Skip to Content

Acme and Lead Screw Products

Precision Acme and Lead Screws

Nook manufactures precision acme and lead screws by thread rolling, thread milling, or thread grinding processes. Each process produces high precision screws with centralized thread forms for smooth, no-wedging performance. 

We offer the largest selection of rolled acme screw sizes in the industry. Rolled Thread Screws are stocked for quick delivery.

  • No noise because there are no rolling components
  • Ideal for vertical and light load applications
  • Preloaded nut assembly reduces or completely eliminates backlash (wide application scope)
  • Safe to operate when the unit has a static load to hold
  • Self-locking - no need to apply brakes, even in situations of power outage
  • Low cost

Precision Acme (Inch)

Nook Industries manufactures precision acme and lead screws by thread rolling, thread milling, or thread grinding processes. Each process produces high precision screws. The screw systems feature centralizing thread forms for smooth, no-wedging performance.

Nook offers the largest selection of rolled acme screw sizes in the industry. Rolled thread screws are cost effective and are stocked for quick delivery.

Inch Acme Nut

Bronze: Special high tensile bronze for anti-wedging smoothness. 

  • Material: Nook Bronze
  • Tensile Yield: 50,000 psi
  • Tensile Ultimate: 65,000 psi
  • Hardness: HB75
  • Dynamic co-efficient of friction: 0.125 with Nook Lubricant

Plastic: High strength and inherent lubricity can result in extended product life.

  • Tensile Strength @70°F: 8,000 psi
  • Compressive Strength @70°F: 16,000 psi
  • PV Limit: 2,700 lubricated
  • Co-efficient of friction: 0.10 lubricated

Rolled Inch Acme Screw

PowerAc™ inch acme screws and nuts include a centralizing (C) thread form to prevent wedging and binding. When compared to general-purpose thread forms (G), centralizing threads are manufactured with tighter tolerances and reduced clearance on the major diameter.

  • Lead accuracy of ±.0003"/"

Inch Acme Screw Assembly

Nook acme screw and nut assemblies provide ease of application, as all that is required is installation while offering turn key solutions that only require a power source (hand operation or motor).

Rolled Inch Twin-Lead Acme Screw

  • Dual opposing motion using a single drive system. One-piece high performance acme screws are made from high alloy steel that is black oxided for protection.
  • Lead accuracy of ±.0003"/"

 

Inch Twin-Lead Acme Screw Assembly

Dual opposing motion using a single drive system. One-piece high performance acme screws are made from high alloy steel that is black oxided for protection and can be assembled with Nook PowerAc™ acme nuts, flanges and EZZE-MOUNT™ bearing supports to form cost effective systems. 

Precision Acme (Metric)

Trapezoidal Lead Nut

Bronze: Special high tensile bronze for anti-wedging smoothness. 

  • Material: Nook Bronze
  • Tensile Yield: 50,000 psi
  • Tensile Ultimate: 65,000 psi
  • Hardness: HB75
  • Dynamic co-efficient of friction: 0.125 with Nook Lubricant

Plastic: High strength and inherent lubricity can result in extended product life.

  • Tensile Strength @70°F: 8,000 psi
  • Compressive Strength @70°F: 16,000 psi
  • PV Limit: 2,700 lubricated
  • Co-efficient of friction: 0.10 lubricated

Trapezoidal Lead Screw

PowerAc™ Trapezoidal acme screws and nuts include a centralizing (C) thread form to prevent wedging and binding. When compared to general-purpose thread forms (G), centralizing threads are manufactured with tighter tolerances and reduced clearance on the major diameter.

  • Lead accuracy of 100µm / 300mm

Trapezoidal Lead Screw Assembly

Nook assemblies offer turn key solutions that only require a power source (hand operation or motor). All of the elements are available for quick delivery from shelf stock. Component and assembly drawings are available from CAD drawings that can be configured online.