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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Coach screws of iron/steel | $2,297,801 | $2,132,042 | $4,560,134 | $3,102,674 | $4,703,206 | $11,979,733 | $11,481,764 |
| Wood screws other than coach screws, of iron/steel | $442,033 | $828,573 | $764,371 | $844,193 | $439,624 | $686,116 | $839,097 |
| Screw hooks & screw rings, of iron/steel | $6,247,497 | $4,163,721 | $9,178,414 | $6,610,618 | $5,232,750 | $6,273,403 | $6,936,281 |
| Self-tapping screws of iron/steel | $15,237,903 | $11,453,875 | $9,056,854 | $8,742,082 | $4,686,113 | $6,396,418 | $9,038,755 |
| Screws & bolts (excl. of 7318.11-7318.14), whether or not with their nuts/w ... | $141,058,273 | $165,764,017 | $189,208,923 | $209,715,585 | $163,087,899 | $211,997,930 | $259,243,587 |
| Nuts of iron/steel | $13,722,120 | $17,534,069 | $25,389,652 | $29,007,542 | $18,657,134 | $19,733,864 | $24,738,728 |
| Threaded arts. of iron/steel (excl. of 73.07, 7318.11-7318.16) | $14,082,574 | $19,987,125 | $18,770,609 | $31,911,056 | $17,073,404 | $24,125,122 | $33,217,291 |
| Spring washers & oth. lock washers, of iron/steel | $1,569,862 | $1,355,781 | $1,634,100 | $1,990,438 | $1,591,147 | $2,026,185 | $4,415,082 |
| Washers (excl. of 7318.21) of iron/steel | $5,695,464 | $7,291,121 | $6,755,590 | $7,535,991 | $10,659,539 | $15,803,683 | $20,828,860 |
| Rivets of iron/steel | $5,685,467 | $4,453,400 | $6,594,199 | $8,166,538 | $7,433,582 | $11,298,485 | $9,484,031 |
| Cotters & cotter-pins, of iron/steel | $691,269 | $1,116,485 | $774,368 | $999,597 | $975,673 | $1,901,802 | $2,537,732 |
| Non-threaded arts. sim. to rivets, cotters and the like, of iron/steel (exc ... | $11,661,689 | $12,088,610 | $8,301,953 | $8,559,592 | $11,460,920 | $11,122,443 | $12,436,202 |
| Total | $218,391,952 | $248,168,819 | $280,989,167 | $317,185,906 | $246,000,991 | $323,345,184 | $395,197,410 |
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