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1636 ft pounds
A spiral nail.
Many different size nails have 'ribs' on them.They are to make it harder for the nail to be pulled out.A 'spiral' ( ardox ) nail is even harder to pull out.
Allan Dove, a metallurgist, designed the ardox or spiral nail. The design was patented by his empoyer Stelco in 1954.
650 foot/pounds
An 8 penny nail (abbreviated as 8d) is 2.5 inches in length. A 10 penny nail (10d) is 3 inches in length.
A 16d (16 penny) nail is larger. The larger the "penny" the larger the nail. But the lengths can vary, but generally an 8d is 2.5" and an 16d is 3 - 3.5".
a penny
The penny was as old English term used to describe the number of pennies required to purchase 100 nails. Today the term is used only as a measurement of the length of the nail. A common 16 penny nail used in general construction today has a standard length of 3.5 inches, a number 8 gauge diameter shaft (0.162 inches), a head diameter of 11/32nd of an inch and 44 such nails will weigh one pound.
Coke will not melt a penny or a nail; that process would involve heat. Instead, the acid from the soda may oxidize some of the metal atoms in the penny and the nail, causing them to become ions and soluble. The some of the metal will dissolve, causing the penny or nail to become pitted and tarnished. However, these objects will not melt.
coper
The nail length The strength of the nail The shape of the nail occasions