M4 x 20mm Security Pin Torx Button Head Screw (T20) | Tamper Resistant A2 Stainless Steel

Product code: PTBS7380-M4-20-A2
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M4 x 20mm Security Pin Torx Button Head Screw (T20) | Tamper Resistant A2 Stainless Steel
M4 x 20mm Security Pin Torx Button Head Screw (T20) | Tamper Resistant A2 Stainless Steel
M4 x 20mm Security Pin Torx Button Head Screw (T20) | Tamper Resistant A2 Stainless Steel
M4 x 20mm Security Pin Torx Button Head Screw (T20) | Tamper Resistant A2 Stainless Steel
M4 x 20mm Security Pin Torx Button Head Screw (T20) | Tamper Resistant A2 Stainless Steel
M4 x 20mm Security Pin Torx Button Head Screw (T20) | Tamper Resistant A2 Stainless Steel
Quantity
Unit Price
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Unit Price
(inc. VAT)
1 - 9 £0.24 £0.29
10 - 24 £0.20 £0.24
25 - 49 £0.15 £0.18
50 - 99 £0.12 £0.15
100 - 499 £0.10 £0.12
500 - 999 £0.08 £0.10
1000 + £0.07 £0.09

£0.29 / each


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Product Specification
Thread Size M4
Thread Length 20mm
Pitch 0.7mm
Head Diameter 7.60mm
Head Height 2.20mm
Drive Security T20
Standard ISO 7380-1
Head Style Button Head
Material A2 Stainless Steel

Next Day or Standard Delivery available via DHL or Royal Mail.
Order by 4pm (UK) for same day dispatch, Monday to Thursday or 2pm Friday.

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01233 713581


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M4 x Pin Torx Button Head Screw (T20) – A2 Stainless Steel

The M4 x Security Pin Torx Button Head Screw combines a M4 machine thread with a Security T20 drive and a button head. Its centre pin restricts engagement by an ordinary Torx tool while allowing servicing with the correct security bit.

What Are Pin Torx Button Head Screws?

Pin Torx button head screws are machine-thread fasteners with a six-lobe socket and central security pin. This M4 version needs a corresponding Security T20 bit rather than a standard Torx bit. The product is described as Level 1 entry-level security: it offers protection against opportunistic vandalism and interference but is not a guarantee against deliberate removal.

Common Applications

  • Workshop assemblies: Secure guards and plates while keeping access possible with the correct security bit.
  • Public access equipment: Secure removable access panels on equipment installed in shared or public areas.
  • Electrical enclosures: Fix covers to suitably threaded housings where a standard Torx driver should not operate the fastener.
  • Outdoor furniture: Attach serviceable brackets and fittings on furniture exposed to public access.

M4 x Pin Torx Button Head Screw Dimensions

  • Thread Size: M4
  • Thread Length: 20mm
  • Pitch: 0.7mm
  • Head Diameter: 7.60mm
  • Head Height: 2.20mm
  • Drive: Security T20
  • Material: A2 Stainless Steel
  • Standard: ISO 7380-1
  • Head Style: Button Head

Key Benefits

  • A clearly specified security drive size helps identify the correct installation tool.
  • The specified thread pitch supports selection for compatible tapped components.
  • Defined head dimensions help assess the clearance around the assembled fixing.
  • The centre-pin Torx recess cannot be engaged by an ordinary Torx bit of the same size.

Explore more tamper-resistant button head screws to compare thread and drive sizes. If you need help selecting the correct size, call us on 01233 713581.

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