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| Commodity | 2009 | 2010 | 2011 |
| Coach screws of iron/steel | $344,473 | $164,368 | $230,358 |
| Wood screws other than coach screws, of iron/steel | $1,328,702 | $19,194 | $36,608 |
| Screw hooks & screw rings, of iron/steel | | $15,149 | $15,650 |
| Self-tapping screws of iron/steel | | $89,070 | $118,782 |
| Screws & bolts (excl. of 7318.11-7318.14), whether or not with their nuts/w ... | | $1,088,956 | $1,427,681 |
| Nuts of iron/steel | | $469,012 | $363,046 |
| Threaded arts. of iron/steel (excl. of 73.07, 7318.11-7318.16) | $822,286 | $285,172 | $293,738 |
| Spring washers & oth. lock washers, of iron/steel | | $187,053 | $160,195 |
| Washers (excl. of 7318.21) of iron/steel | | $244,323 | $248,191 |
| Rivets of iron/steel | | $10,130 | $12,652 |
| Cotters & cotter-pins, of iron/steel | | $154,718 | $212,289 |
| Non-threaded arts. sim. to rivets, cotters and the like, of iron/steel (exc ... | $650,002 | $191,786 | $147,606 |
| Total | $3,145,463 | $2,918,931 | $3,266,796 |
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