1/2" | 10 7/8" | 2 | Steel, Rubber | M10 | Steel | 0000000 | 0000000 |
Pliers-Style Toggle Clamps
For repetitive clamping, turn the holding screw to adjust the opening size one time, and then use the handles to secure and release workpieces.
Clamps with lever lock release open when you press the lever.
For technical drawings and 3-D models, click on a part number.