Since its founding in 1957, Dover Marine Manufacturing & Supply Co., Inc. has been a trusted name in the marine industry. With a relentless commitment to quality and innovation, Dover Marine has cemented its legacy as a leading manufacturer of industrial marine hardware and equipment. By proudly manufacturing exclusively in the United States, the company ensures precision, durability, and adherence to the highest industry standards.
From ocean-going vessels to military ships, Dover Marine's products are vital to marine operations, trusted worldwide by professionals in the chemical, petroleum, and offshore industries. Let's explore what sets Dover Marine apart and take a closer look at their range of marine hardware solutions.
Made in the USA Since 1957 
	      For more than 65 years, Dover Marine has upheld its mission of delivering quality American craftsmanship. Unlike many competitors who outsource  manufacturing overseas, Dover Marine’s products are engineered and produced  domestically to ensure superior standards. 
Why “Made in the USA” Matters 
	      Manufacturing in the United States offers a number of benefits, not only  to the marine industry but to its partners and customers as well. 
Dover Marine’s emphasis on American manufacturing exemplifies their dedication to excellence and reliability, keeping businesses running efficiently across the globe.
A Complete Range of Industrial Marine  Hardware 
        Dover Marine specializes in producing a complete line of industrial  marine hardware, hatches, and equipment designed to meet the demanding  needs of marine professionals worldwide. Their versatile products are trusted  in diverse applications across the ocean-going, inland waterway, military,  chemical, and offshore sectors. 
Flagship Products That Define Marine Durability
Dog bolts are an essential component in marine applications, serving as  rugged fasteners for watertight doors, hatches, and other critical equipment.  Dover Marine’s dog bolts are manufactured with resilience in mind, offering enhanced  rust resistance and durability under extreme conditions. 
          These robust fasteners ensure that watertight integrity is maintained no  matter the environmental pressures, making them indispensable for safety and  operational efficiency. 
Preventing water intrusion is key to any safe marine operation. Dover  Marine’s scupper plugs are crafted with precision, providing airtight seals on  vessel drains. Built to withstand harsh weather, chemical exposure, and  saltwater, these plugs deliver unmatched reliability. 
          Whether you're securing a military vessel or managing an offshore rig,  Dover Marine ensures protection against potential flooding and water damage. 
When it comes to marine-grade hardware, door dog handles by Dover  Marine are designed for both ease of use and robust performance. Ideal for  watertight doors and hatch covers, these handles feature ergonomic designs for  effortless operation while maintaining the highest safety standards. 
          Built to withstand years of usage in the toughest conditions, Dover’s  door dog handles are a vital part of maintaining onboard safety and access. 
Industries Served 
          What truly sets Dover Marine apart is its ability to serve a broad  spectrum of industries with diverse needs. Some primary industries that rely on  Dover Marine hardware include: 
Why Professionals Trust Dover Marine 
          Marine industry professionals and supply chain managers often face  challenges that demand uncompromising quality and reliability in their  equipment. Here’s why they continue to trust Dover Marine Manufacturing &  Supply Co., Inc.: 
With decades of experience, Dover Marine employs skilled professionals who understand the complexities of the marine industry better than anyone. Their expertise ensures perfect execution from design to delivery, no matter the scale of the order.
Need a specialized product tailored to unique specifications? Dover Marine collaborates closely with customers to craft customized hardware solutions that perfectly match their needs.
While their production remains proudly U.S.-based, Dover Marine supplies products to clients worldwide. With a secure and responsive supply chain, the company continues to support businesses navigating global operations.
By limiting excessive outsourcing and prioritizing high-quality, long-lasting materials, Dover Marine is committed to reducing waste and fostering environmentally conscious practices.
Join A Legacy of Excellence 
          For over six decades, Dover Marine Manufacturing & Supply Co., Inc.  has stood as a beacon of American manufacturing excellence. Their commitment to  providing reliable, durable marine hardware has made them an industry leader,  from local waterways to global enterprises. 
          Are you ready to experience the precision, reliability, and dedication  that Dover Marine delivers? Explore their extensive catalog or contact their  team to discuss how they can meet your hardware needs. 
Together, Dover Marine and its partners ensure that vessels and operations worldwide—whether inland or at sea—are equipped for success.
Our comprehensive standard product line is available from stock and ready for same-day shipment.
We also offer customized fabrication of other non-stock products with attention to rapid turn around.