4.5mm x 8.1mm (M4) Locking Washer (2-Pronged) 3.5mm Thickness | Nylon

Product code: WASH220
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4.5mm x 8.1mm (M4) Locking Washer (2-Pronged) 3.5mm Thickness | Nylon
4.5mm x 8.1mm (M4) Locking Washer (2-Pronged) 3.5mm Thickness | Nylon
4.5mm x 8.1mm (M4) Locking Washer (2-Pronged) 3.5mm Thickness | Nylon
4.5mm x 8.1mm (M4) Locking Washer (2-Pronged) 3.5mm Thickness | Nylon
4.5mm x 8.1mm (M4) Locking Washer (2-Pronged) 3.5mm Thickness | Nylon
4.5mm x 8.1mm (M4) Locking Washer (2-Pronged) 3.5mm Thickness | Nylon
Quantity
Unit Price
(ex. VAT)
Unit Price
(inc. VAT)
1 - 99 £0.07 £0.08
100 - 999 £0.06 £0.07
1000 - 9999 £0.04 £0.05
10000 + £0.03 £0.03

£0.08 / each


Average production time 14 + days.
Vital Parts - Here to make bulk ordering easy.

Product Specification
Size M4
Internal Diameter 4.5mm
Grip Diameter 3.30mm
Outside Diameter 8.1mm
Thickness 3.5mm
Type 2 Prong
Material Nylon
Colour Natural

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.

Larger Order?

Call our sales team on

01233 713581


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Total Price: £0.00

4.5mm x 8.1mm M4 Anti-Loss Washer | 2 Prong | 3.5mm | Nylon

Designed for light mechanical assemblies, this M4 retaining washer uses inward-facing prongs to create a retaining grip around a compatible screw or bolt. The Nylon construction keeps the component lightweight and corrosion-free while the 3.5mm thickness suits compact assemblies.

What Are Anti-Loss Washers?

Anti-Loss Washers are retaining washers with flexible internal prongs that grip around a compatible screw or bolt. Their purpose is to keep the fastener attached to the assembly so it is less likely to fall away or become misplaced during installation, maintenance or servicing.

Common Applications

  • General Maintenance: Reduces the chance of compatible screws or bolts being dropped or lost when equipment is dismantled.
  • Automotive Assembly: Supports retention of fasteners used around trim, dashboards, wiring and interior equipment.
  • Service Panels: Keeps screws with removable covers or access panels when they are opened for inspection or maintenance.
  • Instrumentation: Helps keep small fasteners attached to equipment housings and adjustment assemblies.

M4 2 Prong Anti-Loss Washer Dimensions

  • Size: M4
  • Internal Diameter: 4.5mm
  • Grip Diameter: 3.30mm
  • Outside Diameter: 8.1mm
  • Thickness: 3.5mm
  • Type: 2 Prong
  • Material: Nylon
  • Colour: Natural

Key Benefits

  • Pronged retention can reduce dropped or misplaced fasteners on removable panels and covers.
  • 4.5mm internal diameter provides the clearance opening around the compatible fastener.
  • 3.5mm thickness provides the specified section for this design.
  • Nylon construction keeps the washer lightweight and non-metallic.

We also stock other designs in our Anti Loss Washers range, including alternative sizes and prong configurations. If you are unsure which internal or grip diameter you need, contact our team on 01233 713581.

Please call for any enquiries!
Mon - Thurs 8.30 am - 5.30 pm
Fri 8.30 am - 3.30 pm
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