Tamiya 51631 3x12mm Steel Countersunk Hex Head Screws (10 Pcs.). Tamiya 3x12mm Steel Countersunk Hex Head Screws (10 Pcs.)., Part No's. 51631 (SP-1631 & 9805778 & 19805778) These are spare hex head screws used in Tamiya R/C cars.
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