ข้อมูลDowels or other devices fastened in walls or the like by inserting them in holes made therein for that purpose (nails F16B0015000000; self-locking pins or bolts in general, stud-and-socket releasable fastenings F16B0021000000; dowels or bolts for railroad sleepers E01B0009000000; means for anchoring structural elements or bulkheads specially adapted to foundation engineering E02D0005740000; bolts or dowels used while laying bricks or casting concrete E04B0001380000; setting anchoring bolts in shafts, tunnels or galleries E21D0020000000; anchoring bolts for shafts, tunnels or galleries E21D0021000000)

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