Precision Manufacturing

We have manufactured high-quality, machined components for the Defense and Commercial Industries since 1962. Our primary goals are to ensure consistent customer satisfaction and to assist clients in reducing the total cost of products.

We are committed to assisting the Department of Defense and the Defense Industry improve efficiencies through our dedication to continuous improvement and implementation of lean techniques in order to provide our products at the lowest possible cost.

Full Service Manufacturing

Blanket Orders

We service blanket orders for a variety of products such as:

  • Custom hand & bench assembly tools
  • Replacement parts
  • Turn-key machining and assembly projects

Core Machining Services

  • 5-Axis Machining Centers
  • Full Wire EDM Capabilities with a .008” Hole Popper
  • High Precision Machining
  • Machine Super Alloys/Exotic Metals to Close Tolerances
  • Short to Medium Run Lengths

Efficient, Precision Machining


Level 1/SubSafe

Critical Safety Items

Nuclear Plant Material

We are a preferred supplier of Nuclear Plant Material, Special Emphasis Program and non-level fittings, valves, flanges, components and assemblies for the US Navy.

  • Assemblies
  • FSC: 4730, 4810 & 4820
  • Machined Parts
  • Pipe Fittings
  • Valves


We manufacture with a wide variety of typical, super alloys, and exotic metals including:

  • Aluminum
  • Aluminum Bronze
  • HY-80
  • HY-100
  • Hastelloy
  • Inconel
  • K-Monel
  • Nickel Copper
  • Stainless and Carbon Steel

Helping You Reduce Total Costs

Production Machining


We maintain an extensive network of approved suppliers to facilitate for special processes, a wide-ranging array of turn-key assemblies and manufacturing projects.

Special Fitting & Components

  • Manufactured from Blueprint
  • Custom Designed

Hand & Bench Tools

  • Manufactured to Your Design
  • Fiber Optic Cleavers
  • Fiber Optic Splicers


Flanges up to 25″ diameter made to your specifications or blueprints


Tooling & Prototype Machining

We are respected for precision-machined tools throughout the world.


We continue to invest in developing innovative machine tools using the most advanced computerized controls and operated by experienced technicians.

 Guill endeavors to be the most cost efficient manufacturer while adhering to a “Continuous Improvement” quality principle.

Our capabilities include:

  • Wire & Sink EDM
  • I.D. & O.D. Grinding
  • Surface Grinding

Download Our Facilities List