Universal Thread Grinding Company, located in Fairfield, CT, USA, offers high quality lead screw assemblies for precision, linear positioning applications.

Universal Thread was founded in 1946 to meet the needs of regional manufacturers by providing a wide range of customized thread grinding services. Development of expertise in manufacturing precision lead threads guided the evolution of our current product lines of precision lead screw and nut assemblies. For over 25 years the Universal lead screw assembly has been used worldwide, meeting the most demanding requirements.

Our precision lead screws eliminate many unwanted side effects common to less exacting products. See our application note on banding.

Building the best lead screw assembly is Universal Thread’s only mission. Whether you specify a standard product from our extensive stock, or require a customized product, you will get the full attention of our experienced staff.

Call us to discuss your specific requirements. Our specification check list can help you order a customized lead screw assembly to meet your applications.

Our Connecticut plant is fully stocked and ready to respond to your most immediate needs. We offer our years of experience, attention to detail, personal service, and on time delivery.

Universal's high quality lead screw assemblies meet your most demanding micro positioning applications. Specify lead accuracies of 10 microinches per turn and 25 microinches per inch, the best in the industry!
      Unmatched lead accuracies minimize thread helix nonlinearity, and eliminate the "once around" banding problems common in high performance graphic imaging equipment, including color scanners, recorders, and printers. Other application examples include wire bonders, disk drive testers, and linear slide systems.

Accuracy:

Standard: 0.000050"/turn, 0.000100"/inch
Available: 0.000010"/turn, 0.000025"/inch

Stock Sizes:

1/4" diameter, travel to 8"
1/2" diameter, travel to 24"
3/4" diameter, travel to 31"

Standard Leads:

Commonly used leads from 0.025" to 0.400", 1 mm to 5 mm.

Standard units are stocked for immediate shipment.

Universal lead screws, with many built-in features, offer designers distinct advantages compared to ball bearing screws and conventional lead screws.

MAJOR FEATURES INCLUDE:

Smoothness of operation
No noise
Absolute and repeatable positioning accuracy over a distance
Self-aligning nut eliminates side loading of linear bearings and prevents nut binding or positioning error due to misalignment in lead screw installation.
Self-compensation for pitch diameter variation extends life expectancy without performance degradation.
Minimum helical nonlinearity within a revolution (drunkenness). Important for equal step size or constant velocity applications.
Anti-backlash nut design for bidirectional repeatability.