5.9mm x 9.9mm (M4) Anti-Loss Washer (4-Pronged) 0.8mm Thickness | Nylon

Product code: WASH114
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5.9mm x 9.9mm (M4) Anti-Loss Washer (4-Pronged) 0.8mm Thickness | Nylon
5.9mm x 9.9mm (M4) Anti-Loss Washer (4-Pronged) 0.8mm Thickness | Nylon
5.9mm x 9.9mm (M4) Anti-Loss Washer (4-Pronged) 0.8mm Thickness | Nylon
5.9mm x 9.9mm (M4) Anti-Loss Washer (4-Pronged) 0.8mm Thickness | Nylon
5.9mm x 9.9mm (M4) Anti-Loss Washer (4-Pronged) 0.8mm Thickness | Nylon
5.9mm x 9.9mm (M4) Anti-Loss Washer (4-Pronged) 0.8mm Thickness | Nylon
Quantity
Unit Price
(ex. VAT)
Unit Price
(inc. VAT)
1 - 499 £0.25 £0.30
500 - 999 £0.20 £0.24
1000 - 4999 £0.15 £0.18
5000 - 9999 £0.12 £0.15
10000 + £0.09 £0.11

£0.30 / each


Up to 8,329 units
In Stock
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8,329 + units
Available for production
Average production time 14 + days.
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Product Specification
Size M4
Internal Diameter 5.9mm
Grip Diameter 3.80mm
Outside Diameter 9.9mm
Thickness 0.8mm
Type 4 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.

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Call our sales team on

01233 713581


Frequently Bought Together

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5.9mm x 9.9mm M4 Anti-Loss Washer | 4 Prong | 0.8mm | Nylon

This M4 fastener retaining washer is suited to assemblies where fastener retention matters during production, maintenance or repeated access. The 4 prong format grips around the compatible fixing while the 9.9mm outside diameter provides the washer's supporting footprint.

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

  • Electrical Equipment: Helps keep compatible screws associated with panels, housings and covers during installation or servicing.
  • Electronics: Provides a lightweight retaining washer for screws used in housings, boards and equipment assemblies.
  • Domestic Appliances: Supports fastener retention around appliance covers, internal fittings and maintenance points.
  • Wiring Assemblies: Can retain compatible fasteners around cable management, electrical panels and wiring equipment.

M4 4 Prong Anti-Loss Washer Dimensions

  • Size: M4
  • Internal Diameter: 5.9mm
  • Grip Diameter: 3.80mm
  • Outside Diameter: 9.9mm
  • Thickness: 0.8mm
  • Type: 4 Prong
  • Material: Nylon
  • Colour: Natural

Key Benefits

  • Nylon construction keeps the washer lightweight and non-metallic.
  • Natural finish makes the washer easy to identify during installation and inspection.
  • 5.9mm internal diameter provides the clearance opening around the compatible fastener.
  • 9.9mm outside diameter provides the washer's overall supporting footprint.

You can compare more retaining styles and dimensions in our full Anti Loss Washers category. If you need help matching the washer to your fastener, call us 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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