System of Measurement System of Measurement |
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Thread Size Thread Size | Show |
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Thread Size Thread Size | Hide |
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Finish Finish |
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Mount Type Mount Type |
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Thread Direction Thread Direction |
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Hole Shape Hole Shape |
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REACH (Registration, Evaluation, Authorization and Restriction of Chemicals) REACH (Registration,Evaluation, Authorization and Restriction of Chemicals) |
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RoHS (Restriction of Hazardous Substances) RoHS (Restriction ofHazardous Substances) |
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Stud Material Stud Material |
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DFARS (Defense Acquisition Regulations Supplement) DFARS (Defense AcquisitionRegulations Supplement) |
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Maximum Temperature Maximum Temperature |
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Selecting Compatible Lead Screws and Nuts
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Ball-Lever Shafts
Attach a ball knob (not included) to one of these shafts to create custom handles for operating machinery. Mount the other end into a threaded hole. These shafts can also be used to create your own gear levers.
Steel shafts have a black-oxide finish for mild rust resistance.
Stainless steel shafts have excellent corrosion resistance, making them the best choice for harsh environments. They also have good chemical resistance.
For technical drawings and 3-D models, click on a part number.
Thread | Stud | Each | ||||||
|---|---|---|---|---|---|---|---|---|
| Size | Lg. 1 | Lg. 2 | Handle Lg. | Dia. | Stud Material | 1-9 | 10-Up | |
Threaded Stud | ||||||||
Black-Oxide Steel | ||||||||
| 1/2"-20 | 5/8" | 5/8" | 4 1/8" | 5/8" | Steel | 0000000 | 000000 | 000000 |
| 1/2"-20 | 5/8" | 5/8" | 6 1/8" | 5/8" | Steel | 0000000 | 00000 | 00000 |
303 Stainless Steel | ||||||||
| 1/2"-20 | 5/8" | 5/8" | 4 1/8" | 5/8" | 303 Stainless Steel | 0000000 | 00000 | 00000 |
| 1/2"-20 | 5/8" | 5/8" | 6 1/8" | 5/8" | 303 Stainless Steel | 0000000 | 00000 | 00000 |
Handle Nuts
Use these handles for quick assembly and disassembly. Their offset grip provides leverage, making them a good alternative to wing nuts. Long shafts can thread through these handles for mounting versatility.
Iron handle nuts with a zinc-plated finish have corrosion resistance.
Stainless steel handle nuts have excellent corrosion resistance, making them the best choice for harsh environments. They also have good chemical resistance.
For technical drawings and 3-D models, click on a part number.
Threaded-Stud Knobs
Mount these knobs into a threaded hole. They provide a secure grip to position, tighten, and hold fixtures, equipment, and machinery.
Steel knobs are stronger than iron. They have a black-oxide finish for mild rust resistance.
Stainless steel knobs have excellent corrosion resistance, making them the best choice for harsh environments. They also have good chemical resistance.
For technical drawings and 3-D models, click on a part number.
Threaded-Hole Knobs
Install these knobs on a threaded stud. They provide a secure grip to position, tighten, and hold fixtures, equipment, and machinery.
Steel knobs have a black-oxide finish for mild rust resistance.
Stainless steel knobs have excellent corrosion resistance, making them the best choice for harsh environments. They also have good chemical resistance.
Plastic knobs are a lightweight alternative to metal. They resist oil, grease, and solvents. Phenolic has good scratch resistance.
For technical drawings and 3-D models, click on a part number.
Thread | Head | Hub | Each | |||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Size | Dp. | Dia. | Ht. | Dia. | Ht. | Insert Material | Temperature Range, °F | 1-9 | 10-Up | |
Style 1—Knurled Grip | ||||||||||
Black-Oxide Steel | ||||||||||
| 1/2"-20 | 3/4" | 2 1/2" | 9/16" | 1 1/2" | 15/16" | __ | __ | 0000000 | 000000 | 000000 |
303 Stainless Steel | ||||||||||
| 1/2"-20 | 3/4" | 2 1/2" | 9/16" | 1 1/2" | 15/16" | __ | __ | 00000000 | 00000 | 00000 |
Style 23—Four Arm Grip | ||||||||||
Black Phenolic Plastic | ||||||||||
| 1/2"-20 | 5/8" | 2" | 1/2" | 7/8" | 5/8" | Brass | -30 to 400° | 0000000 | 0000 | 0000 |
Threaded Through-Hole Knobs
Long shafts can thread through these knobs for mounting versatility. The knobs provide a secure grip to position, tighten, and hold fixtures, equipment, and machinery.
Steel knobs are stronger than iron. Those with a black-oxide finish have mild rust resistance.
