FIELD: drilling members for fasteners. SUBSTANCE: plate-type drilling member 4 for self-drilling fasteners 1 has two external cutting edges with two recesses (7, 8) located on either side of drilling member in parallel with cutting edges. Cut (9, 10) with cutting edge (11, 12) shifted backward forming stepped shape of drill is made in zone of each front cutting edges (5, 6). cuts (9, 10) are made in zone of recesses (7, 8). EFFECT: possibility of drilling perfectly round holes of small diameter. 6 cl, 6 dwg
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