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BSF Thread Countersunk Socket Screws
We supply BSF (British Standard Fine) thread countersunk socket screws in plain and high tensile steel for engineering and maintenance applications. Designed to sit flush with the surface, these screws provide secure fastening in imperial fine thread assemblies.
Available in both part and full threaded configurations, our BSF countersunk socket screws are suitable for machinery, restoration and specialist engineering uses. Supplied in a range of sizes with fast UK delivery.