25 Most requested aircraft parts

What is your best selling aviation part? How many times have you sold that? Do you sell more washers then rivets? Those are the questions we get on a daily basis. On and on they go. So, we looked up this information, and are providing it to you today.

25 Top aircraft parts
Part warehouse

Here is a list of the top 25 most requested items, it ranges from flat washers to check valves.

National stock number, part description, part number, the web page, quantity, and how many times it’s been requested over the last year.

NSN Description Part Number Web page Qty Times Requested
5305-00-685-2256 Machine Screw NAS603-3 https://aerobasegroup.com/nsn/5305-00-685-2256 3,650 69
5305-00-442-7421 Socket Head Cap Screw NAS1351-4-32P https://aerobasegroup.com/nsn/5305-00-442-7421 2,573 56
4920-00-072-9678 Ba Cylindrical Ways HSP841 https://aerobasegroup.com/nsn/4920-00-072-9678 55 55
5315-00-234-1856 Cotter Pin MS24665-155 https://aerobasegroup.com/nsn/5315-00-234-1856 180 52
1560-00-803-2619 Wing Tip Light Indicator 388734-1 https://aerobasegroup.com/nsn/1560-00-803-2619 1,053 44
5305-00-054-6653 Machine Screw MS35233-29, MS5197-29 https://aerobasegroup.com/nsn/5305-00-054-6653 2,488 43
5310-00-469-1088 Nut A125E66 https://aerobasegroup.com/nsn/5310-00-469-1088 3,709 43
5310-00-167-1724 Flat Washer NAS1149D0563H, AN960D516 https://aerobasegroup.com/nsn/5310-00-167-1724 2,389 43
5305-00-685-2521 Machine Screw NAS623-4-4 https://aerobasegroup.com/nsn/5305-00-685-2521 1,351 41
5330-00-030-0205 Packing Retainer AA2291-10D9 https://aerobasegroup.com/nsn/5330-00-030-0205 185 41
1560-00-523-8555 Aileron Weight Assembly 348644 https://aerobasegroup.com/nsn/1560-00-523-8555 882 41
5325-00-281-4920 Turnlock Fastener Stud W98292-1-140 https://aerobasegroup.com/nsn/5325-00-281-4920 234 40
4730-00-529-3763 Boss Nipple MS21902D8 https://aerobasegroup.com/nsn/4730-00-529-3763 274 40
4710-01-369-4583 Nonmetallic Tubing 375822-6 https://aerobasegroup.com/nsn/4710-01-369-4583 797 40
5310-00-478-1384 Flat Washer LS881-2 https://aerobasegroup.com/nsn/5310-00-478-1384 945 39
5320-01-164-1692 Pin-rivet HL19PB-6-9 https://aerobasegroup.com/nsn/5320-01-164-1692 3,839 39
5310-00-753-4000 Finishing Washer NAS1169-10L https://aerobasegroup.com/nsn/5310-00-753-4000 3,402 39
5310-01-216-2801 Flat Washer MS21299-8, BACW10BN72P https://aerobasegroup.com/nsn/5310-01-216-2801 1,675 38
4820-00-585-6008 Check Valve MS28892-6 https://aerobasegroup.com/nsn/4820-00-585-6008 88 38
5895-01-426-5564 Interference Blanker 1D5740G13 https://aerobasegroup.com/nsn/5895-01-426-5564 37 37
5310-00-762-2916 Plate Self-locking Nut MS21052-3 https://aerobasegroup.com/nsn/5310-00-762-2916 27,517 36
5305-00-282-3286 Machine Screw NAS387-1032-14 https://aerobasegroup.com/nsn/5305-00-282-3286 2,200 36
5340-01-560-1034 Mounting Plate 70070-20692-144 https://aerobasegroup.com/nsn/5340-01-560-1034 240 35
5310-00-771-6827 Flat Washer AN960PD10L, NAS1197-10L https://aerobasegroup.com/nsn/5310-00-771-6827 438 35
3040-00-423-8029 Shouldered Shaft 15341PCA3026 https://aerobasegroup.com/nsn/3040-00-423-8029 233 34

National Stock Numbers make supplying goods easier

National Stock Numbers make supplying goods easier

If you’ve ever purchased anything, you’ve seen a numbers on it that identify the item (a bar code). There is something similar that applies to items that are not used by the general public: National Stock Numbers. This relatively new concept is an important way to identify and obtain important items.

National Stock Numbers are one of the many things to come out of World War Two. With all the complications that were arising from trying to get an item that might be known by a dozen or more names, it was decided that an easier way to obtain these items was needed. That’s when these numbers were created. Legislation was introduced in the early 1950s to put this idea into action.

Aircraft Seat Cushion – NSN 1680-01-100-1746


Blind Rivet – NSN 5320-01-597-4852

5320-01-597-4852 – Rivet Blind

Each National Stock Number is made up of several parts, much like other ID methods, all designed to give more information about the particular item. This includes the country or origin, manufacturer, and product specs/description. While the first two parts of the number can vary from manufacturer to manufacturer—or country to country—the last few numbers are the same for each product. For example, light bulbs will have the last part, or washers, etc. Other items that fall into this category are wire springs, communication equipment, heating components, and much more.

These convenient numbers are used by all Governments and are usually assigned upon the invention of a new part, weapon, or other item that will be used by Federal agencies or Military Services. They are also used to identify items that need to be disposed of in specific ways to ensure the safety of the environment and human health.

These numbers have made certain agencies run in a more efficient manner, while also providing transparency and safety of information. It also flags duplicate items to avoid waste.

