Mount Type Mount Type |
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| Press Fit | Threaded Hole |
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| Clamp On |
Thread Size Thread Size |
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Material Material |
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For Screw Head Type For Screw Head Type |
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Head Height Head Height |
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DFARS (Defense Acquisition Regulations Supplement) DFARS (Defense AcquisitionRegulations Supplement) |
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RoHS (Restriction of Hazardous Substances) RoHS (Restriction ofHazardous Substances) |
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Handle Length Handle Length |
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REACH (Registration, Evaluation, Authorization and Restriction of Chemicals) REACH (Registration,Evaluation, Authorization and Restriction of Chemicals) |
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Selecting Compatible Lead Screws and Nuts
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Screw-Head Mount Knobs
To build a custom knob or thumb screw, pair one of these knobs with a hex or socket head screw and press the knob and screw together. All of these knobs provide a secure grip to position, tighten, and hold fixtures, equipment, and machinery. Made of plastic, they resist oil, grease, and solvents. Use color to identify equipment controls and components at a glance.
For technical drawings and 3-D models, click on a part number.
Head | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| For Screw Size | Dia. | Wd. | Ht. | Temperature Range, °F | Choose a Color | Pkg. Qty. | Pkg. | ||
Style 1—Knurled Grip | |||||||||
Acetal Plastic—For Socket Head Screws | |||||||||
| No. 4 | 5/16" | __ | 11/64" | 35° to 180° | 100 | 000000000 | 000000 | 00 | |
| No. 6 | 3/8" | __ | 3/16" | 35° to 180° | 100 | 000000000 | 00000 | 00 | |
| No. 8 | 1/2" | __ | 7/32" | 35° to 180° | 100 | 000000000 | 00000 | 00 | |
| No. 10 | 5/8" | __ | 1/4" | 35° to 180° | 50 | 000000000 | 0000 | 00 | |
| 1/4" | 3/4" | __ | 5/16" | 35° to 180° | 50 | 000000000 | 00000 | 00 | |
| 1/4" | 1" | __ | 5/16" | 35° to 180° | 50 | 000000000 | 00000 | 00 | |
| 5/16" | 1" | __ | 13/32" | 35° to 180° | 25 | 000000000 | 0000 | 00 | |
| M3 | 10mm | __ | 4.5mm | 35° to 180° | 50 | 000000000 | 0000 | 00 | |
| M4 | 13mm | __ | 5.5mm | 35° to 180° | 50 | 000000000 | 0000 | 00 | |
| M5 | 16mm | __ | 6.6mm | 35° to 180° | 50 | 000000000 | 00000 | 00 | |
| M6 | 19mm | __ | 7.8mm | 35° to 180° | 25 | 000000000 | 0000 | 00 | |
| M6 | 26mm | __ | 7.8mm | 35° to 180° | 25 | 000000000 | 0000 | 00 | |
| M8 | 26mm | __ | 9.8mm | 35° to 180° | 25 | 000000000 | 0000 | 00 | |
Style 2—Single Arm Grip | |||||||||
Acetal Plastic—For Socket Head Screws | |||||||||
| No. 10 | __ | 13/16" | 11/32" | 35° to 180° | 50 | 000000000 | 0000 | 00 | |
| 1/4" | __ | 1" | 7/16" | 35° to 180° | 50 | 000000000 | 00000 | 00 | |
| 5/16" | __ | 1 3/16" | 17/32" | 35° to 180° | 50 | 000000000 | 00000 | 00 | |
Style 3—Two Arm Grip | |||||||||
Acetal Plastic—For Socket Head Screws | |||||||||
