Whenever you want to create a soft-looking but hard-wearing path or a sitting area without spending a fortune, gravel is the option that springs to mind. It is a bit of a Marmite subject, but that may be because many people donât realise how many types of gravel there are and the different ways they can be laid.
In this article we will explore the use of the UNO type fitter and the UNO fitter adapter. An UNO fitter is a large threaded ring in the middle of the fabric shades top tripod. It is designed to thread onto UNO sockets. UNO sockets have the same matching thread on their socket shell. The most common application for this type of shade and holder is the bridge arm floor lamp.
UNF (Unified Fine) is the same as UNC except that for each size of bolt, the number of threads per inch is higher, so the thread is finer. UNEF (Unified Extra Fine) is the same as UNF except that the number of threads per inch is even higher for each fastener size. UNF and UNEF fasteners are generally available only from industrial fastener suppliers. 4UN, 6UN, 8UN, 12UN, 16UN, 20UN, 28UN, and 32UN are thread series in which the number before the UN indicates the number of threads per inch.