Material Material |
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Nut Type Nut Type |
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![]() | Threadless |
Component Component |
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![]() | Nut |
Bearing Type Bearing Type |
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![]() | Ball |
Maximum Thrust Capacity Before Slip Maximum ThrustCapacity Before Slip |
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Lubrication Lubrication |
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Construction Construction |
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Number of Bearings Number of Bearings |
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Mounting Hole Center-to-Center Length Mounting Hole Center-to-Center Length |
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Minimum Temperature Minimum Temperature |
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Maximum Temperature Maximum Temperature |
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RoHS (Restriction of Hazardous Substances) RoHS (Restriction ofHazardous Substances) |
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Selecting Compatible Lead Screws and Nuts
More
Threadless Lead Screw Nuts

Shown with Rotary Shaft (Not Included)
Install these nuts on a rotary shaft to create a linear positioning system without a lead screw. Instead of threads, a set of angled ball bearings drives the nut along a shaft as it spins. Nuts move towards you when the shaft rotates clockwise and away from you when the shaft rotates counterclockwise. To prevent overload damage, these nuts can be adjusted to slip and stop travelling at a given thrust load. Thrust loads are loads that are applied parallel to the shaft. Bearings are permanently lubricated to save maintenance time and effort.
Travel distance per turn is the distance the nut moves with one revolution of the shaft.
For technical drawings and 3-D models, click on a part number.
Inch

Overall | Mounting Hole | ||||||||||||
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For Shaft Dia. | Travel Distance per Turn | Max. Thrust Cap. Before Slip, lbs. | Lg. | Wd. | Ht. | Ctr. Ht. | Ctr.-to-Ctr. Lg. | Thread Size | No. of | Construction | Temperature Range, °F | Each | |
Aluminum | |||||||||||||
3/8" | 0.03" | 15 | 2 1/4" | 1 1/8" | 1 21/32" | 37/64" | 3/4" | 6-32 | 2 | Two Piece | -10° to 180° | 0000000 | 0000000 |
3/8" | 0.1" | 30 | 2 13/16" | 1 1/2" | 1 29/32" | 49/64" | 1" | 10-32 | 2 | Two Piece | -10° to 180° | 0000000 | 000000 |
1/2" | 0.2" | 60 | 3 27/64" | 2" | 2 11/16" | 1 1/64" | 1 1/4" | 1/4"-20 | 2 | Two Piece | -10° to 180° | 0000000 | 000000 |
1/2" | 0.5" | 60 | 3 27/64" | 2" | 2 11/16" | 1 1/64" | 1 1/4" | 1/4"-20 | 2 | Two Piece | -10° to 180° | 0000000 | 000000 |
3/4" | 0.75" | 60 | 3 27/64" | 2" | 2 11/16" | 1 1/64" | 1 1/4" | 1/4"-20 | 2 | Two Piece | -10° to 180° | 0000000 | 000000 |
Metric

Overall | Mounting Hole | ||||||||||||||
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For Shaft Dia., mm | Travel Distance per Turn, mm | Max. Thrust Cap. Before Slip, lbs. | Lg., mm | Wd., mm | Ht., mm | Ctr. Ht., mm | Ctr.-to-Ctr. Lg., mm | Ctr.-to-Ctr. Wd., mm | Thread Size | Thread Pitch, mm | No. of | Construction | Temperature Range, °F | Each | |
Aluminum | |||||||||||||||
6 | 6 | 5 | 36 | 20 | 28 | 10 | 10 | __ | M3 | 0.5 | 2 | Two Piece | 0° to 230° | 0000000 | 0000000 |
8 | 8 | 16 | 56 | 28 | 40 | 14 | 18 | __ | M4 | 0.7 | 2 | Two Piece | 0° to 230° | 0000000 | 000000 |
10 | 10 | 26 | 62 | 36 | 51 | 18 | 20 | __ | M4 | 0.7 | 2 | Two Piece | 0° to 230° | 0000000 | 000000 |
12 | 12 | 33 | 72 | 40 | 54 | 20 | 25 | __ | M5 | 0.8 | 2 | Two Piece | 0° to 230° | 0000000 | 000000 |
20 | 20 | 59 | 97 | 60 | 71 | 30 | 50 | 40 | M6 | 1 | 4 | Two Piece | 0° to 230° | 0000000 | 000000 |