Light Aircraft Association

My Tipsy Nipper has just been through its permit and has had an 'advisery' to ream/drill out the control surface hinges and replace the 3/16" dia clevis pins with 5mm dia pins. Does anybody know where I might source some 5mm pins of an equivalent material to the originals? I've tried to look up the reference given in the Mk2 Owners manual (i.e. SP/4Z/B14-0 3/16") but I've drawn a blank.

http://tasmanindustries.co.uk might be able to help.

Rather than ream out to the metric size, I'd recommend the SP4Y, Cadmium plated pins instead.

"Rather than ream out to the metric size, I'd recommend the SP4Y, Cadmium plated pins instead."

Agreed - I have play in a Nipper which was picked up at Permit a little while ago. My inspector has instructed me to ream out to accept 7/32" SP4Y pins from LAS Aero.
Be aware that you'll need a narrow headed drill if you intend to ream in-situ as the hinges are very close to the wing and a conventional chuck will not allow you to drill parallel holes!

Thanks for all your advice, I'll give SP4Y pins a go when the weather warms up a bit and I can get to the airfield!