3.9-6mm Step Plug (9mm Step) 16mm Length | Purple Silicone

Product code: STEP0003PU
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3.9-6mm Step Plug (9mm Step) 16mm Length | Purple Silicone
3.9-6mm Step Plug (9mm Step) 16mm Length | Purple Silicone
3.9-6mm Step Plug (9mm Step) 16mm Length | Purple Silicone
3.9-6mm Step Plug (9mm Step) 16mm Length | Purple Silicone
3.9-6mm Step Plug (9mm Step) 16mm Length | Purple Silicone
3.9-6mm Step Plug (9mm Step) 16mm Length | Purple Silicone
Quantity
Unit Price
(ex. VAT)
Unit Price
(inc. VAT)
1 - 1 £0.32 £0.38
2 - 99 £0.32 £0.38
100 - 249 £0.23 £0.28
250 - 499 £0.19 £0.23
500 - 999 £0.15 £0.18
1000 + £0.11 £0.13

£0.38 / each


Up to 197 units
In Stock
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Order within for same day dispatch.
197 + units
Available for production
Average production time 14 + days.
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Product Specification
Narrowest Diameter 3.9mm
Widest Diameter 6.0mm
Step Diameter 6.4mm
Step Length 9.0mm
Plug Length 16.0mm
Colour Purple

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


Frequently Bought Together

Total Price: £0.00

16.0mm Silicone Masking Step Plug | 6.4mm Step Diameter | Purple

Where a reusable hole masking plug is needed for precision finishing, this purple silicone step plug gives a secure option for threaded and non-threaded openings. The 6.4mm step diameter and 16.0mm length support a neat fit while the colour coding helps teams identify the correct size quickly.

Colour-coded sizing is useful when multiple plug dimensions are being handled on the same bench or coating line. The silicone material also offers resistance to common process chemicals, supporting repeated use in anodising, spraying and powder coating environments.

What Are Silicone Step Plugs?

Silicone step plugs are reusable high temperature masking plugs with a stepped profile that helps cover several compatible hole sizes. They are commonly used during powder coating, anodising, electroplating, painting and spraying to keep holes, threads and internal surfaces free from coating or process contamination.

Common Applications

  • Plugging tapered openings on automotive components during coating cycles
  • Protecting holes on aerospace, electronics and precision engineering parts
  • Masking access holes where a flush surface finish is important
  • Reusable protection for spray booths, finishing lines and maintenance work

6.4mm x 16.0mm Silicone Step Plug Dimensions

  • Material: Silicone
  • Step Diameter: 6.4mm
  • Widest Diameter: 6.0mm
  • Narrowest Diameter: 3.9mm
  • Step Length: 9.0mm
  • Plug Length: 16.0mm
  • Colour: Purple

High Temperature Masking Use

Use this silicone hole masking plug where colour-coded selection, clean removal and protection against coating build-up are important. The stepped shape can suit threaded and non-threaded holes, while the silicone construction supports repeated use in finishing processes up to 315°C.

View our full Silicone Step Plugs range.

Product Support and Trade Orders

Need support matching a plug to a hole size or finishing process? Contact Vital Parts on 01233 713581 for sizing guidance, sample support where available and help with repeat supply for masking operations.

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