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Acme Screws & Nuts

Key Features & Benefits

Duff-Norton has been manufacturing Acme screws and nuts for actuator products for decades and is now applying those years of experience to bring you an expanded assortment of Acme screws and nuts for your application requirements.


Centralizing class screw and nut assemblies – Excellent lead accuracy. Centralizing Acme Screws have limited clearance at the major diameter of screw and nut
and are used extensively for feed screws. The limited clearance enables a
bearing at the major diameter to maintain alignment of the thread axis
preventing wedging on the flanks and part sagging.


In stock on the most popular sizes.

Broad Assortment

We offer a very broad assortment of acme diameters and leads. Multiple Leads up to 9 inches diameter

System Integration

Duff-Norton can provide you with an entire screw and nut system: mounting components, drive components, controls, and protective coverings.