Ages ago I removed about 6 of the screws for the engine undertray and front left mudguard liner so I could unplug a broken windscreen washer level sensor. Now months later I've finally got round to getting a new sensor from Lexus.

Due to ineptitude on my part , I can't find the screws I took out. They are not vital as there are enough screws left to hold everything in place, but I'd still like to replace them after fitting the new sensor.

If anyone has parted out a Lexus recently and still has some screws knocking around I'll send you some beer vouchers in exchange for a few. They are 20mm long, combined Philips / hex heads with captive 20mm washers, and they have quite a deep thread. They have a black finish and are incidentally rust free after 10 years of British weather!

I've checked a few places like Halfords and B&Q for similar screws but they don't sell anything that looks like it would last longer than 2 weeks without rusting to bits.

Thanks