A bifurcated rivet is a mechanical fastener consisting of a split shaft with a head. BS 4894 discusses standards for bifurcated rivets for general purpose use. BS 4894 specifies the materials and dimensions for bifurcated rivets with shank diameters of 2 mm to 5 mm inclusive and with oval and 155° countersunk heads.
BS 4894 describes the use and application of rivets with different head styles. A choice of slot depths is given, a general-purpose slot depth for use when joining soft materials such as leather, cloth, paper and soft wood, and a shorter slot depth for use with harder materials such as hardwood and thin metal.
BS 4894 on bifurcated rivets is useful for:
Bifurcated rivets are used for the fastening together of unpierced leather, cloth, paper, card, wood and thin metal strips, and can fasten three strips of different materials under appropriate conditions. So long as the bifurcated legs are well spread, fastening is tolerant of clench quality, and the joint strength is related more to the strength of the materials being fastened.
BS 4894 provides you with the dimensions and tolerances of bifurcated rivets with head types: countersunk and oval. BS 4894 also provides you with characteristics and material requirements for bifurcated rivets.
Following guidelines provided in BS 4894 for bifurcated rivets, help you to produce and supply high-quality rivets with enhanced strength and durability to your customers. These customers will be able to use the bifurcated rivets safely.
BS 4894: 1993 supersedes BS 4894:1973, which is withdrawn. BS 4894:1993 includes some principal changes with respect to BS 4894:1973. These include: