M4 (5mm) x 20mm Precision Slotted Shoulder Screws - Black Stainless Steel (A2)


Key Features

  • M4 Metric Thread Size (4mm)
  • Thread Size (T): M4 (4mm)
  • Shoulder Length (L): 20mm
  • Shoulder Diameter (d): 5mm
  • Material: Stainless Steel (A2)
View Full Technical Specification.

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M4 (5mm) x 20mm Precision Slotted Shoulder Screws - Black Stainless Steel (A2) Technical Specification

M4 (5mm) x 20mm Precision Slotted Shoulder Screws - Black Stainless Steel (A2) Drawing
FinishMatte Black
Head Diameter (D)8mm
Head Length (H)4mm
Manufacturing StandardNot Standardised
MaterialStainless Steel (A2)
Material SpecificationStainless Steel (A2)
Metric or ImperialMetric
Shoulder Diameter (d)5mm
Shoulder Length (L)20mm
Thread Length (E)5mm
Thread Size (T)M4 (4mm)
Tolerance - General+/-0.13mm
Tolerance - Shoulder Diameter+00/-0.025mm

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 (5mm) x 20mm Precision Slotted Shoulder Screws - Black Stainless Steel (A2) Description

The M4 (5mm) x 20mm Precision Slotted Shoulder Screws - Black Stainless Steel (A2) has the following features:

  • M4 (4mm) Thread Size (T)
  • 4mm Head Length (H)
  • Not Standardised Manufacturing Standard
  • 5mm Thread Length (E)
  • 20mm Shoulder Length (L)
  • Stainless Steel (A2) Material
  • Stainless Steel (A2) Material Specification
  • +/-0.13mm Tolerance - General
  • Matte Black Finish
  • 8mm Head Diameter (D)
  • 5mm Shoulder Diameter (d)
  • Metric Metric or Imperial
  • +00/-0.025mm Tolerance - Shoulder Diameter

Discover more about the Metric Precision Slotted Shoulder Screws range

AccuScrews' Slotted Shoulder Screws feature a large, unthreaded portion below the screw head, which is machined to a a highly precise tolerance of +/-0.025mm. The tight tolerance of this component makes it ideal for use in high-precision sliding or rotating mechanisms. AccuScrews also offer a range of Cost Effective Slotted Shoulder Screws, which are manufactured to the same high standards as pour standard Shoulder Screw ranges.

AccuScrews’ Slotted Shoulder Screws are also fitted with a widely-used slotted head type, making them ideal for use alongside AccuScrews’ Slotted Drive Bits and Insulated Screwdrivers.


These components can be manufactured from both A2 and A4 (Marine Grade) Stainless Steel. Additional features such as Thread Locking Patches and PX-3 Chemical Black Coatings can also be applied.

Metric Slotted Shoulder Screws

Metric Slotted Shoulder Screws within our range are produced in thread sizes ranging from M3 to M10, shoulder diameters of 4.00mm to 12.00mm, and are available with shoulder lengths from 4.00mm up to 30.00mm.

Imperial Slotted Shoulder Screws

Slotted Shoulder Screws are available in imperial thread sizes from No. 4 up to 3/8 inch, with shoulder lengths of between 1/8 inch and 1.1/2 inch, and shoulder diameters from 1/8 inch up to ½ inch.

Shipping Information

Shipping Destinations:Worldwide.
View delivery information.
Weight: 0.00kg.

Component History

Product First Available:Sunday, June 28, 2015
Stock Last Updated:11:13 am
Sunday, September 19, 2021
Specification Last Updated:Sunday, September 19, 2021

APC / Barcodes

APC (Accu Product Code):SFHZ-M4-20-A2-BL
EAN13 (International Article No.):5057195017431
ASIN (Amazon Stock Identification No.):ASIN not defined.