M3 Aerotight Locking Nuts - Marine Stainless Steel (A4)


Key Features

  • Thread Size: M3 (3mm)
  • Width A/F Max (J): 5.50mm
  • Nut Thickness (T) [Min]: 1.89mm
  • Material: Marine Stainless Steel (A4)
  • Finish: Natural
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M3 Aerotight Locking Nuts - Marine Stainless Steel (A4) Technical Specification

M3 Aerotight Locking Nuts - Marine Stainless Steel (A4) Drawing
End Diameter (D) [Max]5.25mm
MaterialMarine Stainless Steel (A4)
Nut Thickness (T) [Min]1.89mm
Overall Height (H) [Max]3.52mm
Thread SizeM3 (3mm)
Width A/F Max (J)5.50mm

Product Certifications

Certificate of Conformity Included
Certificate of Conformity Included
RoHS Certified
RoHS Certified
REACH Certified
REACH Certified
Quality Approved

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M3 Aerotight Locking Nuts - Marine Stainless Steel (A4) Description

The M3 Aerotight Locking Nuts - Marine Stainless Steel (A4) has the following features:

  • Marine Stainless Steel (A4) Material
  • 0.50mm Pitch
  • Natural Finish
  • M3 (3mm) Thread Size
  • 3.52mm Overall Height (H) [Max]
  • 5.25mm End Diameter (D) [Max]
  • 5.50mm Width A/F Max (J)
  • 1.89mm Nut Thickness (T) [Min]

Discover more about the Aerotight Nuts range

An Aerotight Nut is a variant of self-locking Nuts with anti-vibration properties. Unlike other locking nuts, the innovative design of an Aerotight Nut allows it to be reused several times, and the locking mechanism allows the Nut to be effective even when not fully tightened.

Aerotight Nuts are also an all-metal construction, which makes them free from potentially vulnerable inserts. An all-metal construction gives Aerotight Nuts a significant advantage over alternative self-locking components such as Nylon Locking Nuts, making them more resistant to high temperatures, humid environments, and most chemicals.

Aerotight Nuts

The Aerotight brand is a recognised name within the fastener industry, and has built a reputation for quality and reliability in precision engineering. Aerotight components have been implemented into high performance applications for many years, and have become known for their ability to out-perform alternative self-locking Nuts in even the most hostile environments. Discover Aerotight nuts and other locking mechanisms in our How Do Locking Nuts Work article and watch our tutorial video to see the difference. 


Nuts within the Aerotight range are available in metric thread sizes ranging from M2.5 to M24.


Aerotight nuts are available as standard in A1 Stainless Steel. Additional ranges on A2, A4, and A4-80 Stainless Steel can be manufactured to order. AccuBlack Chemical Matte Black Coatings can be applied on request.

Shipping Information

Shipping Destinations:Worldwide.
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Weight: 0.00kg.

Component History

Product First Available:Wednesday, May 2, 2018
Stock Last Updated:09:37 pm
Wednesday, December 8, 2021
Specification Last Updated:Wednesday, December 8, 2021

APC / Barcodes

APC (Accu Product Code):HAEN-M3-A4
EAN13 (International Article No.):5057195301592
ASIN (Amazon Stock Identification No.):ASIN not defined.