Version:
Surface vaporised for reduced edge build-up.
Tolerance class ISO 228 + 0.
05 mm.
HSS-E Application:
For Whitworth parallel pipe threads DIN-ISO 228/1 (threads that do not form a seal within the connection).
For components which are galvanised after threading or shrink slightly when hardened.
Recommendation:
We recommend deviating from the DIN data (see table) by drilling the tapping hole ⌀ 0.
05 mm larger.
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