M30 Castle Nuts (DIN 935) - Marine Stainless Steel (A4)


Key Features

  • M30 Metric Thread Size (30mm)
  • 3 Year Extended Warranty.
  • Free Technical Support From Our Engineers.
  • A4 Stainless Steel, also known as marine grade or 316 Stainless Steel. Details.
  • Thread Size (T): M30 (30mm)
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M30 Castle Nuts (DIN 935) - Marine Stainless Steel (A4) Technical Specification

M30 Castle Nuts (DIN 935) - Marine Stainless Steel (A4) Drawing
Castellation Width (D)42mm
Manufacturing StandardDIN 935
MaterialMarine Stainless Steel (A4)
Material SpecificationMarine Stainless Steel (A4)
Metric or Imperial?Metric
Nut Thickness (T)24mm
Nut Width A/F (F)46mm
Slot Width (A)7mm
Thread Size (T)M30 (30mm)
Total Length (L)33mm

Product Certifications

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

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M30 Castle Nuts (DIN 935) - Marine Stainless Steel (A4) Description

The M30 Castle Nuts (DIN 935) - Marine Stainless Steel (A4) has the following features:

  • M30 (30mm) Thread Size (T)
  • DIN 935 Manufacturing Standard
  • 7mm Slot Width (A)
  • 46mm Nut Width A/F (F)
  • Marine Stainless Steel (A4) Material
  • Marine Stainless Steel (A4) Material Specification
  • 3.5mm Pitch
  • Natural Finish
  • 33mm Total Length (L)
  • 42mm Castellation Width (D)
  • Metric Metric or Imperial?
  • 24mm Nut Thickness (T)

Discover more about the Castle Nuts range.

Castle Nuts feature a castellated top, which allows them to be used in unison with a horizontal locking pin. The pin is inserted between the slots on the nut, through a hole in the screw, to create a locked anti-vibration fastening.


Components within this range are manufactured from A2 and A4 Stainless Steel as standard, with specialist PX-3 Chemical Black Coatings available on request.

Metric Castle Nuts

Castle Nuts are manufactured according to the DIN standard 935, and are available in diameters of between M5 and M36. Widths range from 8.00mm to 55.00mm (A/F), and lengths are available from 6.00mm up to 38.00mm.

Shipping Information

Shipping Destinations:Worldwide.
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Weight Band (100 items):Over 5kg. Add to cart to calculate exact weights.

Component History

Product First Available:Sunday, June 28, 2015
Stock Last Updated:05:10 pm
Thursday, January 20, 2022
Specification Last Updated:Thursday, January 20, 2022

APC / Barcodes

APC (Accu Product Code):HCTN-M30-A4
EAN13 (International Article No.):5054328317611
ASIN (Amazon Stock Identification No.):ASIN not defined.