A common use for this is in the fittings that are subject to force, e.g. for securing Retractable Toggle Handle Cleats to the Deck of your kayak.
Nneeds to be screwed into either an inset thread or an internal nut (and washer).
This is an Imperial (rather than metric Screw) so best suited for kayaks or fittings made in the USA or sold into the US market.
1/4 inch Diameter
1 inch Length
20 Threads Per Inch Pitch