• Fundamental information about threaded fasteners such as definition of screw thread terms, nomenclature of threaded fasteners, ISO Metric screw threads (as per ISO 68-1, ISO 262 and ISO 965), Unified Inch screw threads (as per ANSI/ASME B1.1), heat treatments for fasteners, manufacturing operations, surface discontinuities, electroplating, hot dip galvanizing and general useful information on threaded fasteners is given in the following booklet.

    Fundamentals of Threaded Fasteners

    Information about mechanical properties and identification markings for threaded fasteners as per the International Organization for Standardization (ISO) specifications for the metric fasteners and as per American Society for Testing and Materials (ASTM) and SAE International (Society of Automotive Engineers) specifications for the imperial fasteners is given in the following booklet. Information about mechanical properties and selection of fastener material is also given in the booklet.

    Mechanical Properties and Identification Markings for Threaded Fasteners

    Most industrial threaded fasteners are covered by two basic standards: one for materials and properties called materials standards; the other, for dimensions and tolerances called product standards. Information about product standards for industrial threaded fasteners is given in the following booklet.

    Product (Dimensions and Tolerances) Standards for Threaded Fasteners

    A bolted joint is designed considering that when the bolts are preloaded as designed, the joint will fulfil its designed function. Hence, equally important to use of the designed bolts in a bolted joint in determining joint performance is the assembly procedure. In view of this, information about installation/tightening of threaded fasteners (nuts and bolts) and locking methods for threaded fasteners is given in the following booklet. During maintenance of threaded fasteners, sometimes it is required to use helical coil inserts and tap threads. Hence, information about helical coil inserts, tapping of screw thread and other useful information for maintenance is also given in the booklet.

    Installation and Maintenance of Threaded Fasteners (Nuts and Bolts)

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