Interscrews for Westerly Longbow Portlights

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thesaintlyone

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After removing and cleaning the Portlights on the Westerly Longbow its now time to put them back. For which I am going to need to Purchase Interscrews.

Trafalgar Sell a version M5 x 25mm at 0.85p each I require 32 so a grand total of £28

http://www.westerly-yachts.co.uk/product_info.php?cPath=21&products_id=214

I have also found other types on ebay same size considerably cheaper

http://www.ebay.co.uk/itm/M5-Binding-Screws-Posts-Album-docking-screw-Rivet-Book-Scrapbooking-/262147969608?var=&hash=item3d093c9248:m:mBhF1YXF9CMBXVKjcvDJiTw

Is there a significant difference or does anyone know where I can source the appropriate size part anywhere else.

On a related note the portlights originally came with wooden surrounds which were completely rotten do these serve any purpose beyond cosmetics or is there an alternative

Regards
 
Some years ago I owned a Westerly Berwick and had the boat relined by a former Westerly upholsterer. Obviously the windows had to be removed and refitted. The upholsterer supplied the interscrews.
The point of this posting is to advise that the length of the interscrews needed to refit the windows were quite different to the original and varied around the window due to the sealant thickness. Thus a considerable stock of interscrews of different lengths was required (the male end obviously). The alternaive is to use the original female end and have a stock of suitable machine screws of various lengths.
 
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If you're in Hampshire you could try a company called Thunderbolts in Southampton, they carry a huge range of 304 and 316 grade nuts, bolts, screws, washers and other odds and ends. I don't know if they do interscrews though. 02380 333007 if you want to ring them and ask.
 
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When I did the portlights on a Renown, they were not fitted with interscrews although the cabin windows were. The system used was to use domed nuts on the inside. The procedure used for replacement was to fit the window using over-long screws (which were M6 IIRC) and make up tight with plain M6 nuts, saw off the excess length of screw, and then remove the nuts one by one and replace them with domed head ones with a small washer now under each nut.

By the way the ones in the link are nickel-plated mild steel and are completely unsuited to marine use.
 
Well it seems that Trafalgar Prices are about the norm for these so I'll just order those!!! As far as sealing is concerned should I use Butyl Tape of Sealant????
 
thesaintlyone said:
Well it seems that Trafalgar Prices are about the norm for these so I'll just order those!!! As far as sealing is concerned should I use Butyl Tape of Sealant????
Click to expand...

Definitely tape!!! The aforementioned Hadlow did my windows and they use Scapa bedding tape, you need a check after a couple of weeks to do a careful check on tightness (DON'T overtighten just take up to a light hand tight - when new the aim is to compress the tape by 50%)... Also be very careful if you have countersunk screws, Hadlow will only use round head to avoid CSK stress cracks.
 
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