screwspike

plural screwspikes

1. rail transportA heavy-duty threaded metal fastener used in railway engineering to secure steel rails or tie plates to railroad ties.

   The tablet is rectangular; there are two holes for the spike and the screwspike; the lower face is horizontal and the upper face slopes downwards […]

   1906, X., “New Armoured Pickled Wood Bedplate”, in Bulletin of the International Railway Congress Association, page 1066

   2 more examples

   A very few sleepers had become split and were no longer fit for use; the others had as a maximum a wear of six millimeters (¼ in.) just below the bedplate and no screwspike had worked loose in the wood.

   1904 December 16, “Permanent Way for Fast Train Services”, in The Railroad Gazette, page 643

   The full domestic requirements of rails, sleepers, dogspikes and screwspikes, tie rods, bearing plates, and other material required for permanent railways are fully met from indigenous production.

   1972 December 23, “Contours of Progress in Engineering Industry”, in Economic and Commercial News, volume 2, number 52, page 15