Aeroquip FCM3685 Allen Head Pipe Plug

Aeroquip

<h3>About Aeroquip</h3><p><strong>Aeroquip</strong> is one of the most storied names in fluid conveyance and high-performance hose-and-fitting technology. Founded in 1940 in Jackson, Michigan by aeronautical engineer Peter F. Hurst, the company was built on two patented innovations: detachable reusable hose fittings and self-sealing couplings, both designed for the aviation industry. During World War II, Aeroquip products became military standards on U.S. aircraft, establishing a legacy of quality and reliability that the brand carries to this day.</p><p>Over the decades, Aeroquip expanded far beyond its aviation roots. Today, as part of Eaton Corporation&apos;s portfolio, the Aeroquip name is synonymous with engineered fluid system solutions spanning automotive, off-highway, industrial, marine, aerospace, and defense applications. Whether the task calls for handling fuel under sustained pressure, routing brake fluid with zero tolerance for failure, or ensuring a clean and spill-free oil change, Aeroquip has purpose-built products engineered for the job.</p><h3>What Makes Aeroquip Stand Out</h3><p>Aeroquip&apos;s reputation is grounded in engineering discipline. Their hoses and fittings are built to meet or exceed demanding SAE and military specifications, with designs optimized for pressure integrity, temperature resistance, and long service life. The brand&apos;s iconic <strong>AQP&reg; Racing Hose</strong> line — featuring a stainless steel outer cover and smooth-bore inner tube — is a benchmark in the performance automotive world, rated for a wide temperature range and approved with both reusable and crimp fittings. Alongside it, the AQP&reg; Socketless line offers a lighter-weight option favored by builders who need easy installation without sacrificing durability.</p><p>For high-performance and racing builds, few brands cover as many fluid system needs as Aeroquip. Their <a href="/21-aeroquip-fuel-hose-fitting-17252">fuel hose fittings</a> and <a href="/21-aeroquip-fuel-hose-6352">fuel hose</a> are go-to choices for builders routing methanol, nitromethane, or gasoline fuel systems, while their <a href="/21-aeroquip-brake-hydraulic-hose-fitting-12217">brake hydraulic hose fittings</a> bring the same proven engineering to safety-critical braking circuits. Even routine maintenance gets the Aeroquip treatment — their <a href="/21-aeroquip-engine-oil-drain-plug-assembly-12886">engine oil drain plug assemblies</a> are quick-drain coupling systems that eliminate spills and speed up oil changes for street cars, hot rods, and race vehicles alike.</p><h3>A Legacy Built on Precision</h3><p>Aeroquip&apos;s markets have historically included automotive OEM and aftermarket, commercial and military aircraft, off-highway equipment, marine, and industrial machinery — a breadth that speaks to the versatility of their fluid system engineering. Their <a href="/21-aeroquip-thread-checker-17462">thread checker</a> tooling reflects that same attention to detail, helping technicians verify thread integrity before assembly to ensure every connection is made correctly the first time.</p><p>With manufacturing facilities positioned globally and decades of innovation behind every product, Aeroquip remains a trusted choice for anyone who demands precision and reliability from their fluid system components.</p>