| No. 10 | __ | 1" | 1/4" | 35° to 180° | 50 | 000000000 | 0000 | 00 | |
| 1/4" | __ | 1 1/4" | 5/16" | 35° to 180° | 50 | 000000000 | 00000 | 00 | |
| 5/16" | __ | 1 1/2" | 13/32" | 35° to 180° | 25 | 000000000 | 0000 | 00 | |
| 3/8" | __ | 1 3/4" | 15/32" | 35° to 180° | 25 | 000000000 | 0000 | 00 | |
| M5 | __ | 26mm | 6.6mm | 35° to 180° | 50 | 000000000 | 0000 | 00 | |
| M6 | __ | 30mm | 7.8mm | 35° to 180° | 50 | 000000000 | 00000 | 00 | |
| M8 | __ | 38mm | 10.3mm | 35° to 180° | 50 | 000000000 | 00000 | 00 | |
| M10 | __ | 45mm | 12.5mm | 35° to 180° | 25 | 000000000 | 0000 | 00 | |
Each | |||||||||
| 1-9 | 10-Up | ||||||||
Nylon Plastic—For Socket Head Screws | |||||||||
| 1/4" | __ | 1 1/8" | 9/16" | -15° to 150° | Black | __ | 00000000 | 0000 | 00000 |
| Pkg. | |||||||||
Style 4—Three Arm Grip | |||||||||
Polypropylene Plastic—For Socket Head Screws | |||||||||
| No. 10 | 3/4" | __ | 1/4" | -40° to 125° | Black | 10 | 000000000 | 0000 | 00 |
Style 5—Four Arm Grip | |||||||||
Polypropylene Plastic—For Hex Head Screws | |||||||||
| 3/8" | 2 1/4" | __ | 1" | -40° to 125° | Black | 10 | 000000000 | 00000 | 00 |
Style 6—Five Arm Grip | |||||||||
Polypropylene Plastic—For Hex Head Screws | |||||||||
| No. 10 | 1 1/4" | __ | 3/4" | -40° to 125° | Black | 10 | 000000000 | 00000 | 00 |
Style 7—Six Arm Grip | |||||||||
Acetal Plastic—For Socket Head Screws | |||||||||
| 1/4" | 1 1/2" | __ | 15/32" | 35° to 180° | 10 | 000000000 | 0000 | 00 | |
| 5/16" | 1 1/2" | __ | 13/32" | 35° to 180° | 10 | 000000000 | 0000 | 00 | |
| 3/8" | 1 1/2" | __ | 15/32" | 35° to 180° | 10 | 000000000 | 0000 | 00 | |
| M6 | 38mm | __ | 12.2mm | 35° to 180° | 10 | 000000000 | 0000 | 00 | |
| M8 | 38mm | __ | 10.4mm | 35° to 180° | 10 | 000000000 | 0000 | 00 | |
| M10 | 38mm | __ | 12.5mm | 35° to 180° | 10 | 000000000 | 0000 | 00 | |
Screw-Head Mount Knob Assortments
Keep a convenient selection of knobs on hand. To build a custom knob or thumb screw, pair one of these knobs with a socket head screw. Press the knob and screw together using a bench vise or an arbor press. Use these knobs to provide a secure grip to position, tighten, and hold fixtures, equipment, and machinery. Made of plastic, they resist oil, grease, and solvents.
| Total No. of Pieces | Grip Style | No. of Pieces | For Screw Size | Temperature Range, °F | Each | |
Black Acetal Plastic | ||||||
|---|---|---|---|---|---|---|
For Socket Head Screws | ||||||
| 295 | Knurled Single Arm Two Arm Six Arm | 140 15 60 80 | No. 4, No. 6, No. 8, No. 10, 1/4", 5/16" No. 10, 1/4", 5/16" No. 10, 1/4", 5/16", 3/8" 1/4", 5/16", 3/8" | 35° to 180° | 000000000 | 000000 |
| 260 | Knurled Two Arm Six Arm | 120 60 80 | M3, M4, M5, M6, M8 M5, M6, M8 M6, M8, M10 | 35° to 180° | 000000000 | 00000 |
Oversized-Grip Screw-Head Mount Knobs
Convert screws into knobs so large you can grip them with heavy work gloves. Slip these knobs onto a hex or socket head screw and tighten the set screw to secure. They provide a secure grip to position, tighten, and hold fixtures, equipment, and machinery. Made of aluminum, all have mild corrosion resistance, are lightweight, and are nonmagnetic.
For technical drawings and 3-D models, click on a part number.
