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| Commodity | 2005 | 2006 | 2007 |
| Coach screws of iron/steel | $12,969 | $2,514 | $6,955 |
| Wood screws other than coach screws, of iron/steel | $488,404 | $661,229 | $577,688 |
| Screw hooks & screw rings, of iron/steel | $325,657 | $1,003,033 | $1,536,937 |
| Self-tapping screws of iron/steel | $205,273 | $352,333 | $571,758 |
| Screws & bolts (excl. of 7318.11-7318.14), whether or not with their nuts/w ... | $2,645,513 | $2,744,981 | $3,762,812 |
| Nuts of iron/steel | $291,465 | $570,726 | $773,138 |
| Threaded arts. of iron/steel (excl. of 73.07, 7318.11-7318.16) | $1,332,968 | $310,127 | $470,382 |
| Spring washers & oth. lock washers, of iron/steel | $85,238 | $147,911 | $184,503 |
| Washers (excl. of 7318.21) of iron/steel | $253,242 | $181,509 | $192,376 |
| Rivets of iron/steel | $238,606 | $144,251 | $75,942 |
| Cotters & cotter-pins, of iron/steel | $47,754 | $27,341 | $41,955 |
| Non-threaded arts. sim. to rivets, cotters and the like, of iron/steel (exc ... | $319,372 | $210,425 | $130,392 |
| Total | $6,246,461 | $6,356,380 | $8,324,838 |
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