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The following lists the key subject areas for this British Standards module.
Click the links to view the associated British Standards for each area.
Special screw threads , Screw threads & fasteners ( Module 11 )

BS 4084:1978Specification for UNJ threads, with controlled root radius for aerospace: inch series
BS 4185-10:1977Machine tool components. Trapezoidal threads for lead and feed screw assemblies
BS 7277:1990* ISO 1478:1983Specification for tapping screw threads
BS 811:1950Specification for cycle (B.S.C.) threads (formerly known as C.E.I. threads)
BS 919-1:1960Specification for screw gauge limits and tolerances. Gauges for screw threads of Unified form
BS 919-1:2007Screw gauge limits and tolerances. Specification for gauges for screw threads of unified form
BS 919-4:1964Specification for screw gauge limits and tolerances. Limits of size for gauges for screw threads of Unified form diameters 1/4 in and larger
BS 93:1951Specification for British Association (B.A.) screw threads with tolerances for sizes 0 B.A. to 16 B.A
BS 93:2008British Association (B.A.) screw threads. Requirements
BS EN 10226-1:2004Pipe threads where pressure tight joints are made on the threads. Taper external threads and parallel internal threads. Dimensions, tolerances and designation
BS EN 10226-2:2005Pipe threads where pressure tight joints are made on the threads. Taper external threads and taper internal threads. Dimensions, tolerances and designation
BS EN 10226-3:2005Pipe threads where pressure-tight joints are made on the threads. Verification by means of limit gauges
BS EN ISO 11116-1:1999Gas cylinders. 17E taper thread for connection of valves to gas cylinders. Specifications
BS EN ISO 11116-2:1999Gas cylinders. 17E taper thread for connection of valves to gas cylinders. Inspection gauges
BS EN ISO 1478:1995Tapping screw threads
BS EN ISO 1478:2000Tapping screw thread
BS EN ISO 15245-1:2001Gas cylinders. Parallel threads for connection of valves to gas cylinders. Specification
BS EN ISO 15245-2:2001Gas cylinders. Parallel threads for connection of valves to gas cylinders. Gauge inspection
BS EN ISO 228-1:2003Pipe threads where pressure-tight joints are not made on the threads. Dimensions, tolerances and designation
BS EN ISO 228-2:2003Pipe threads where pressure-tight joints are not made on the threads. Verification by means of limit gauges
BS ISO 1501:2009ISO miniature screw threads
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