Can't for the life of me remember their name....circular washer with triangular prongs facing inwards, hold things on by friction. Half washer, half clip..

Are they clipnuts ???Driving me nuts!!!

[Edited on 2/3/14 by stevebubs]

Speed fastener?

Fir tree clips finds them

Nope...neither of the above throws anything familiar up...

Finally found some on ebay...

50 piece Assortment Genuine Starlock Washers Push on Clips for Round Shaft

Looks like starlock washers are their name..

[Edited on 2/3/14 by stevebubs]

I believe you are thinking of J-Clips or U-Clips, some of them are for self tappers and some of them are threaded.

Oops. should read the whole thread

Starlock washers, yeah that's them

[Edited on 2/3/14 by RoadkillUK]