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Current hierarchy for hardware (272)
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hardware (272) hardware (272) exclude
  bearings and rollers (1) hardware (272) -> bearings and rollers (1)  
  belt couplings (3) hardware (272) -> belt couplings (3)  
  chains and chain links (3) hardware (272) -> chains and chain links (3)  
  clasps and fastenings (3) hardware (272) -> clasps and fastenings (3)  
  door springs (3) hardware (272) -> door springs (3)  
  fasteners (56) hardware (272) -> fasteners (56) exclude
    nails (12) hardware (272) -> fasteners (56) -> nails (12)  
    nuts and bolts (4) hardware (272) -> fasteners (56) -> nuts and bolts (4)  
    rivets (14) hardware (272) -> fasteners (56) -> rivets (14)  
    screws (18) hardware (272) -> fasteners (56) -> screws (18)  
  faucets (15) hardware (272) -> faucets (15)  
  gas and liquid valves (110) hardware (272) -> gas and liquid valves (110)  
  gaskets and seals (2) hardware (272) -> gaskets and seals (2)  
  hinges (18) hardware (272) -> hinges (18)  
  hose couplings (3) hardware (272) -> hose couplings (3)  
  knobs (4) hardware (272) -> knobs (4)  
  latches (3) hardware (272) -> latches (3)  
  locks (24) hardware (272) -> locks (24)  
  nut locks (4) hardware (272) -> nut locks (4)  
  packing for joints (1) hardware (272) -> packing for joints (1)  
  padlocks (6) hardware (272) -> padlocks (6)  
  pipe hangers (1) hardware (272) -> pipe hangers (1)  
  plumbing fittings (1) hardware (272) -> plumbing fittings (1)  
  storage cabinets (5) hardware (272) -> storage cabinets (5)  
  tool holding clips (1) hardware (272) -> tool holding clips (1)  
  window sashes (4) hardware (272) -> window sashes (4)  
 
Full Hierarchy | agricultural (3,488) | armaments (163) | combination tools (637) | construction machines (96) | electrical devices (1,405) | gauges (108) | handheld power tools (825)
hardware (272) | household tools (118) | household (2,467) | industrial machines (1,982) | industrial tanks (5) | industrial tools (1,271) | knives and cutters (180) | layout tools (2,673)
manufacturing (380) | material handling (398) | metalworking machines (15,362) | metalworking tools (2,088) | musical instruments (58) | patent withdrawn (9) | photographic apparatus (497) | pliers (763)
potters tools (3) | propulsion and energy (6,296) | punches (50) | rules (502) | screwdrivers (610) | specialty machines (3,003) | specialty tools (1,821) | stoneworking (157)
structures (128) | tool making (470) | trade specific (6,028) | transportation (1,175) | water distribution systems (257) | woodworking machines (15,663) | woodworking tools (4,193) | work holding (1,668)
wrenches (6,161)

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