Head | For Hex Head Screws | For Socket Head Screws | ||||
|---|---|---|---|---|---|---|
| For Screw Size | Dia. | Ht. | Each | Each | ||
Knurled Grip | ||||||
Aluminum | ||||||
| 1/4" | 2 3/4" | 3/8" | 000000000 | 000000 | 000000000 | 000000 |
| 3/8" | 2 3/4" | 3/8" | 000000000 | 00000 | 000000000 | 00000 |
| 1/2" | 2 3/4" | 3/8" | 000000000 | 00000 | 000000000 | 00000 |
| 5/8" | 2 3/4" | 3/8" | 000000000 | 00000 | 000000000 | 00000 |
| 3/4" | 2 3/4" | 3/8" | 000000000 | 00000 | 000000000 | 00000 |
| 1" | 2 3/4" | 3/8" | 000000000 | 00000 | 000000000 | 00000 |
Screw-Head Mount Knobs with Messages
Use these knobs to display important messages. To build a custom knob or thumb screw, pair one of these knobs with a socket head screw. Press the knob and screw together using a bench vise or an arbor press. All of these knobs provide a secure grip to position, tighten, and hold fixtures, equipment, and machinery. Made of plastic, they resist oil, grease, and solvents.
For technical drawings and 3-D models, click on a part number.
Head | ||||||
|---|---|---|---|---|---|---|
| For Screw Size | Dia. | Ht. | Temperature Range, °F | Pkg. Qty. | Pkg. | |
Caution | ||||||
Knurled Grip | ||||||
Black Acetal Plastic—For Socket Head Screws | ||||||
| No. 8 | 1/2" | 1/4" | 32° to 180° | 5 | 000000000 | 00000 |
| No. 10 | 5/8" | 1/4" | 32° to 180° | 5 | 000000000 | 0000 |
| 1/4" | 3/4" | 5/16" | 32° to 180° | 5 | 000000000 | 0000 |
| 5/16" | 1" | 7/16" | 32° to 180° | 5 | 000000000 | 0000 |
Do Not Remove | ||||||
Knurled Grip | ||||||
Black Acetal Plastic—For Socket Head Screws | ||||||
| No. 8 | 1/2" | 1/4" | 32° to 180° | 5 | 000000000 | 0000 |
| No. 10 | 5/8" | 1/4" | 32° to 180° | 5 | 000000000 | 0000 |
| 1/4" | 3/4" | 5/16" | 32° to 180° | 5 | 000000000 | 0000 |
| 5/16" | 1" | 7/16" | 32° to 180° | 5 | 000000000 | 0000 |
Lock/Unlock | ||||||
Knurled Grip | ||||||
Black Acetal Plastic—For Socket Head Screws | ||||||
| No. 8 | 1/2" | 1/4" | 32° to 180° | 5 | 000000000 | 0000 |
| No. 10 | 5/8" | 1/4" | 32° to 180° | 5 | 000000000 | 0000 |
| 1/4" | 3/4" | 5/16" | 32° to 180° | 5 | 000000000 | 0000 |
| 5/16" | 1" | 7/16" | 32° to 180° | 5 | 000000000 | 0000 |
Service Access | ||||||
Knurled Grip | ||||||
Black Acetal Plastic—For Socket Head Screws | ||||||
| No. 8 | 1/2" | 1/4" | 32° to 180° | 5 | 000000000 | 0000 |
| No. 10 | 5/8" | 1/4" | 32° to 180° | 5 | 000000000 | 0000 |
| 1/4" | 3/4" | 5/16" | 32° to 180° | 5 | 000000000 | 0000 |
| 5/16" | 1" | 7/16" | 32° to 180° | 5 | 000000000 | 0000 |
Screw-Head Mount Precise-Control Knobs
To build a custom precise-control knob or thumb screw, pair one of these knobs with a socket head screw. Press the knob and screw together using a bench vise or an arbor press. Then, turn the knob to move the screw 0.005" per graduation and make precise adjustments. Made of plastic, these knobs resist oil, grease, and solvents.
For technical drawings and 3-D models, click on a part number.
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.
