For over fifty years, Keystone Electronics has been manufacturing precision electronic interconnect components and hardware. 

Keystone’s offering has been created specifically for use by OEM Designers and Engineers who create and develop state-of-the-art electronic products, instruments and systems. While Keystone catalog products meet most standard requirements, modifications as well as custom fabrications can be manufactured to meet your special needs.

The Nylon shoulder washers and bushings are available with outside diameters ranging from 0.181" to 0.513". Clearance holes are made to accommodate #2 through 0.250" screws (M2 through M6). The mounting hole diameters are from 0.125" to 0.312"with thicknesses from 0.025" to 0.750". Material is a molded grade 6/6 Nylon ASTM D4066.