Thread & Bore Masking
Protect threaded holes, bores, and tapped features from powder buildup using precision-fit silicone plugs and high-temperature masking materials, preserving dimensional accuracy and fit.
Achieve flawless powder coat finishes with DM&E's precision masking solutions. Our in-house paint shop protects threads, bores, mating surfaces, and critical dimensions from unwanted coating—ensuring every part meets exact specifications. From aerospace-grade components to custom fabricated assemblies, we deliver masking expertise that protects performance, appearance, and dimensional integrity.

Comprehensive masking and powder coating solutions to protect critical surfaces and deliver precision finishes on every part.
Protect threaded holes, bores, and tapped features from powder buildup using precision-fit silicone plugs and high-temperature masking materials, preserving dimensional accuracy and fit.
Mask mating surfaces, bearing seats, and critical edges with professional-grade tape and custom die-cut masks that shield high-tolerance areas from unwanted coating overspray.
Apply durable epoxy, polyester, nylon, and polyurethane thermoset powder finishes with superior corrosion, UV, and abrasion resistance—executed in our fully equipped in-house paint shop.
Prepare metal surfaces using silica sand, steel shot, and bead blasting to remove scale, rust, and contaminants—ensuring optimal coating adhesion and long-lasting finish performance.
Provide full powder coating and selective masking for fabricated assemblies and complex weldments, maintaining component functionality while delivering a professional, uniform finish.
Work one-on-one with our team to plan the right masking strategy and powder finish selection for your specific part geometry, material, and end-use application requirements.

Our team reviews your component drawings or samples to identify all critical surfaces, threads, mating faces, and toleranced features that require masking before any coating is applied.
See how DM&E's precision masking solutions have delivered exact results for demanding industrial clients.
DM&E combines certified precision manufacturing with an in-house paint shop to deliver masking solutions you can depend on.
Our ISO 9001:2015 and AS9100D certifications mean every masking and coating job meets rigorous aerospace and industrial quality standards.
Our dedicated in-house paint shop eliminates outsourcing delays, keeping your coating and masking project under one roof for faster turnaround.
With CNC machining tolerances down to +/-.0005, our team understands critical dimensions—bringing that same precision mindset to every masking application.
From surface prep and masking through coating and final inspection, DM&E manages your entire finishing workflow, reducing purchase orders and transportation costs.
Skilled specialists dedicated to precision finishing and exceeding customer expectations.
Douglas Machine & Engineering (DM&E) is an ISO 9001:2015 and AS9100D certified precision manufacturer serving aerospace, defense, agricultural, robotics, and industrial sectors. With an unwavering commitment to quality, communication, and on-time delivery, DM&E operates as a true one-stop shop—handling everything from concept and design engineering through CNC machining, welding, heat treat, plating, and in-house powder coating with precision masking. Our recent expansion with a new CNC production shop reflects a deep, ongoing investment in capability and capacity. Holding a CAGE Code (87BF4) and employing AWS certified welders, DM&E is built to handle the most demanding manufacturing and finishing requirements. We pride ourselves on an open-door policy, transparent project management, and a skilled workforce dedicated to delivering finished products that perform exactly as specified—every time.
Yes, masking is an essential part of professional powder coating. High-temperature silicone plugs, caps, and masking tape are applied to threads, bores, mating surfaces, and other critical areas before coating to keep them free of powder. At DM&E, precision masking is performed by trained technicians who review component drawings to identify every area requiring protection before the coating process begins.
Talk to our finishing specialists for expert guidance and a free project consultation.
International quality management certification for precision manufacturing excellence.
Aerospace quality management certification demonstrating compliance with demanding industry standards.
American Welding Society certification validating our team's highest-level welding proficiency.
Fill out the form below with your part details, masking requirements, and finish specifications. Our team will review your project and respond promptly with expert guidance and a detailed quote.
For immediate assistance, feel free to give us a direct call at +1 563-324-0611 You can also send us a quick email at lschaul@doug-machine.com
For immediate assistance, feel free to give us a direct call at +1 563-324-0611 You can also send us a quick email at lschaul@doug-machine.com