M5 x 20mm Thin Knurled Thumb Screw (DIN 653) | A1 Stainless Steel

Product code: THUM653-M5-20-A1
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M5 x 20mm Thin Knurled Thumb Screw (DIN 653) | A1 Stainless Steel
M5 x 20mm Thin Knurled Thumb Screw (DIN 653) | A1 Stainless Steel
M5 x 20mm Thin Knurled Thumb Screw (DIN 653) | A1 Stainless Steel
M5 x 20mm Thin Knurled Thumb Screw (DIN 653) | A1 Stainless Steel
M5 x 20mm Thin Knurled Thumb Screw (DIN 653) | A1 Stainless Steel
M5 x 20mm Thin Knurled Thumb Screw (DIN 653) | A1 Stainless Steel
Quantity
Unit Price
(ex. VAT)
Unit Price
(inc. VAT)
1 - 49 £1.98 £2.38
50 - 99 £1.72 £2.06
100 - 249 £1.52 £1.83
250 - 499 £1.32 £1.59
500 - 999 £1.23 £1.47
1000 + £1.11 £1.33
£2.38 / each
Quantity:


Product Specification
Thread Size M5
Thread Length 20mm
Pitch 0.80mm
Head Diameter 20mm
Head Height 4.0mm
Standard DIN 653
Material A1 Stainless Steel

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M5 x 20mm Thin Knurled Thumb Screw (DIN 653) | A1 Stainless Steel

Specified where display frames and adjustable brackets requires frequent access, this M5 x 20mm hand-tightened knurled fastener combines a thin 4.0mm head with a tactile knurled edge. Its 20mm thread follows a 0.80mm pitch and is manufactured to DIN 653 for consistent dimensional selection.

What Are Thin Knurled Thumb Screws?

The defining feature of a DIN 653 fastener is its thin knurled head. Its textured circumference provides grip for fingers while the metric thread engages a matching tapped hole or nut, allowing components to be secured and released without a separate driver.

Common Applications

  • Electrical Cabinets: Provides a hand-adjustable fixing for access covers and internal panels.
  • Display Frames: Supports repeat assembly of stands, frames and demonstration equipment.
  • Workshop Fixtures: Fastens adjustable parts that operators need to release regularly.
  • Test Equipment: Provides controlled hand fastening for fixtures used during repeated trials.

M5 x 20mm Thin Knurled Thumb Screw Dimensions

  • Thread Size: M5
  • Thread Length: 20mm
  • Pitch: 0.80mm
  • Head Diameter: 20mm
  • Head Height: 4.0mm
  • Material: A1 Stainless Steel
  • Standard: DIN 653

Key Benefits

  • 20mm thread offers general-purpose engagement for covers, brackets and compact assemblies
  • DIN 653 dimensions simplify selection for standardised assemblies
  • Low-profile head is useful on visible panels where a discreet fixing is preferred
  • Thin 4.0mm head reduces projection in confined assemblies

Further DIN 653 sizes are listed on the Thin Knurled Thumb Screw category. You can also explore the wider Knurled Fasteners range where a different hand-operated profile is required. Technical sales support is available on 01233 713581.

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