BS Metric high strength large hexagon head bolts 英标BS BS BS Metric high. Weight Calculator Tolerance. BS Specification For High Strength Friction Grip Bolts And Associated Nuts And Washers For Structural Engineering – General Grade. BS High strength friction grip bolts and associated nuts and washers for structural engineering. Metric series. General grade (AMD ) ( AMD.
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The impression of the ball or cone shall be applied either on the top of the head or to the centre position of the end of the bolt, after approximately 0. Boulons de serrage a friction a haute resistance et ecrous et rondelles correspondants pour genie structural. It is financed by subscriptions from firms, trade associations, professional institutions andother bodies interested in its work, by a Government grant and by the sale of its publications.
Buying standards Orders for all BSI, international and foreign standards publications should be addressed to Customer Services. Users of British Standards are responsible for their correct application.
BSLimits and fits for engineering. Part ball or cone shall be applicd either’on the top of Position of thc c! Table 6 — Number of pieces comprising a batch of nuts Diameter of nut Number of pieces in batch 3.
Appendix E Recommended gauge for checking squareness of thread to face of nut See 3. When clearance makes it necessary, plain washers may be clipped on one side at a point not closer than seven-eighths of the bolt diameter from the centre of the washer.
The Institution is a non-profit-making concern. ES’ Method for Vickers hardness test ‘, Part 1. BSThread data and standard thread series.
The gs objects of the Institution as Set out in the Charter are to Co-Ordinate the efforts of Producers and Users forthe improvement, standardization and simplification of engineering and industrial materials; to simplify production and distribution; to eliminate the waste of time and material involved in the production of an unnecessary variety of Patterns 43395-1 sizes of articles forone and the Same purpose; to set up Standards of quality and dimensions, and to promote the general adoption of British Standards.
The tolerance on the nominal length shall be as given in Table 2. Hexagon bolts for structural bolting with large width across flats. You may find similar items within these categories by selecting from the choices below:.
Chamfering, facing and marking of b 2. BSTesting of metals. Flat round washers for use with high strength friction grip bolts shall be identified by the Provision of three nibs and an indented letter ‘ M ‘ as shown in Fig.
The following is the text of the policy statement: Metric Heavy Hex Head Bolts. BSMethod for Vickers hardness test. Length of bolts 2. For bolts the nominaldiameter shall also be given, e.
Subject the bolt to an axial load at a testing machine crosshead Speed free running not greater than 26 mm per minute, until fracture occurs. Membership of theInstitution is opem to British subjects, companies, technical and trade associations. Free cutting steel shall not sb used.
Standard Specification for 435-1 bolts,steel,heat treated MPa minmum tensile strength metric.
In response to orders for international standards, it is BSI policy to supply the BSI implementation of those that have been published as British Standards, unless otherwise requested. Methodfor Brinell hardness test.
BS HSFG bolts_百度文库
It is continental practice to maintain a constant tensile strength throughout the diameter range of threaded products, thus necessitating a change in chemical composition because of the increase in ruling section, whereas it is the American practice to maintain a generally constant chemical composition, which in practice leads to a reduction in the tensile strength over the diameter range.
A batch shall consist of the nurnber of pieces shown in Table 6. Heavy hex bolts Suppliers 2. In view of the world trend towards the metricSystem, and having particular regard to thedeclared UK national policy for its adoption, it is strongly recommended that British industry should adopt the ISO metric screw thread System. They shall be hardened by quenching in oil or water and shall then be tempered.
The manner in which tests are to be carried out is specified in Appendix B. This standard makes reference to the following British Standards: Any alternative method of use should be left to the responsibility of the engineer and should be noted on the appropriate drawings or documents, or both.
Wedge loading of fuu size bolt 27 BS This will be indicated in the amendment table on the inside front cover. The bearing surface of the nut shall be machined or have a surface equal to that produced by machining.