W4 Rubber Cavity Fixer

£2.99(inc VAT) £3.99
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  Product Description
The W4 Rubber Cavity Fixer is for caravan and motorhome owners who need to refit a number plate, a back light cluster or an interior fitting to a panel where a normal screw will not hold. Each pack takes two rubber cavity fixings, and each one has a brass nut set into the rubber insert.

You fit it in an 8mm hole. The M4 nut is 12mm long and the screw is M4 x 25mm. As you tighten the screw into the brass nut, the rubber insert expands and grips the panel around the hole. This fits irregular or oversized holes, and substrates you have not identified. It works in sturdy or hollow material, including metal sheet, plasterboard, plywood, glass and plastic. The rubber and brass build resists vibration and corrosion, which counts for a light or plate on the rear of a vehicle on the road.

Owners also use these fixings to change perished rubber grommets about caravan lights, please check the hole size before ordering.

What size hole does the W4 Rubber Cavity Fixer need?


The W4 Rubber Cavity Fixer needs an 8mm hole. Each pack takes 2 rubber fixings, each with an M4 x 12mm brass nut and an M4 x 25mm screw. Tightening the screw expands the rubber insert, which grips sturdy or hollow panels like metal sheet, plywood, plasterboard, glass and plastic.

Specifications
  • Pack of 2 rubber cavity fixings for caravans and motorhomes.
  • M4 x 12mm Nut with M4 x 25mm Screw.
  • Made of high-quality rubber with brass nut for durability.
  • Ideal for number plates, rear light clusters, and interior fittings.
  • Hole diameter required is 8mm.
  • Excellent resistance to vibration and corrosion.

Frequently Asked Questions


What size hole does the W4 Rubber Cavity Fixer require?
The fixer needs an 8mm hole. The nut is M4 x 12mm and the screw is M4 x 25mm, so drill or check the hole at 8mm before you fit it.
What comes in a pack of W4 Rubber Cavity Fixers?
Each pack takes 2 rubber cavity fixings. Each fixing has a brass nut, and the fixings use an M4 x 12mm nut with an M4 x 25mm screw.
What materials does the W4 Rubber Cavity Fixer work in?
It works in sturdy or hollow material, including metal sheet, plasterboard, plywood, glass and plastic. It also fits unknown substrates and irregular or oversized holes.
What is the W4 Rubber Cavity Fixer used for on a caravan or motorhome?
It is used to fit number plates, back light clusters and interior fittings to caravans and motorhomes. Owners also use it where a rubber grommet around a light has perished.
How does a rubber cavity fixer hold in place?
You thread the screw into the brass nut. As it tightens the rubber insert expands and grips the panel around the 8mm hole, and the rubber and brass withstand vibration and corrosion.
EAN-13 : 5019328377294

2 FAQs on the W4 Rubber Cavity Fixer

I have a 1997 Sterling Eccles Jade and the rubber fixings that the rear light securing screws fit into are perished. Any Idea where I can get the rubber fixing lugs from?
We have had success in using rubber cavity fixings, our ref. 105446. The rubber cavity fixing must be secured in the body by putting a washer underneath the screw head and then screwing in to expand the rubber. Once secure the screw is removed and then used to fix the light.
Rear light cluster. i removed mine to replace a bulb and the screws go into a black rubber grommet. do you stock these. there appears to be no nut vulcanised into the grommet.
We have had some success with the rubber cavity fixing, our ref 105446. The rubber has to be fixed prior to fitting the light and you will need a suitable 'repair washer' to do this.

1 Customer Review on W4 Rubber Cavity Fixer

Cavity Fixer

by Douglas Brant (29 Aug 2018)
5 star review(5/5)
I hunted high and low for these as my front light needed replaced on the caravan and the rubber gromit was perished-they seem to fit all bored holes for whatever purpose on the caravan - they worked a treat although i had to slightly enlarge the holes on the light itself
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If you’ve changed your mind about keeping your purchase, please return it in its original condition with proof of purchase and we’ll exchange or refund it. Unless faulty, this should be within 100 days of receiving your order. By original condition, we’d expect this to mean that you’ve kept packaging and labels, and that the item is undamaged and unused.

For further information of how to return your item, please visit the "Returning an Unwanted/Faulty/Damaged Item" section on our Help Page.
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