How to Identify and Measure Fittings
Pipe size is an industry designation, not the actual size. View information about how to measure threaded and unthreaded pipe and pipe fittings.
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About Nuts, Materials, and Finishes
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Clamps for Vacuum Fittings for Steel Tubing
Use these clamps to connect vacuum tube fittings. Insert two fittings into a clamp and tighten to form a secure seal.
For technical drawings and 3-D models, click on a part number.
- For Use With: Air, Glass, Plastic Pellets, Resins, Wood Chips
- Temperature Range: Neoprene Rubber Gaskets: -20° to 190° F
Silicone Rubber Gaskets: -100° to 500° F - Tubing: Use with steel
Bolt clamps have a stainless steel strip that provides an escape route for electrostatic buildup when used in a fully-grounded system. They have fair corrosion resistance.
Tube-End Weld Nuts
Weld these nuts to round uncoated metal tubes to attach threaded parts, such as rod ends. Also known as tube adapters and weldable threaded tube ends.
For technical drawings and 3-D models, click on a part number.
| For Tube Wall Thick. | Thread Size  | Ht. | Threading | Thread Lg. | Each | |
4130 Alloy Steel | ||||||
|---|---|---|---|---|---|---|
For 1 3/4" Tube OD | ||||||
| 0.12" | 3/4"-16 | 2" | Fully Threaded | 2" | 000000000 | 000000 |
| 0.12" | 1"-14 | 2" | Fully Threaded | 2" | 000000000 | 00000 |
| 0.12" | 7/8"-14 | 2" | Fully Threaded | 2" | 000000000 | 00000 |
| 0.12" | 1 1/4"-12 | 2" | Fully Threaded | 2" | 000000000 | 00000 |
| 0.25" | 3/4"-16 | 2" | Partially Threaded | 1 7/8" | 000000000 | 00000 |
| 0.25" | 1"-14 | 2" | Fully Threaded | 2" | 000000000 | 00000 |
| 0.25" | 7/8"-14 | 2" | Fully Threaded | 2" | 000000000 | 00000 |
Left-Hand Threaded Tube-End Weld Nuts
Use these tube-end nuts with left-hand threaded fasteners. You can weld them to round uncoated metal tubes to attach threaded parts, such as rod ends. Also known as tube adapters and weldable threaded tube ends.
For technical drawings and 3-D models, click on a part number.
| For Tube Wall Thick. | Thread Size | Ht. | Threading | Thread Lg. | Each | |
4130 Alloy Steel | ||||||
|---|---|---|---|---|---|---|
For 1 3/4" Tube OD | ||||||
| 0.12" | 3/4"-16 | 2" | Fully Threaded | 2" | 000000000 | 000000 |
| 0.12" | 1"-14 | 2" | Fully Threaded | 2" | 000000000 | 00000 |
| 0.12" | 1 1/4"-12 | 2" | Fully Threaded | 2" | 000000000 | 00000 |
| 0.25" | 3/4"-16 | 2" | Partially Threaded | 1 7/8" | 000000000 | 00000 |
| 0.25" | 7/8"-14 | 2" | Fully Threaded | 2" | 000000000 | 00000 |
| 0.25" | 1"-14 | 2" | Fully Threaded | 2" | 000000000 | 00000 |