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| Commodity | 2005 | 2006 | 2007 | 2008 |
| Coach screws of iron/steel | $138,225 | $148,093 | $147,379 | $193,807 |
| Wood screws other than coach screws, of iron/steel | $109,811 | $167,565 | $172,532 | $89,921 |
| Screw hooks & screw rings, of iron/steel | $75,553 | $152,409 | $171,766 | $198,201 |
| Self-tapping screws of iron/steel | $85,253 | $81,348 | $47,801 | $76,267 |
| Screws & bolts (excl. of 7318.11-7318.14), whether or not with their nuts/w ... | $2,477,777 | $2,697,004 | $3,188,578 | $4,424,754 |
| Nuts of iron/steel | $252,513 | $320,364 | $395,618 | $403,618 |
| Threaded arts. of iron/steel (excl. of 73.07, 7318.11-7318.16) | $578,424 | $2,554,670 | $3,105,328 | $1,125,527 |
| Spring washers & oth. lock washers, of iron/steel | $42,397 | $105,862 | $62,706 | $66,447 |
| Washers (excl. of 7318.21) of iron/steel | $186,915 | $339,570 | $349,613 | $578,044 |
| Rivets of iron/steel | $36,803 | $70,400 | $76,981 | $71,243 |
| Cotters & cotter-pins, of iron/steel | $11,406 | $19,602 | $9,630 | $11,387 |
| Non-threaded arts. sim. to rivets, cotters and the like, of iron/steel (exc ... | $469,396 | $1,886,451 | $1,265,816 | $2,933,579 |
| Total | $4,464,473 | $8,543,338 | $8,993,748 | $10,172,795 |
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