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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Coach screws of iron/steel | $1,594,601 | $6,108,838 | $10,740,404 | $15,324,962 | $2,205,594 | $1,923,509 | $3,673,637 |
| Wood screws other than coach screws, of iron/steel | $123,073 | $314,669 | $2,599,699 | $2,781,555 | $2,447,032 | $4,115,847 | $4,620,961 |
| Screw hooks & screw rings, of iron/steel | $66,264 | $182,021 | $167,994 | $95,926 | $220,198 | $300,454 | $259,902 |
| Self-tapping screws of iron/steel | $20,638,539 | $18,004,001 | $17,922,361 | $14,309,859 | $21,487,031 | $29,228,242 | $53,550,367 |
| Screws & bolts (excl. of 7318.11-7318.14), whether or not with their nuts/w ... | $121,534,705 | $140,793,888 | $191,706,588 | $213,344,151 | $135,039,598 | $215,741,079 | $285,915,014 |
| Nuts of iron/steel | $32,597,966 | $38,687,307 | $44,905,171 | $53,050,490 | $30,806,265 | $45,267,901 | $55,438,771 |
| Threaded arts. of iron/steel (excl. of 73.07, 7318.11-7318.16) | $1,197,329 | $2,688,663 | $4,854,972 | $7,777,289 | $9,590,711 | $15,811,164 | $19,467,010 |
| Spring washers & oth. lock washers, of iron/steel | $532,370 | $320,231 | $731,321 | $696,385 | $575,376 | $1,465,515 | $3,409,995 |
| Washers (excl. of 7318.21) of iron/steel | $13,165,082 | $14,144,448 | $18,710,399 | $21,856,513 | $19,159,790 | $25,338,227 | $32,345,700 |
| Rivets of iron/steel | $765,805 | $732,887 | $1,162,869 | $1,616,514 | $1,420,675 | $1,750,558 | $1,913,250 |
| Cotters & cotter-pins, of iron/steel | $4,645,148 | $6,613,720 | $10,727,523 | $8,444,081 | $6,747,885 | $9,741,885 | $12,295,747 |
| Non-threaded arts. sim. to rivets, cotters and the like, of iron/steel (exc ... | $8,782,583 | $10,138,801 | $12,632,771 | $14,415,213 | $12,207,140 | $13,779,093 | $18,418,254 |
| Total | $205,643,465 | $238,729,474 | $316,862,072 | $353,712,938 | $241,907,295 | $364,463,474 | $491,308,608 |
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