2007-04-12 10:48:12 · 7 answers · asked by Anonymous in Science & Mathematics ➔ Engineering
defiantly screw
2007-04-12 10:51:24 · answer #1 · answered by tire chick 4 · 0⤊ 0⤋
Best invention would be the nail hands down.
It is simple, cheap and reliable.
A screw has much much more complicated manufacturing process than a nail. Nails can be manufactured by a blacksmith if needs be.
If I had to be stuck on an island with a can of screws or a can of nails I would want the nails. Screws can only be effectively applied through the use of a screwdriver or driver. A nail can be driven with a rock if I had too.
2007-04-13 12:02:10 · answer #2 · answered by Anonymous · 0⤊ 0⤋
The screw is a huge improvement over the nail in terms of fastening strength and suitability in fastening a wide variety of materials, but nails are still used with wood because of how cheap they are to manufacturer and how easily they are installed with air guns.
2007-04-12 17:55:02 · answer #3 · answered by Adam S 4 · 0⤊ 0⤋
screw hold better than a nail
2007-04-12 18:17:38 · answer #4 · answered by Trooper 2 · 0⤊ 0⤋
Screw.
Nails only hold shear.
Screws hold shear AND hold tension.
.
2007-04-12 17:54:22 · answer #5 · answered by tlbs101 7 · 1⤊ 0⤋
whatever one uve got when u need it
2007-04-12 17:51:42 · answer #6 · answered by handsome harry 3 · 0⤊ 0⤋
screw of course..............for more reasons than one...........oh hold on did u maen screw as in DIY......................oppps
2007-04-12 18:21:03 · answer #7 · answered by kt 3 · 0⤊ 0⤋