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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Coach screws of iron/steel | $2,353,190 | $2,324,263 | $2,870,226 | $3,271,606 | $3,248,356 | $2,801,529 | $3,435,243 |
| Wood screws other than coach screws, of iron/steel | $13,225,793 | $17,900,141 | $22,055,151 | $23,500,215 | $21,773,088 | $23,518,701 | $27,183,982 |
| Screw hooks & screw rings, of iron/steel | $2,008,707 | $2,616,328 | $2,185,347 | $4,113,210 | $3,275,019 | $3,649,380 | $4,304,110 |
| Self-tapping screws of iron/steel | $39,643,907 | $51,607,442 | $43,427,128 | $47,605,159 | $30,921,390 | $42,852,537 | $49,963,420 |
| Screws & bolts (excl. of 7318.11-7318.14), whether or not with their nuts/w ... | $111,433,771 | $137,719,804 | $192,595,639 | $218,689,000 | $154,821,137 | $187,252,075 | $226,260,384 |
| Nuts of iron/steel | $25,914,928 | $32,459,298 | $39,124,477 | $42,808,453 | $28,459,376 | $35,073,208 | $40,792,804 |
| Threaded arts. of iron/steel (excl. of 73.07, 7318.11-7318.16) | $33,410,059 | $28,696,524 | $39,482,877 | $52,215,913 | $39,700,524 | $46,305,380 | $52,172,648 |
| Spring washers & oth. lock washers, of iron/steel | $7,858,979 | $9,097,327 | $11,701,282 | $13,249,642 | $8,548,399 | $9,947,635 | $12,042,420 |
| Washers (excl. of 7318.21) of iron/steel | $11,682,963 | $12,919,334 | $17,932,908 | $19,253,287 | $12,794,542 | $16,646,799 | $20,943,706 |
| Rivets of iron/steel | $3,784,837 | $5,062,436 | $4,492,411 | $5,318,919 | $3,645,983 | $3,810,906 | $3,855,446 |
| Cotters & cotter-pins, of iron/steel | $2,946,093 | $3,299,102 | $5,020,709 | $3,863,925 | $2,302,368 | $3,043,800 | $3,531,666 |
| Non-threaded arts. sim. to rivets, cotters and the like, of iron/steel (exc ... | $26,075,350 | $32,874,213 | $44,207,519 | $46,336,640 | $28,391,770 | $35,781,249 | $50,614,245 |
| Total | $280,338,577 | $336,576,212 | $425,095,674 | $480,225,969 | $337,881,952 | $410,683,199 | $495,100,074 |
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