screw spike

screw spike

[′skrü ‚spīk]
(design engineering)
A large nail with a helical thread on the upper portion of the shank; used to fasten railroad rails to the ties.
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References in periodicals archive ?
Tie plates, frog plates, turnout plates and switch plates, screw spikes, pandrol clips, rail joint bars, UIC 33 joint bars, insulated joint, insulated joints required in guard rails, Joint bar bolts and washers.
The screw spikes of a few of the ties have risen slightly.
screw spikes, insulators and pads, switch rods, closure rails, 19 foot, 6 inch right hand switch
These turnouts to be supplied with all frogs, rails, plates, rods, pads, fasteners, screw spikes, insulators, pads, switch rods, closure rods, and switch points (see technical requirements)
Following the accident, Canadian National improved its protocols for inspecting curves, turnouts and bridge decks with screw spikes.