Standard screws for the aerospace industry require a high level of quality and reliability. At ADIFOR Aero, we supply a wide range of screws that comply with aerospace standards, guaranteeing the safety and performance of your equipment.

Standards and Certifications

Screws used in the aerospace sector must meet rigorous international standards to ensure their suitability for extreme flight conditions. Among the most common standards are:

AS/EN 9100: covers the entire supply chain, including the design, manufacture, and maintenance of aeronautical equipment

EN 9120: specific to aerospace stockists and distributors, ensures a suitable quality management system

Materials and Surface Treatments

Materials used include special steels such as 35NC6, 30NCD16 and XC38, and stainless steel such as Z2CN18-10 and 316L. Advanced materials are also used, such as TA6V titanium and NC19FeNb inconel.

Surface treatments also play a vital role in durability and corrosion resistance. Treatments such as cadmium plating, silver plating and passivation are commonly applied to meet specific conditions of use.

Safety and Reliability

Screws must not only be made from high-quality materials, but also comply with precise dimensional tolerances, in accordance with European or American metric standards.

Need technical advice, the right commercial offer, or the perfect product at the best price? The ADIFOR Aero team is here to support you every step of the way!

Hex head screws

  • Flaskless, undrilled: NFL 22 208, EN2887, EN2938
  • Without barrel, drilled: NFL 22 209, EN3112, EN3308
  • With barrel, undrilled: NFL 22 125, EN2859, EN4129, EN3052
  • With barrel, pierced: NFL 22 126, EN2889, EN3820
  • With rectified barrel, unperforated: NFL 22 201
  • With was rectified, pierced: NFL 22 202
  • With barrel and pin hole: NFL 22 129

Hexagon socket head cap screws (CHC)

  • Unshanked, undrilled: NFL 22 225
  • Without barrel, pierced: NFL 22 224
  • With barrel, undrilled: NFL 22 221, L22 223, EN3303
  • With barrel, pierced: NFL 22 220, L22 222

12-tooth screws

  • Studless, undrilled: NFL 22 231, L22 236, EN2870, EN3444
  • Without shank, drilled: NFL 22 232, L22 237, EN2874, EN4136
  • With clear barrel, unperforated: NFL 22 233, L22 238, EN2927, EN2925, EN2926
  • With clear barrel, pierced: NFL 22 234, L22 239, EN3832

Cruciform countersunk head screws

  • With barrel: NFL 22 251, L22 252, L22 257, L22 258
  • Without fut: NFL 22 256, L22 259

Fasteners and screws with machined heads for bar turning.

  • Slotted cylindrical head: NFL 22 293, EN2649, EN2650
  • Slotted countersunk head: NFL 22 291, L22 292, EN2652
  • Slotted oval cylindrical head: NFL 22 294
  • Slotted cylindrical head drilled: NFL 22 296
  • Hollow cylindrical hex head: NFL 22 298

Aeronautical studs

With different thread diameters, left or right-hand pitch, with repair dimensions.

Aeronautical axes

  • Drilled threaded axle: NFL 22 731, EN3740
  • Non-drilled threaded axle: NFL 22 733
  • Light threaded axle: NFL 22 732
  • Smooth axle with pin hole: NFL 22 719, EN2364

Aeronautical nuts

  • Hexagonal nuts: NFL 22 431 to L22 439, NFL 22 441 to L22 443, NFL 22 461, L22 462, EN2852, EN2895
  • Slotted nuts: NFL 22 451, L22 453, L22 455, L22 457

Aeronautical washers

  • Flat washers: NFL 23 111 to L23 119, L23 134, L23 142, EN2914, EN2139
  • Stepped washers: NFL 23 120, NFL 23 121