An example of how the “US Military Purchases Their Parts”:

Airframe Structural Components
Aircraft Air Conditioning, Heating, And Pressurizing Equipment
Aircraft Ground Servicing Equipment
Aircraft Maintenance And Repair Shop Specialized Equipment
Antennas, Waveguides, And Related Equipment
Bearings, Antifriction, Unmounted
Bearings, Plain, Unmounted
Bushings, Rings, Shims, And Spacers
Cable, Cord, And Wire Assemblies: Communication Equipment
Circuit Breakers
Coil, Flat, Leaf, And Wire Springs
Coils And Transformers
Compressors And Vacuum Pumps
Connectors, Electrical
Converters, Electrical, Nonrotating
Diesel Engines And Components
Digital Maps, Charts And Geodetic Products
Electric Vehicular Lights And Fixtures
Electrical And Electronic Properties Measuring And Testing Instruments
Electrical Control Equipment
Electrical Hardware And Supplies
Electrical Insulators And Insulating Materials
Electronic Assemblies, Boards, Cards, And Associated Hardware
Engine Fuel System Components, Aircraft And Missile Prime Movers
Engine Fuel System Components, Nonaircraft
Fastening Devices
Filters And Networks
Fuses, Arrestors, Absorbers, And Protectors
Gears, Pulleys, Sprockets, And Transmission Chain
Hand Tools, Nonedged, Nonpowered
Hardware, Commercial
Hardware, Weapon System
Hose And Flexible Tubing
Hose, Pipe, Tube, Lubrication, And Railing Fittings
Icing System Components Aircraft Hydraulic, Vacuum, And De
Indoor And Outdoor Electric Lighting Fixtures
Information Technology Input/output And Storage Devices
Jet Engines And Components
Knobs And Pointers
Liquid And Gas Flow, Liquid Level, And Mechanical Motion Measuring Instruments
Lugs, Terminals, And Terminal Strips
Microcircuits, Electronic
Miscellaneous Aircraft Accessories And Components
Miscellaneous Communication Equipment
Miscellaneous Electric Power And Distribution Equipment
Miscellaneous Electrical And Electronic Components
Miscellaneous Power Transmission Equipment
Motors, Electrical
Nails, Machine Keys, And Pins
Nuts And Washers
Oscillators And Piezoelectric Crystals
Packing And Gasket Materials
Pipe, Tube And Rigid Tubing
Power And Hand Pumps
Pressure, Temperature, And Humidity Measuring And Controlling Instruments
Refrigeration And Air Conditioning Components
Relays And Solenoids
Rings O
Semiconductor Devices And Associated Hardware
Torque Converters And Speed Changers
Valves, Nonpowered
Valves, Powered
Vehicular Brake, Steering, Axle, Wheel, And Track Components
Vehicular Cab, Body, And Frame Structural Components
Vehicular Furniture And Accessories
Vehicular Power Transmission Components
Wire And Cable, Electrical

National Stock Number Information provided under the Freedom of Information Act. National Stock Number Info may be required to notify the US Department of State, the US Department of Commerce, or other government entities in instances where ITAR controlled items are being sold or exported. National Stock Number Info does abide by all applicable US export controls laws and regulation and may be called upon by the US Government to provide information on request originating from Banned Countries or Entities as defined by the US Department of Commerce, US Department of State, and Homeland Security.

F-16 Fighting Falcon


The F-16 Fighting Falcon is a single-engine multirole fighter aircraft and it was originally created for the United States Air Force. Initially it was designed as an air superiority day fighter and it has now evolved into a highly successfully all-weather multi purpose aircraft. Production for the Falcon was approved in 1976 and over 4,500 aircrafts were built since then. Originally produced by General Dynamics, the manufacturing rights were given to Lockheed Martin when General Dynamics sold their business. Although they are no longer being purchased by the United States Air Force, improved versions of the Falcon are still being built for export customers.


The Fighting Falcon has several key features that lead to its exceptional service. Some of these features include a side-mounted control stick to allow for better maneuvering, a frameless bubble canopy for better visibility, and the first recorded use of a relaxed static stability flight, which is used to make it a nimble aircraft. Inside of the F-16, there is a M61 Vulcan cannon and eleven locations for mounting weapons and other missing equipment. Along with active duty in the USAF and the Air National Guard, the Fighting Falcon has also been known to serve in the air forces of 25 other countries.

Epoxy Adhesives

epoxy-adhesive Epoxy is a common name for a strong type of adhesive used for sticking things together and covering surfaces, usually two resins that need to be mixed together before use. Epoxy adhesives are the better choice when performing in heat and chemical resistance than other common adhesives. Epoxies have high melting and boiling points, which makes it useful as a solver as well. One may find popular two-part epoxy adhesives for the home, workplace or hobby activities in various stores ranging in a wide selection of properties. There are several properties to these epoxies including slow or fast curing time, waterproof or water-resistant, opaque or clear and flexible or rigid. Although many people believe that all epoxies are waterproof, many of them are not recommended to be underwater for the long-term. The shelf life for unmixed two-part epoxies is long and there are many reports of epoxies sitting idly for decades and still being used successfully. However, the ones more commonly seen in stores have a one to two year shelf life as published by the product specifications. Epoxy adhesives are an important part of the “structural adhesives” or “engineering adhesives” class. These are high performing adhesives that can be seen in the construction of aircrafts, cars, boats, skis and other applications that require high strength bonds. The adhesives can be developed to fit almost any application and can be used on wood, metal, glass and even some plastics. It is better for these types of epoxies to be cured with heat, as they will be more heat and chemical resistant than ones that are cured at room temperature. Two part epoxy coatings were made specifically for heavy duty service and dry quickly to provide a tough, protective coating with great hardness. The two part epoxies are usually used industrial and automotive applications because they are more heat resistant than other paints. One of the cons to the epoxy paints would be their deterioration due to UV exposure.