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STN is a protected designation of Slovak national technical standards.
Centre drills. Technical requirements
WITHDRAWN published on 1.2.1980
Selected format:60° centre drills. Shape A. Basic dimensions
Standard published on 1.9.1979
Selected format:60° centre drills. Shape B. Basic dimensions
Standard published on 1.9.1979
Selected format:60° left hand centre drills. Shape A. Basic dimensions
Standard published on 1.9.1979
Selected format:60 degrees centre drills. Form R. Basic dimensions
WITHDRAWN published on 1.9.1979
Selected format:Centre drills for centre holes with radius form. Type R
WITHDRAWN published on 1.8.1996
Selected format:60° left hand centre drills. Form R. Basic dimensions
Standard published on 1.9.1979
Selected format:Spot drills
WITHDRAWN published on 1.1.1999
Selected format:Parallel shank twist drills. Medium series. Basic parameters
Standard published on 1.5.1988
Selected format:Parallel shank twist drills with 40° helix. Medium series. Basic dimensions
WITHDRAWN published on 1.2.1983
Selected format:Latest update: 2026-07-06 (Number of items: 2 286 164)
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