BS 4395-1 PDF


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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High-strength hexagon bolts with large widths across flats for structural bolting Suppliers 2.

It was originally intended to specify ISO strength Grade 8. Only 10 be uscd for the lighter type of construction whcre practical conditions such as material thickness do not Warrant the usage of a larger slze bolt than M The Red document status indicator indicates that the document is an old version The document has likely been withdrawn by the publisher, also the meta data presented here may be out of date as it is no longer being maintained by the editorial teams at NBS.

The bearing face shall be machined or have a surface equal to that produced by machining. Heavy hex structural bolts. It is financed by subscriptions from firms, trade associations, professional institutions andother bodies interested bw its work, by a Government grant and by the sale of its publications.

This standard makes reference to the following British Standards: Radius under head r 43395-1 of head k Min.

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Part 2, ‘ Additional tables Tor SI conversions ‘. This does not preclude the free use, in the course of implementing the standard, of necessary details such as symbols, and size, type or grade designations. Free cutting steel shall not be used. The impression of the indenter shall be applied either on the top of the head or to the centre position of the end of the bolt, after approximately 4395.


Test Programme 30 E. BS – Bolts S High-strength structural bolting saaemblies for preloading-Part 4: Large hex bolts for structural bolting with large width across flats – short thread. The bearing surface of the nut shall be machined or haveasurfaceequal to thatproduced by machining.

The shank diameter shall be capable of acceptance by a ring 439-51 having an internal diameter equal to the maximum shank diameter as specified in Column 2, Table 5 and subject to a tolerance of plus 0. Suitability test for preloading Withdrawn. NOTE 2 Although the mechanical requirements specified in this standard are in metric technical units i. Heavy Hex Head Configurations.

It also seems unlikely that a metric version of BS 4 43395-1 in any way change the flange angles, and there appears to be justification for retaining them as at present, since ISO is currently considering the adoption of structural steel sections covered by BS 4. The maximum and minimum diameters of the unthreaded portion of the shank of the be shall be in accordance with dimensions given in Table 5, Columns 2 and 3495-1.

Bolts that are too short for rninirnurn thread length shall be threaded as near to the head as possible, providing the radius specified in Table 5 is maintained. Their committees work with the manufacturing and service industries, government, businesses and consumers to facilitate the production of British, European and International standards.

The BS Yearbook may be consulted in many public libraries and sirnilar institutions.

BS 4395-1-1969 Metric high strength large hexagon head bolts

Metric Heavy Hex Head Bolts. Scale 38 to 45 HRC. BS’ High strength friction grip bolts for structural enginaring ‘, Part 1, ‘ General grade bolts ‘.

The form of thread and diameters and associated pitches for general grade metric high strength nuts shall be in accordance with BS 4935-1 following is the text of the policy statement: This minor deviation was justified by the committee on the grounds that these products were not general purpose bolts and assuch, it was feltdesirable to specify a maximum transition diameter consistent with their specialized function.


BSI offers members an individual updating service called PLUS which 43395-1 that subscribers automatically receive the latest editions of standards. Standard Specification for structural bolts,steel,heat treated MPa minmum tensile strength metric. In the case of the oxygen processes the maximum content of nitrogen shall not exceed 0.

Free cutting steel shall not be used. System HV-Hexagon bolt with large width across flats and nut assemblies. The standard nominal lengths are given in Appendix F, together with preferred size combinations of diameter and length.

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Although it is appreciated that some of those sections of industry already using ISO inch Unified screw threads may find it necessary, for various reasons, to continue with their use for some time, Whitworth and BA threads should be superseded by ISO metric threads in preference to an intermediate change b ISO inch threads.

The Brinell hardness test shall be performed in accordance with the requircrncnts of BS The bearing surface of the nut shall be square to 43955-1 axis of the thread of the nut within the tolerances given in Column 11, Table 8. The demands on the Services of the Institution are steadily increasing and can only be met if continuing and increased financial Support is provided. Boulons de serrage a friction a haute resistance et ecrous et rondelles correspondants pour genie structural.

For nuts it is only necessary to specify the nominal diameter and standard number, e. NOTE 3 Based on