Extreme Precision Screw Products

Quality parts manufacturing.

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Dedicated to Precision Production and Quality

Commitment to Quality Machining Materials and Precision Parts

Founded in 1943 by Harold Aseltine and his son Howard Aseltine, Extreme Precision Screw Products (EPSP) started out in a small wooden building in the middle of a local junk yard near Davison Road and Dort Highway in Flint, MI. The shop was originally set up with machinery that made firing pins for the 50-caliber machine guns during World War II.

In 1951 EPSP moved to 1838 Remell St. in Flint, Michigan, where it remains today. With additions built to accommodate new machinery and business expansion, the complex has sprawled to over 16,000 square feet.

With its 25-30 employees, Extreme continues to specialize in aerospace components, military industry components, with diversification into medical components, firearm sights & grip screws,
precision tool & gaging, and some custom automotive parts.

Contact us today to produce quality products fitted to your needs.

Quick Guide

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Recent Posts

  • Choosing the Right Materials for Precision Screw Manufacturing in Aerospace
  • Pistol Customization: Elevate Your Firearm to Match Your Style and Needs
  • Ma Deuce, The .50-Cal Machine Gun

Blog Categories

  • Certification
  • Manufacturing
  • Military

Our Companies

  • Extreme Precision Screw Products
  • Manson Reamers
  • Veit Tool & Gage

Quick Links

  • Extreme Insights

Our Location

Our Location

1838 Remell Street | Flint, MI 48503

Contact & Hours

810-744-1980

810-744-1821

Monday - Friday: 6AM - 3PM

What We Believe

“Excellence is never an accident;
it is the result of high intention,
sincere effort, intelligent direction,
skillful execution and the vision
to see obstacles as opportunities.”
~Anonymous
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© 2025 EPSP INC.