BS ISO 8177:2015 pdf free.Aerospace一Omega clamps (saddle clamps) for fluid systems一Dimensions.
BS ISO 8177 specifies maximum and minimum dimensions for omega clamps (saddle clamps) installed by means of two bolts with nominal diameters of 5 mm.
The specified dimensions define a dimensional envelope. This International Standard shall not be considered as an inter-changeability standard. The tolerances for each type of clamp are to be defined in the parts standards drawings.
2 Normative references
The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
ISO 6771. Aerospace — Fluid systems and components — Pressure and temperature classifications
3 Field of application
These clamps are intended for the installation, support and guiding of rigid tubing or hose assemblies used in aerospace equipment.
NOTE Omega clamps (saddle clamps) may also be used for other equipment, e.g. electrical cables or looms.
4 Field of use
Omega clamps (saddle clamps) are classified into six types according to the temperature range in which they are intended to be used (see Table 1).
5 Description
The omega clamp (saddle clamp) is a “multi-component”-type clamp. It consists of a top band and a base contoured to the tubing. Mounting holes in the top band align with holes in the base on installation. This clamp is designed for single tubing installation, and can be provided as a metallic support only or with a plastomer or elastomer cushion or sheathing, as specified in the parts standard.
6 Dimensions
The omega clamp (saddle clamp) shall be in accordance with the figure and Table 2.
The shape of clamp illustrated in the figure does not purport to be the exact shape of the manufactured clamp. Table 2 only specifies those dimensions required to define the maximum envelope and the proper location of the tube relative to the mounting plane and fastening points.BS ISO 8177 pdf free download.