British Standard Fine (BSF) is a screw thread form, as a fine-pitch alternative to British Standard Whitworth (BSW) thread.It was used for steel bolts and nuts on and in much of Britain's machinery, including cars, prior to adoption of Unified, and later Metric, standards. For highly stressed conditions, especially in motorcycles, a finer thread, British Standard Cycle (BSC), was used as well. BSF was developed by R. E. B. Crompton, and his assistant George Field. BSF threads use the 55 degree Whitworth thread form. It was introduced by the British Engineering Standards Association in 1908.
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| - Feingewinde (de)
- British Standard Fine (en)
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| - Eine Schraube (oder eine Mutter) mit Feingewinde hat im Vergleich zum Regelgewinde ein engeres Gewindeprofil. Zur Unterscheidung wird es zusätzlich zum Außendurchmesser mit dem Maß seiner – ebenfalls kleineren – Steigung gekennzeichnet. Beispielsweise hat das Regelgewinde M 20 eine Steigung von 2,5 mm. Feingewinde mit gleichem Außendurchmesser von 20 mm sind M 20 × 2; M 20 × 1,5 (siehe Abbildung); M 20 × 1 oder mit noch kleinerer Steigung (in Frage kommen alle normierten Steigungs-Maße). (de)
- British Standard Fine (BSF) is a screw thread form, as a fine-pitch alternative to British Standard Whitworth (BSW) thread.It was used for steel bolts and nuts on and in much of Britain's machinery, including cars, prior to adoption of Unified, and later Metric, standards. For highly stressed conditions, especially in motorcycles, a finer thread, British Standard Cycle (BSC), was used as well. BSF was developed by R. E. B. Crompton, and his assistant George Field. BSF threads use the 55 degree Whitworth thread form. It was introduced by the British Engineering Standards Association in 1908. (en)
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| - British Standard Fine (BSF) is a screw thread form, as a fine-pitch alternative to British Standard Whitworth (BSW) thread.It was used for steel bolts and nuts on and in much of Britain's machinery, including cars, prior to adoption of Unified, and later Metric, standards. For highly stressed conditions, especially in motorcycles, a finer thread, British Standard Cycle (BSC), was used as well. BSF was developed by R. E. B. Crompton, and his assistant George Field. BSF threads use the 55 degree Whitworth thread form. It was introduced by the British Engineering Standards Association in 1908. The table provides BSF sizes, the threads per inch and spanner jaw sizes. The BSC column indicates where BSF and BSC threads match. The table shows suitable tapping drill sizes. Uncommon sizes are shown in italics. (en)
- Eine Schraube (oder eine Mutter) mit Feingewinde hat im Vergleich zum Regelgewinde ein engeres Gewindeprofil. Zur Unterscheidung wird es zusätzlich zum Außendurchmesser mit dem Maß seiner – ebenfalls kleineren – Steigung gekennzeichnet. Beispielsweise hat das Regelgewinde M 20 eine Steigung von 2,5 mm. Feingewinde mit gleichem Außendurchmesser von 20 mm sind M 20 × 2; M 20 × 1,5 (siehe Abbildung); M 20 × 1 oder mit noch kleinerer Steigung (in Frage kommen alle normierten Steigungs-Maße). Feingewinde findet man beim metrischen ISO-Gewinde und beim Whitworth-Gewinde, sowie beim amerikanischen Unified Thread Standard. (de)
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