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US Military Depends on Screw-to-Connect Couplings to Perform Under Pressure military Vehicle Quick Coupling DivisionWhen working under high pressure in the harshest conditions, there is no margin for error. Especially if you’re in the military. Since World War I, the U.S. military has trusted Parker to deliver the toughest and most dependable products capable of standing up to high pressure applications and challenging environments. Our products are designed to deliver peak performance at the most crucial times to ensure that failure is not an option.

Parker’s Defense Team is dedicated to supporting ground and maritime applications worldwide. The team includes some of the industry’s sharpest engineering minds collaborating with military leaders to understand their challenges in a variety of applications and environments and offer innovative solutions.

We leverage our experience and knowledge in demanding applications like construction, mining and oil and gas to develop products that meet the requirements for military ground vehicles. This includes the military environment where extreme and challenging conditions are common. We work with defense personnel on applications where screw-to-connect couplings increase reliability and uptime for military hydraulic systems used on armed forces’ ground vehicles.

Military applications

Our screw-to-connect couplings are engineered to keep military equipment ready for action. Through research and development, we have helped redefine the limits of tactical vehicles and ground-based system performance.    

From the desert to the arctic, military vehicles must operate reliably in extreme conditions like rough terrain, dirty or dusty environments or high-vibration applications.

US Military Depends on Screw-to-Connect Couplings to Perform Under Pressure Military Vehicle Quick Coupling DivisionParker’s screw-to-connect couplings check all the boxes.

Our engineers design and qualify couplings with military ground vehicles’ hydraulic systems in mind and deliver connectors that are robust, highly corrosion-resistant, and operational in high-impulse systems. All that while also being easy to connect and disconnect under high pressure and able to remain secure in high-vibration situations.

Our line of screw-to-connect couplings enables mechanics and techs the ability to perform ground vehicle maintenance tasks like installing the couplings directly on the pump, at the base or in the field without concern about causing damage or sustaining an injury when disconnecting or connecting under-pressure components.

  Parker’s screw-to-connect coupling options for military vehicles

We offer two primary coupling series that meet these application requirements – FET and 59 Series. While they each have their own individual features and benefits, they do share some application commonalities.

Both the FET or 59 series products for military hydraulic systems can be secured and disconnected by hand – no tools are required. Both product lines feature a visual indicator so the mechanic or technician can confidently know the connection is secure.

Both series of couplers can operate in heavy-duty, hydraulic applications where fluid lines require fast and easy connection and disconnection. Other common features include:

  • Connect and disconnect under pressure
  • High impulse resistance
  • Up to 6000 psi rated pressure
  • Non-spill valving

US Military Depends on Screw-to-Connect Couplings to Perform Under Pressure Screw to Connect fittings Quick Coupling DivisionThe FET Series is an excellent choice for military ground vehicle applications and directly interchange with other-like industry products. FET series couplings are produced with Parker’s same high standards of design, engineering and manufacturing.

Our innovative 59 Series is the top-of-the line coupling designed for military hydraulic systems. 59 Series products feature materials, design and functionality that are unique. The couplings are zinc-nickel coated for superior corrosion resistance. They are engineered with double Acme threading, which enables quick, strong and reliable connection in just 2.5 turns. These rugged Acme threads are resistant to damage and have a double-start feature to quickly align the threads, saving time and eliminating frustration.

The bright orange O-ring provides visual confirmation that the coupler and nipple are fully mated for a secure connection. The 59 Series also features an internal bearing to reduce hose twist and ease the difficulty of connecting fluid lines while under pressure.


Learn more about Parker’s FET and 59 Series screw-to-connect couplings.


US Military Depends on Screw-to-Connect Couplings to Perform Under Pressure Abbey Hopkins Quick Coupling DivisionArticle contributed by Abbey Hopkins, product sales manager, Quick Coupling Division, Parker Hannifin

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Elevating Flight With Decades-Strong Aerial Refueling Solutions- Aerial Refueling - Parker AerospaceWith an increased focus on strengthening United States military capabilities for the 21st century, Parker Aerospace takes pride in having a long history supporting the country’s defense endeavors around the world with flight-critical components. One of Parker’s most essential product lines for military aircraft is its aerial refueling equipment.  

In-flight refueling couplers, nozzles, receptacles, and test kits from Parker Aerospace’s Fluid Systems Division represent today’s leading edge in design, performance, and durability. 