Stainless steel knobs have excellent corrosion resistance, making them the best choice for harsh environments. They also have good chemical resistance.
Plastic knobs are a lightweight alternative to metal. They resist oil, grease, and solvents. Phenolic has good scratch resistance.
For technical drawings and 3-D models, click on a part number.
Thread | Head | Hub | Each | |||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Size | Dp. | Dia. | Ht. | Dia. | Ht. | Insert Material | Temperature Range, °F | 1-9 | 10-Up | |
Style 1—Knurled Grip | ||||||||||
303 Stainless Steel | ||||||||||
| 1/2"-20 | 1 1/2" | 2 1/2" | 9/16" | 1 1/2" | 15/16" | __ | __ | 00000000 | 000000 | 000000 |
Black-Oxide Steel | ||||||||||
| 1/2"-20 | 1 1/2" | 2 1/2" | 9/16" | 1 1/2" | 15/16" | __ | __ | 0000000 | 00000 | 00000 |
Style 6—Four Arm Grip | ||||||||||
Black Phenolic Plastic | ||||||||||
| 1/2"-20 | 5/8" | 2" | 1/2" | 7/8" | 5/8" | Brass | -30° to 400° | 0000000 | 0000 | 0000 |
Threaded-Hole Ball Knobs
Install these traditional, easy-to-grip ball knobs on a threaded stud. They're good for control levers and push-pull rods.
Stainless steel knobs have excellent corrosion resistance, making them the best choice for harsh environments. They also have good chemical resistance.
Aluminum knobs have mild corrosion resistance, are lightweight, and are nonmagnetic.
Brass knobs have good corrosion resistance and are nonmagnetic.
Plastic knobs are a lightweight alternative to metal. They resist oil, grease, and solvents. Phenolic has good scratch resistance.
For technical drawings and 3-D models, click on a part number.
Thread | Each | ||||||
|---|---|---|---|---|---|---|---|
| Size | Dp. | Head Dia. | Insert Material | Temperature Range, °F | 1-9 | 10-Up | |
Style 1 | |||||||
Steel | |||||||
| 1/2"-20 | 5/8" | 1 3/8" | __ | __ | 0000000 | 00000 | 00000 |
303 Stainless Steel | |||||||
| 1/2"-20 | 5/8" | 1 3/8" | __ | __ | 0000000 | 00000 | 00000 |
Aluminum | |||||||
| 1/2"-20 | 5/8" | 1 3/8" | __ | __ | 0000000 | 0000 | 0000 |
Brass | |||||||
| 1/2"-20 | 5/8" | 1 3/8" | __ | __ | 00000000 | 00000 | 00000 |
Black Phenolic Plastic | |||||||
| 1/2"-20 | 5/8" | 1 1/4" | Brass | -30° to 400° | 0000000 | 0000 | 0000 |
| 1/2"-20 | 5/8" | 1 3/8" | Zinc-Plated Steel | -30° to 400° | 0000000 | 0000 | 0000 |
| 1/2"-20 | 1 1/8" | 1 15/16" | Brass | -30° to 400° | 0000000 | 0000 | 0000 |
Red Phenolic Plastic | |||||||
| 1/2"-20 | 5/8" | 1 3/8" | Zinc-Plated Steel | -30° to 400° | 0000000 | 0000 | 0000 |
| 1/2"-20 | 1 1/8" | 1 15/16" | Brass | -30° to 400° | 0000000 | 0000 | 0000 |
Threaded Plug Gauges with Calibration Certificate
These gauges come with a certificate of calibration traceable to NIST that states they’ve passed a test for accuracy. They allow you to inspect internal threads on parts. All have a go gauge on one end and a no-go gauge on the other end. A taperlock handle lets you quickly replace worn gauges.
Check the minimum internal thread size with the go gauge end, and check the maximum internal thread size with the no-go gauge end. A part is within tolerance if it’s easy to thread the go gauge into the part but difficult to thread the no-go gauge more than two turns.
Threads have different classes of fit. Thread fit designates the tightness or looseness of mating threads. For example, inch threads with a 3B fit have tighter tolerances than threads with a 2B fit.
For technical drawings and 3-D models, click on a part number.
Threaded Plug Gauges
These have a go gauge on one end and a no-go gauge on the other end. They allow you to inspect internal threads on parts. A taperlock handle lets you quickly replace worn gauges.
Check the minimum internal thread size with the go gauge end, and check the maximum internal thread size with the no-go gauge end. A part is within tolerance if it’s easy to thread the go gauge into the part but difficult to thread the no-go gauge more than two turns.
Threads have different classes of fit. Thread fit designates the tightness or looseness of mating threads. For example, inch threads with a 3B fit have tighter tolerances than threads with a 2B fit.
For technical drawings and 3-D models, click on a part number.