Shrouded captive screw

作者： Kenneth A. Swanstrom

DOI:

关键词: Screw 、 Fastener 、 Shroud 、 Structural engineering 、 Barrel (horology) 、 Head (vessel) 、 Screw head 、 Flange 、 Engineering 、 Spring (mathematics)

摘要: A panel fastener includes a smooth-surface cylindrical shroud encompassing the periphery of screw head. The is freely rotatable about shank and has sides extending down around barrel which affixed to panel. fitted by an internal flange yieldably held between underside head end spring. top edge protective does not extend above screw. components are dimensioned so that away from side when fully compressed. may be press-fit into as assembled unit applying ram pressure assembly barrel.