Elevating Flight With Decades-Strong Aerial Refueling Solutions - Receptacle Stacks - Parker AerospaceThe division produces two standard systems for aerial refueling: 

  • Boom nozzle and receptacle system

  • Probe-and-drogue system

The boom nozzle and receptacle are the interface traditionally adapted for Air Force applications including strike aircraft, tankers and transports, while the probe-and-drogue are traditionally adapted for Navy/Marine strike aircraft and military trainers.


Staying on target non-stop

Elevating Flight with Decades Strong Aerial Refueling SolutionsAerial refueling is the process by which an aircraft is loaded with fuel mid-air while still in flight. The crucial operation allows military craft to fly prolonged maneuvers and reconnaissance missions. In some cases, our inflight refueling equipment has been incorporated into platforms derived from commercial aircraft. One noteworthy example is the Boeing 747-200 used for Air Force One.


Elevating Flight With Decades-Strong Aerial Refueling Solutions - C5 large transport refueling - Parker AerspaceParker’s development of in-flight refueling equipment began more than 55 years ago with Lockheed Martin’s reconnaissance aircraft, the SR71 Blackbird (1964). Parker designed the aerial refueling receptacle for this historic aircraft. After advancing early variants of a universal aerial refueling receptacle slipway installation (UARRSI) for the development of the Rockwell B-1 Lancer and the Fairchild A-10 Thunderbolt, Parker’s expertise was again put to use on the refueling receptacle for another U.S. fighter jet.  In those early days of evolving aerial refueling solutions, Parker augmented its knowledge base through the strategic acquisition of Schultz Tool and Manufacturing in 1971 a company that had designed receptacles for the F-111 Aardvark, the C-5 Galaxy, and the A-7 Corsair II.  

In 1997, Parker again advanced its air-to-air offerings and necessary ground test equipment by acquiring the aerial refueling product line from XAR Industries in California. The company had previously provided aerial refueling product designs for Lockheed Martin’s F-16, F-117, and F-22 as well as Universal Aerial Refueling Receptacle (UARRSI) variants.

Building on the technologies and applications from Parker, Shultz and XAR, our teams developed a unique receptacle and slipway assembly for the B-2 program. Since this time, Parker has subsequently designed multiple derivatives of the UARRSI and application-specific receptacles for several programs including the F-22 and F-35 programs.


Utah Air National Guard members from the 191st Air Refueling Squadron execute an air refueling mission from a KC-135 Stratotanker. A B-2 Spirit from the 509th Bomb Wing at Whiteman AFB, Missouri participated during this training mission. Video by Staff Sgt. Erin Mills.


The multi-purpose UARRSI convenience and adaptability

Elevating Flight With Decades-Strong Aerial Refueling Solutions - universal aerial refueling receptacle - Parker AerospaceIn 1976, Parker introduced an improved universal aerial refueling receptacle slipway installation (UARRSI) which has proven to be Parker’s most versatile piece of aerial refueling equipment. UARRSI adapts to aircraft that require a nozzle and receptacle-type apparatus. The unit features a lighted slipway and voice command functionality to facilitate the fuel transferring process. UARRSIs are used on military aircraft including the Boeing C-17, McDonnell Douglas KC-10, the Airbus A330 MRTT, and the Boeing GTTA, P-8A, and the 737 AEW&C E-7 Wedgetail. 

Testing equipment within critical industry standards

Elevating Flight With Decades-Strong Aerial Refueling Solutions - Aerial refueling testers - Parker AerospaceParker’s aerial refueling ground test kits are used to evaluate at the aircraft or component levels, along with the voice inter-communication capability. This testing function allows engineers to assess specific status modes (connect and disconnect), as well as alignment and engagement states of the equipment. Parker’s product line conforms to original equipment manufacturing (OEM) specifications, U.S. military standards, and additional requirements developed by the Aerial Refueling Systems Advisory Group (ARSAG) and other like agencies. 


Supporting the next generation of aerial refueling

Elevating Flight With Decades-Strong Aerial Refueling Solutions - next gen aerial refueling - Parker AerospaceThe future of in-flight refueling technology is now taking off in innovative directions, with a renewed emphasis on safety and efficiency. Aerial refueling for helicopters and unmanned aerial vehicles (UAVs) is also an active field of development. As the technology evolves, customers may see updated offerings from Parker based on our extensive pedigree, and our always-advancing capabilities. 


