Commodity2005200620072010
Coach screws of iron/steel$821,625$666,432$12,273 
Wood screws other than coach screws, of iron/steel$59,610$14,817$17,894 
Screw hooks & screw rings, of iron/steel$109,322$15,351$222,852 
Self-tapping screws of iron/steel$778,656$639,173$134,495 
Screws & bolts (excl. of 7318.11-7318.14), whether or not with their nuts/w ...$2,344,509$3,417,922$5,734,853$5,255,740
Nuts of iron/steel$265,800$101,962$66,353$1,432,268
Threaded arts. of iron/steel (excl. of 73.07, 7318.11-7318.16)$1,282,815$4,317,856$1,774,642$1,360,002
Spring washers & oth. lock washers, of iron/steel$137,061$28,044$87,141 
Washers (excl. of 7318.21) of iron/steel$26,041$219,037$20,278$237,334
Rivets of iron/steel$349,666$176,129$44,990 
Cotters & cotter-pins, of iron/steel$72,569$71,123$16,325$427,201
Non-threaded arts. sim. to rivets, cotters and the like, of iron/steel (exc ...$729,077$548,813$775,309$656,001
Total$6,976,751$10,216,659$8,907,405$9,368,546