Steel handle nuts are stronger than iron.
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.
Thread | ||||||||
|---|---|---|---|---|---|---|---|---|
| Size | Dp. | Pitch | Handle Lg. | Projection | Hub Projection | Each | ||
Threaded Through Hole | ||||||||
Iron | ||||||||
| A | 1/4"-20 | 9/16" | __ | 3 3/16" | 1 9/16" | 9/16" | 000000000 | 00000 |
| A | 1/4"-28 | 9/16" | __ | 3 3/16" | 1 9/16" | 9/16" | 000000000 | 0000 |
| A | 5/16"-18 | 9/16" | __ | 3 3/16" | 1 9/16" | 9/16" | 000000000 | 0000 |
| A | 5/16"-24 | 9/16" | __ | 3 3/16" | 1 9/16" | 9/16" | 000000000 | 0000 |
| A | 3/8"-16 | 5/8" | __ | 3 3/4" | 1 13/16" | 5/8" | 000000000 | 0000 |
| A | 3/8"-24 | 5/8" | __ | 3 3/4" | 1 13/16" | 5/8" | 000000000 | 0000 |
| A | 7/16"-14 | 5/8" | __ | 3 3/4" | 1 13/16" | 5/8" | 000000000 | 0000 |
| A | 7/16"-20 | 5/8" | __ | 3 3/4" | 1 13/16" | 5/8" | 000000000 | 0000 |
| A | 1/2"-13 | 5/8" | __ | 3 15/16" | 1 7/8" | 5/8" | 000000000 | 0000 |
| A | 1/2"-20 | 5/8" | __ | 3 15/16" | 1 7/8" | 5/8" | 000000000 | 0000 |
| A | 5/8"-11 | 3/4" | __ | 4 1/8" | 1 5/8" | 3/4" | 000000000 | 0000 |
| A | 3/4"-10 | 3/4" | __ | 4 1/8" | 1 5/8" | 3/4" | 000000000 | 0000 |
| A | 3/4"-16 | 3/4" | __ | 4 1/8" | 1 5/8" | 3/4" | 000000000 | 0000 |
| A | M8 | 14mm | 1.25 mm | 81mm | 40mm | 14mm | 000000000 | 0000 |
| A | M12 | 16mm | 1.75 mm | 95mm | 46mm | 16mm | 000000000 | 0000 |
| A | M16 | 19mm | 2 mm | 105mm | 41mm | 19mm | 000000000 | 0000 |
| A | M18 | 19mm | 2.5 mm | 105mm | 41mm | 19mm | 000000000 | 0000 |
Zinc-Plated Iron | ||||||||
| A | 1/4"-20 | 9/16" | __ | 3 3/16" | 1 9/16" | 9/16" | 000000000 | 0000 |
| A | 1/4"-28 | 9/16" | __ | 3 3/16" | 1 9/16" | 9/16" | 000000000 | 0000 |
| A | 5/16"-18 | 9/16" | __ | 3 3/16" | 1 9/16" | 9/16" | 000000000 | 0000 |
| A | 5/16"-24 | 9/16" | __ | 3 3/16" | 1 9/16" | 9/16" | 000000000 | 0000 |
| A | 3/8"-16 | 5/8" | __ | 3 3/4" | 1 13/16" | 5/8" | 000000000 | 0000 |
| A | 3/8"-24 | 5/8" | __ | 3 3/4" | 1 13/16" | 5/8" | 000000000 | 0000 |
| A | 7/16"-14 | 5/8" | __ | 3 3/4" | 1 13/16" | 5/8" | 000000000 | 0000 |
| A | 7/16"-20 | 5/8" | __ | 3 3/4" | 1 13/16" | 5/8" | 000000000 | 0000 |
| A | 1/2"-13 | 5/8" | __ | 3 15/16" | 1 7/8" | 5/8" | 000000000 | 0000 |
| A | 1/2"-20 | 5/8" | __ | 3 15/16" | 1 13/16" | 5/8" | 000000000 | 0000 |
| A | 5/8"-11 | 3/4" | __ | 4 1/8" | 1 5/8" | 3/4" | 000000000 | 0000 |
| A | 5/8"-18 | 3/4" | __ | 4 1/8" | 1 5/8" | 3/4" | 000000000 | 0000 |
| A | 3/4"-10 | 3/4" | __ | 4 1/8" | 1 5/8" | 3/4" | 000000000 | 0000 |