To learn more about the capabilities of Parker's Fluid Systems Division, please visit our website

This blog was contributed by the engineering team from the Fluid Systems Division of Parker Aerospace.


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What Everybody Ought To Know About ParkerStore - ParkerStore Exterior - ParkerStoreA ParkerStore is many things to many people. To put it simply, it’s your go-to local source for system solutions, complete hydraulic services and expert advice on a wide range of quality Parker components and applications.

Right around the corner and all around the world, over 3,700 independently owned Industrial Retail™ locations are ready to help you. Your local store's knowledgeable staff has one goal: to improve your productivity and profitability by providing everything you need for your motion and control related applications in one place. 

Our retail experience

You will find your local ParkerStore is designed with retail aisles, making it easy to find and select products. Products are stocked in easy-to-access bins, so you can readily pick them up and compare them. Related products are grouped together, and market-specific or seasonal products are highlighted to make them easy to identify and evaluate. Fabrication workshops, most visible, allow you to watch your custom hose and/or tube being cut, crimped, cleaned and assembled. And, while you're waiting, enjoy a beverage and/or snacks at the hospitality station.


What Everybody Ought to Know About ParkerStore - Fittings - ParkerStoreYour local ParkerStore provides a complete line of Parker hydraulic and pneumatic inventory including hydraulic hose, hydraulic fittings, air hose, chemical hose, water hose, tube fittings, stainless fittings, brass fittings, metric fittings, thermoplastic tubing, thermoplastic couplings, hydraulic filters, air filter regulator and lubricator products and more. Hose assemblies are custom made to your exact specifications and can be made quickly when you’re experiencing system and labor downtime.


Beyond reliable products; each location is operated by a distributor with a commitment to your local area. Knowledgeable associates can answer all your questions, provide tailored advice and 24-hour field services. Services include, but are not limited to:

What Everybody Ought to Know About ParkerStore - HD Van- ParkerStoreParkerStore HOSE DOCTOR®

Some locations offer the ParkerStore HOSE DOCTOR service. A technician will come to you for onsite maintenance or emergency services. Each vehicle is equipped with the Parker components and tools needed to provide a hose replacement, troubleshoot a system issue and even perform preventative maintenance. Find out more.

Fluid Analysis and Condition Monitoring Services

Dedicated to the overall health of your fluid systems, your local ParkerStore offers innovative services that cover system diagnostic, therapeutic and preventive needs. These comprehensive services will improve operational efficiency, productivity, and reliability. Read more about how an ounce of prevention could save you thousands.

Parker Tracking System (PTS) What Everybody Out to Know About ParkerStore - PTS Hose - ParkerStore

Designed to ensure efficient and accurate repairs, your local ParkerStore offers you PTS.  A Web-based application, PTS generates a unique identification code for each hose assembly which is printed on a durable barcode or RFID label. Fast and accurate product identification speeds up replacement regardless of where the original assembly was made.  The hose assembly can be replaced with only the PTS ID number, eliminating the need to remove hoses prior to replacement - this can provide critical machine uptime and enable a more conveniently scheduled repair. 

ParkerStore Rental Program

Through the ParkerStore Rental Program, you can utilize specialty tools and equipment without having to buy them. It’s perfect for those tools or equipment you only use occasionally, can’t afford to purchase right away or just want to try before you make a significant investment. 

Rental equipment includes (varies by ParkerStore):

  • Hydraulic hose crimpers

  • Tube fabrication equipment (benders, cut-off saws, tube flanging & flaring machines

  • Filtration equipment

  • Diagnostic equipment

Designed to make renting equipment easy; a ParkerStore representative will help you identify the best equipment for your job and provide the training necessary to use it.

Loyalty program What Everybody Ought to Know About ParkerStore - RewardsPlus - ParkerStore

And if all that wasn’t enough, you can get rewarded for visiting/shopping with the Rewards Plus loyalty program, available at participating ParkerStores across the United States. It’s easy to get started, plus it’s simple: no purchase necessary, the more you visit, the more punches you get, the more rewards available.  Visit your local ParkerStore and ask to join their Rewards Plus Loyalty program today.


Want to learn more? Check out the video below, visit or use our locator to find your nearest ParkerStore.


Blog logoPost contributed by: MRO Authority - ParkerStore Team, Parker Hannifin






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