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| Commodity | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Coach screws of iron/steel | $333,475 | $269,535 | $17,925 | $41,857 | $313,459 | $180,193 |
| Wood screws other than coach screws, of iron/steel | $77,625 | $259,438 | $296,549 | $172,234 | $257,830 | $219,216 |
| Screw hooks & screw rings, of iron/steel | $5,142 | $10,342 | $11,321 | $10,029 | $14,496 | $57,768 |
| Self-tapping screws of iron/steel | $235,478 | $413,308 | $487,921 | $279,982 | $341,845 | $434,334 |
| Screws & bolts (excl. of 7318.11-7318.14), whether or not with their nuts/w ... | $894,222 | $1,253,645 | $1,790,920 | $1,047,843 | $1,041,768 | $1,133,952 |
| Nuts of iron/steel | $71,412 | $124,808 | $255,670 | $162,272 | $122,438 | $145,893 |
| Threaded arts. of iron/steel (excl. of 73.07, 7318.11-7318.16) | $97,474 | $245,180 | $299,699 | $210,634 | $221,153 | $256,688 |
| Spring washers & oth. lock washers, of iron/steel | $12,407 | $137,567 | $33,193 | $15,115 | $108,246 | $86,738 |
| Washers (excl. of 7318.21) of iron/steel | $70,958 | $123,185 | $198,599 | $90,233 | $584,998 | $91,982 |
| Rivets of iron/steel | $5,830 | $29,358 | $16,456 | $13,762 | $8,871 | $17,320 |
| Cotters & cotter-pins, of iron/steel | $8,944 | $42,695 | $77,264 | $20,012 | $8,116 | $15,978 |
| Non-threaded arts. sim. to rivets, cotters and the like, of iron/steel (exc ... | $85,753 | $126,848 | $186,335 | $141,094 | $144,462 | $99,737 |
| Total | $1,898,720 | $3,035,909 | $3,671,852 | $2,205,067 | $3,167,682 | $2,739,799 |
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