| A | 3/4"-16 | 3/4" | __ | 4 1/8" | 1 5/8" | 3/4" | 000000000 | 0000 |
| A | M8 | 14mm | 1.25 mm | 81mm | 40mm | 14mm | 000000000 | 0000 |
| A | M12 | 16mm | 1.75 mm | 95mm | 46mm | 16mm | 000000000 | 0000 |
| A | M16 | 19mm | 2 mm | 105mm | 41mm | 19mm | 000000000 | 0000 |
| A | M18 | 19mm | 2.5 mm | 105mm | 41mm | 19mm | 000000000 | 0000 |
Steel | ||||||||
| B | 3/8"-16 | 19/32" | __ | 3 3/4" | 1 11/16" | 19/32" | 000000000 | 00000 |
| B | 1/2"-13 | 21/32" | __ | 4" | 1 11/16" | 21/32" | 000000000 | 00000 |
| B | 5/8"-11 | 1/2" | __ | 4 3/8" | 1 3/4" | 1/2" | 000000000 | 00000 |
| B | 3/4"-10 | 11/16" | __ | 5 7/16" | 1 13/16" | 11/16" | 000000000 | 00000 |
Stainless Steel | ||||||||
| A | 3/8"-16 | 3/4" | __ | 4 1/8" | 1 5/8" | 3/4" | 00000000 | 00000 |
| A | 3/8"-24 | 3/4" | __ | 4 1/8" | 1 5/8" | 3/4" | 00000000 | 00000 |
| A | 1/2"-13 | 3/4" | __ | 4 1/8" | 1 5/8" | 3/4" | 00000000 | 00000 |
| A | 1/2"-20 | 3/4" | __ | 4 1/8" | 1 5/8" | 3/4" | 00000000 | 00000 |
| A | 5/8"-11 | 3/4" | __ | 4 1/8" | 1 5/8" | 3/4" | 00000000 | 00000 |
| A | 5/8"-18 | 3/4" | __ | 4 1/8" | 1 5/8" | 3/4" | 00000000 | 00000 |
| A | 3/4"-10 | 3/4" | __ | 4 1/8" | 1 5/8" | 3/4" | 00000000 | 00000 |
| A | 3/4"-16 | 3/4" | __ | 4 1/8" | 1 5/8" | 3/4" | 00000000 | 00000 |
| C | 5/16"-18 | 7/16" | __ | 2 17/32" | 1 1/4" | 7/16" | 000000 | 00000 |
| C | 3/8"-16 | 9/16" | __ | 3 1/16" | 1 17/32" | 9/16" | 000000 | 00000 |
| C | 1/2"-13 | 3/4" | __ | 4 1/32" | 2" | 3/4" | 000000 | 00000 |
| C | 5/8"-11 | 7/8" | __ | 5 1/16" | 2 1/2" | 7/8" | 0000000 | 00000 |
| C | 3/4"-10 | 1 1/8" | __ | 6 5/32" | 3 1/16" | 1 1/8" | 0000000 | 00000 |
Machine Handles
These handles are often used for operating machinery.
Threaded through-hole handles allow long shafts to thread through these handles for mounting versatility.
Iron handles are zinc plated for corrosion resistance.
For technical drawings and 3-D models, click on a part number.
Acme Lead Screws and Nuts
Found in hand-powered clamps, vises, grates, doors, and work tables, lead screws and nuts have broad, square threads that are well suited for quick assembly, high clamping forces, and lifting and lowering heavy objects. To ensure compatibility, please select components that have the same thread direction and size.
Cast iron components have good machinability and high strength.
Travel distance per turn, also known as screw lead, is the distance a nut or handle moves with one revolution of the lead screw.
For technical drawings and 3-D models, click on a part number.
