Threaded Nuts - 1/4-27 UNC 

A 1/4-27 UNC threaded nut is a type of fastening device consisting of a square or hexagonal block, usually of metal, with a hole in the centre having internal, or female, 1/4-27 UNC Thread. Grand Brass Lamp Parts has a large selection of 1/4-27 UNC Threaded Knurled Nuts available. For Common Questions about Measuring Lamp Thread click here.