Contact Us

  • phone: 586.757.1280
  • fax: 586.757.1051


Warren Screw Products, Inc. is a manufacturer of Close-Tolerance Turned, Broach, Machined and Assembled Metal Components. Since 1957, we have been machining customer designed components for all major manufacturing industries, Automotive, Appliance, Commercial, Heavy Truck, Agriculture and Military.

As a Third Generation, Family Owned and Operated business, the Kaspari Family continues to support customers with the highest level of Customer Support, through Engineering Assistance, Prototype thru Production Manufacturing Services, Product Quality Support at all levels and most of all, Quality Products, supplied at a Fair Price, always delivered on time.

Our processes:

  • Rotary transfer machining
  • Hydromat machining
  • Multi-spindle screw machining & chucking
  • Single spindle Swiss turning & chucking
  • CNC turning
  • CNC chucking
  • CNC machining
  • Broaching ID & OD
  • Secondary machining
  • Multi-component assemblies
  • Laser inspection / high speed

Our operations:

In January of 2009, Warren Screw Products, Inc. opened a 146,000 Sq. Ft. manufacturing facility, expanding all areas of our operations. The additional manufacturing space has allowed us to:

  • Improve our process flow in all areas.
  • Increase the size and capacity of our manufacturing equipment in all Departments.
  • Expand our In-House tooling manufacturing operations to support customer machining projects.
  • Create a Tool Prototype Area for tool, fixture and machine testing prior to use in production application.

Technical Capabilities:

  • In-House Tool Design, Build and Refurbishing Capabilities
    • EDM Capabilities
    • Staff Tool/Machine Design Engineers
    • Complete Tool Room & Tool Making Staff
    • Fully Equipped Tool, Fixture & Machine Building Operations. Environmentally Controlled
  • Engineering Support Capabilities for Customer Design and Engineering Requirements
  • CAD Interface:
    • Master CAM
    • Catia
    • Iges
    • AutoCAD
  • Prototype Support and Manufacturing
    • In-House Prototype Department/Area
    • Rapid Turn-Around
    • Low Cost
    • Machining Surfaces & Sizes similar to Production Intent
  • In-House Gauge, Fixture and Machine Building Capabilities

Our Customers:


  • Automotive
  • Commercial Heavy Truck
  • Agriculture
  • Military
  • Marine
  • Lawn & Garden