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| Commodity | 2005 | 2007 | 2010 | 2011 |
| Coach screws of iron/steel | $19,583 | $65,476 | $42,894 | $46,164 |
| Wood screws other than coach screws, of iron/steel | | $2,722 | $404 | $6,368 |
| Screw hooks & screw rings, of iron/steel | $400 | | $1,089 | $661 |
| Self-tapping screws of iron/steel | $564 | $265 | $212 | |
| Screws & bolts (excl. of 7318.11-7318.14), whether or not with their nuts/w ... | $449,159 | $173,683 | $688,626 | $1,134,246 |
| Nuts of iron/steel | $36,425 | $42,241 | $73,976 | $131,716 |
| Threaded arts. of iron/steel (excl. of 73.07, 7318.11-7318.16) | $54,723 | $15,160 | $112,282 | $75,946 |
| Spring washers & oth. lock washers, of iron/steel | $703 | $419 | $3,550 | $14,080 |
| Washers (excl. of 7318.21) of iron/steel | $1,480 | $42,478 | $14,825 | $175,092 |
| Rivets of iron/steel | | $2,984 | $12,254 | $1,109 |
| Cotters & cotter-pins, of iron/steel | $3,210 | $8,404 | $8,326 | $47,256 |
| Non-threaded arts. sim. to rivets, cotters and the like, of iron/steel (exc ... | $12,838 | $60,295 | $407,793 | $168,308 |
| Total | $579,085 | $414,127 | $1,366,231 | $1,800,946 |
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