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Fastener pennyweight

Originally British, the term pennyweight used to denote the number of nails (1000) that one could purchase for a penny. Which type of nail designated 10d (ten penny) will provide greater strength?

A. Box
B. Common
C. Cooler
D. None of the above

AnswerB. Common. 10d common nails are 0.148 in. diameter, whereas 10d box nails are 0.128 in. dia., providing 80% less strength. 10d cooler nails are 0.120 in. dia., slightly shorter than the first two, providing the least strength.

ARE 4.0 exam prep: BDCS

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