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| Commodity | 2009 | 2010 | 2011 |
| Coach screws of iron/steel | $31,042 | $27,561 | $3,926 |
| Wood screws other than coach screws, of iron/steel | $4,916 | $13,798 | $50,204 |
| Screw hooks & screw rings, of iron/steel | $2,626 | $4,159 | $6,416 |
| Self-tapping screws of iron/steel | $108,833 | $61,419 | $107,195 |
| Screws & bolts (excl. of 7318.11-7318.14), whether or not with their nuts/w ... | $775,561 | $1,398,601 | $1,835,791 |
| Nuts of iron/steel | $250,760 | $197,598 | $585,493 |
| Threaded arts. of iron/steel (excl. of 73.07, 7318.11-7318.16) | $253,135 | $233,262 | $340,765 |
| Spring washers & oth. lock washers, of iron/steel | $7,750 | $11,946 | $48,887 |
| Washers (excl. of 7318.21) of iron/steel | $62,500 | $59,995 | $172,590 |
| Rivets of iron/steel | $28,346 | $33,909 | $24,159 |
| Cotters & cotter-pins, of iron/steel | $11,677 | $3,652 | $57,245 |
| Non-threaded arts. sim. to rivets, cotters and the like, of iron/steel (exc ... | $170,044 | $206,999 | $337,627 |
| Total | $1,707,190 | $2,252,899 | $3,570,298 |
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