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System of Measurement
Thread Size
Travel Distance per Turn
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DFARS Specialty Metals
Dynamic Thrust Load Capacity
Export Control Classification Number (ECCN)
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Flange Height
Flange Material
Flange Thickness
Flange Width
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Maximum Temperature
Minimum Temperature
Mounting Hole Center-to-Center
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Number of Mounting Holes
Performance
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U.S.–Mexico–Canada Agreement (USMCA) Qualifying
Ultra-Precision Lead Screws and Nuts
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Style A |
Operating with less backlash (play) than Precision Acme Lead Screws and Nuts, these provide increased nut life and more reliable movement in automated systems. Also known as single-start and self-locking lead screws and nuts, they have a single thread that runs the length of the screw. The nut travels only when the screw turns, so your system won’t unexpectedly move when the lead screw is at rest. All components are corrosion resistant for use in harsh environments. To ensure compatibility, select components that have the same thread type, thread size, and number of thread starts.
Flange Nuts—Right-Hand Thread
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Style A |
Acetal—Acetal nuts have good wear and corrosion resistance.
Travel Distance per Turn—Travel distance per turn, also known as screw lead, is the distance a nut moves with one revolution of the lead screw.
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Style | Thread Size | Lg. | Dia. | Wd. | Ht. | Thk. | Thread Type | Speed Ratio | No. of Thread Starts | Travel Distance per Turn | Mounting Hole Ctr.-to-Ctr. | Hardness | Tensile Strength | Dynamic Thrust Load Cap., lb. | No. of Mounting Holes | Each | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Acetal | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| A | 9/64"-41.7 | 1/2" | 0.406" | 3/4" | 13/32" | 1/8" | Rounded Acme | 1:1 | 1 | 0.024" | 39/64" | Not Rated | Not Rated | 25 | 2 | 6642K21 | 000000 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Acetal with Wear-Compensating Internal O-Ring | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| A | 9/64"-41.7 | 1/2" | 0.406" | 3/4" | 13/32" | 1/8" | Rounded Acme | 1:1 | 1 | 0.024" | 39/64" | Not Rated | Not Rated | 5 | 2 | 6642K31 | 00000 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
