M4 x 12mm Security Socket Countersunk Screws (DIN 7991) - Stainless Steel (A2)


Key Features

  • M4 Metric Thread Size (4mm)
  • A2 Stainless Steel, also known as 18-8 or 304 Stainless Steel. Details.
  • Thread Size (T): M4 (4mm)
  • Length (L): 12mm
  • Drive Size: Pin + SW2.5
View Full Technical Specification.

Available In Other Materials & Finishes

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M4 x 12mm Security Socket Countersunk Screws (DIN 7991) - Stainless Steel (A2) Technical Specification

M4 x 12mm Security Socket Countersunk Screws (DIN 7991) - Stainless Steel (A2) Drawing
Drive SizePin + SW2.5
Head Diameter (D)7.7mm
Head Length (H)2.3mm
Length (L)12mm
Manufacturing StandardDIN 7991
MaterialStainless Steel (A2)
Material SpecificationStainless Steel (A2)
Metric or Imperial?Metric
Security Hexagon Size A/F (J)2.5mm
Thread Size (T)M4 (4mm)

Product Certifications

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

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M4 x 12mm Security Socket Countersunk Screws (DIN 7991) - Stainless Steel (A2) Description

The M4 x 12mm Security Socket Countersunk Screws (DIN 7991) - Stainless Steel (A2) has the following features:

  • M4 (4mm) Thread Size (T)
  • 2.3mm Head Length (H)
  • DIN 7991 Manufacturing Standard
  • 12mm Length (L)
  • Stainless Steel (A2) Material
  • Stainless Steel (A2) Material Specification
  • 0.7mm Pitch
  • Pin + SW2.5 Drive Size
  • Natural Finish
  • Metric Metric or Imperial?
  • 7.7mm Head Diameter (D)
  • 2.5mm Security Hexagon Size A/F (J)

Discover more about the Metric Security Socket Countersunk Screws range

Metric Security Socket Countersunk Screws are a variant of Socket Countersunk Screws, which feature a security Hexagon drive, which is designed to resist tampering. Components within this range are designed for use with AccuScrews’ Security Hexagon Drive Bits.


These components can be manufactured from A2 Stainless Steel. Specialist PX-3 Chemical Black Coatings and Thread Locking Patches can be applied to all Stainless Steel Components.

Metric Security Socket Countersunk Screws

Metric components within this range are available in thread diameters of between M3 and M12, and with lengths from 8.00mm up to 60.00mm.

Imperial Security Socket Countersunk Screws

Security Socket Countersunk Screws are available in imperial sizes ranging from No. 10 to ¼ inch, and in lengths of 1 inch. Additional sizes can be made available on request.

Shipping Information

Shipping Destinations:Worldwide.
View delivery information.
Weight Band (100 items):Between 0.1kg and 0.25kg. Add to cart to calculate exact weights.

Component History

Product First Available:Sunday, June 28, 2015
Stock Last Updated:09:12 am
Friday, September 24, 2021
Specification Last Updated:Friday, September 24, 2021

APC / Barcodes

APC (Accu Product Code):SSSK-M4-12-A2
EAN13 (International Article No.):5054328323810
ASIN (Amazon Stock Identification No.):ASIN not defined.