These Forgefix Wing Nuts are a convenient alternative to the standard Hex Nut, & allow hand tightening rather than having to use spanners or other tools. The nuts are bright zinc plated for increased corrosion resistance. Also known as a ' Thumbscrew', the wing nut has two large metal 'wings' for easy tightening & loosening. Application: Where ever a hand tightened fastening is required. Used where frequent adjustments are needed or part removal can be made quickly at some later stage. C