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| Commodity | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Coach screws of iron/steel | | | $6,594 | | | |
| Wood screws other than coach screws, of iron/steel | | | $6,597 | | | |
| Screw hooks & screw rings, of iron/steel | | $1,263 | $1,180 | | $1,415 | $1,744 |
| Self-tapping screws of iron/steel | | $150 | | | | |
| Screws & bolts (excl. of 7318.11-7318.14), whether or not with their nuts/w ... | $255 | $7,592 | $61,274 | $12,172 | $113,887 | $19,528 |
| Nuts of iron/steel | | $1,275 | $9,581 | $5,576 | $23,838 | $15,525 |
| Threaded arts. of iron/steel (excl. of 73.07, 7318.11-7318.16) | | $3,270 | $1,747 | $2,597 | $184 | $8,767 |
| Spring washers & oth. lock washers, of iron/steel | | $1,113 | $10 | | | |
| Washers (excl. of 7318.21) of iron/steel | | $304 | $10,543 | $2,513 | $153 | $3,091 |
| Rivets of iron/steel | | $28 | $75 | $347 | | $76 |
| Cotters & cotter-pins, of iron/steel | | $2,160 | $2,788 | | $680 | |
| Non-threaded arts. sim. to rivets, cotters and the like, of iron/steel (exc ... | | $323 | $95 | $221 | | |
| Total | $255 | $17,478 | $100,484 | $23,426 | $140,157 | $48,731 |
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