Thumb nuts fasten and position lead screw components. Thumb nuts are easy to grip and tighten by hand for quick assembly and disassembly.
Handles fasten and position lead screw components. Handles are easy to grip and tighten by hand for quick assembly and disassembly.
| Thread Size | Ht. | Wd. | No. of Thread Starts | Speed Ratio | Travel Distance per Turn | Thread Fit | Hardness | Each | |
Cast Iron | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| 3/8"-12 | 1 1/8" | 9 1/2" | 1 | 1:1 | 0.083" | Class 2G | Rockwell B72 | 000000000 | 000000 |
| 1/2"-10 | 1 1/8" | 9 1/2" | 1 | 1:1 | 0.1" | Class 2G | Rockwell B72 | 000000000 | 00000 |
| 5/8"-8 | 1 1/8" | 9 1/2" | 1 | 1:1 | 0.125" | Class 2G | Rockwell B72 | 000000000 | 00000 |
| 3/4"-5 | 1 1/8" | 9 1/2" | 1 | 1:1 | 0.2" | Class 2G | Rockwell B72 | 000000000 | 00000 |
| 3/4"-6 | 1 1/8" | 9 1/2" | 1 | 1:1 | 0.167" | Class 2G | Rockwell B72 | 000000000 | 00000 |
| 7/8"-6 | 1 1/8" | 9 1/2" | 1 | 1:1 | 0.167" | Class 2G | Rockwell B72 | 000000000 | 00000 |
| 1"-4 | 1 1/8" | 9 1/2" | 1 | 1:1 | 0.25" | Class 2G | Rockwell B72 | 000000000 | 00000 |
| 1"-5 | 1 1/8" | 9 1/2" | 1 | 1:1 | 0.2" | Class 2G | Rockwell B72 | 000000000 | 00000 |
| 1"-6 | 1 1/8" | 9 1/2" | 1 | 1:1 | 0.167" | Class 2G | Rockwell B72 | 000000000 | 00000 |
| 1 1/4"-4 | 1 1/8" | 9 1/2" | 1 | 1:1 | 0.25" | Class 2G | Rockwell B72 | 000000000 | 00000 |
| 1 1/4"-5 | 1 1/8" | 9 1/2" | 1 | 1:1 | 0.2" | Class 2G | Rockwell B72 | 000000000 | 00000 |
| 1 1/2"-4 | 1 1/8" | 9 1/2" | 1 | 1:1 | 0.25" | Class 2G | Rockwell B72 | 000000000 | 00000 |
Handles fasten and position lead screw components. Handles are easy to grip and tighten by hand for quick assembly and disassembly.
| Thread Size | Ht. | Wd. | No. of Thread Starts | Speed Ratio | Travel Distance per Turn | Thread Fit | Hardness | Each | |
Cast Iron | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| 3/4"-5 | 1 1/8" | 9 1/2" | 1 | 1:1 | 0.2" | Class 2G | Rockwell B72 | 000000000 | 000000 |
| 3/4"-6 | 1 1/8" | 9 1/2" | 1 | 1:1 | 0.167" | Class 2G | Rockwell B72 | 000000000 | 00000 |
| 1"-5 | 1 1/8" | 9 1/2" | 1 | 1:1 | 0.2" | Class 2G | Rockwell B72 | 000000000 | 00000 |
| 1"-6 | 1 1/8" | 9 1/2" | 1 | 1:1 | 0.167" | Class 2G | Rockwell B72 | 000000000 | 00000 |
| 1 1/4"-4 | 1 1/8" | 9 1/2" | 1 | 1:1 | 0.25" | Class 2G | Rockwell B72 | 000000000 | 00000 |
| 1 1/4"-5 | 1 1/8" | 9 1/2" | 1 | 1:1 | 0.2" | Class 2G | Rockwell B72 | 000000000 | 00000 |
| 1 1/2"-4 | 1 1/8" | 9 1/2" | 1 | 1:1 | 0.25" | Class 2G | Rockwell B72 | 000000000 | 00000 |
Handles fasten and position lead screw components. Handles are easy to grip and tighten by hand for quick assembly and disassembly.