Sims 3:0x02DC343F

OBJK (Object Key)

Code:
  DWORD version
  DWORD TGI offset
  DWORD TGI size
  BYTE count1
  --repeat count1 times
    DWORD hash

  //key entries
  BYTE count2
  --repeat count2 times
      DWORD length
      STRING[length]
      BYTE control code for data
      {Data}
  BYTE
  DWORD count3
  --repeat count3 times
      TGI64  

String entries in the second repetition I've seen are:
scriptClass
footprintKey
modelKey
steeringInstance
simOutfitKey

the control codes I've seen are:
(00): DWORD(length) STRING[length]
(01): DWORD index to TGI64 at end
(02): DWORD index to TGI64 at end
(03): DWORD(length) STRING[length]


------------------------------
the IDs for the first repetition

    kAnimationComponent = 0xee17c6ad,
    kEffectComponent = 0x80d91e9e,
    kFootprintComponent = 0xc807312a,
    kLightingComponent = 0xda6c50fd,
    kLocationComponent = 0x461922c8,
    kLotObjectComponent = 0x6693c8b3,
    kModelComponent = 0x2954e734,
    kPhysicsComponent = 0x1a8feb14,
    kSacsComponent = 0x3ae9a8e7,
    kScriptComponent = 0x23177498,
    kSimComponent = 0x22706efa,
    kSlotComponent = 0x2ef1e401,
    kSteeringComponent = 0x61bd317c,
    kTransformComponent = 0x54cb7ebb,
    kTreeComponent = 0xc602cd31,
    kVisualStateComponent = 0x50b3d17c

(analysis by atavera, I think)