IKEA assembly screws (Thatto Heath WA9)

Bit of a long shot this, but we have ordered a flat-pack item online (from amazon but sourced from some place in China) and it is missing these type of screws. I know IKEA stuff uses them but before I go to Warrington to try and get some I'd like to try one or two in the assembly to see if they are the correct fit. If you are throwing out any old IKEA stuff in bits I'd be very grateful if you could just remove these screws if it uses them so I can "try before I buy".