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.

Author: Muhn Zulujinn
Country: Burma
Language: English (Spanish)
Genre: Education
Published (Last): 11 August 2014
Pages: 10
PDF File Size: 18.55 Mb
ePub File Size: 11.42 Mb
ISBN: 900-8-21227-396-5
Downloads: 37747
Price: Free* [*Free Regsitration Required]
Uploader: Nem

The Vickers hardness test shall be performed in accordance with the requirements of BS Summary of pages This document comprises a front cover, an inside front cover, pages i to vi, pages 1 to 19 and a back cover.

bs – Free Download PDF

This projection shall be rounded to 4359-1 sharp e dp. We use cookies to make our website easier to use and to better understand your needs. The proof load is applied axially to the bolt in a normal tensile testing machine see Figure 8. The screw threads shall be made to the tolerances for medium class of fit 6H as specified in BS Each test selected from Appendix D shall be carried out three times per batch of bolts.

Recommendations giving guidance in the use of this form of fastener are given in BS. NUTS 15 15 15 15 16 16 4. The proof load is applied axially to the bolt in a normal tensile testing machine See Fig. Part 1BS High-strength structural bolting assemblies for preloading-Part 4: Method for Rockwell hardness test.

Testing of mechanical properties of steel nuts 28 D. Marking of nuts 4. Boulons de serrage a friction a haute resistance et ecrous et rondelles correspondants pour genie structural.

bs-4395-1-1969

It was felt by the committee that economic considerations were important in this respect and might prove paramount for users intending to change over to metric products. A gauge recommended for carrying out this test together with the manner in which the test is to be undertaken is shown in Appendix E. The tolerances on bolt 4359-1 lengths shall be plus two pitches for all diameters. Hexagon head bolts with hexagon head nuts for steel vs Suppliers 1.

  MANUAL BANKSPHERE PDF

If these tests are required, this should be clearly stated in the enquiry, order or contract. Hardness values arc given f c r guidana only. BSI offers members an individual updating service called PLUS which ensures that subscribers automatically receive the latest editions of standards.

Subscribing members of BSI are kept up to date with standards developments and receive substantial discounts on the purchase price of standards. For nuts it is only necessary Standard number, e. The thread shall be tolerance class 4hexcept that the major diarneter shall be equal to the minimurn rnajor diameter for class 4h with a plus tolerance of one quarter of the 6g major diameter tolerence.

General Grade BS The bearing surface of the nut shall be square to the axis of the thread of the nut within the tolerances given in Column 11, Table 8. They shall also be marked with the Ietter ‘ M ‘ see Fig. It is important to ensure that these bolts are correctly used if satisfactory results are to be obtained. O The manufacturer shall take the necessary steps to ensure that the conditions relating to dimensions and tests laid down in this standard are fulfilled.

Recommendations giving guidance in the use of this form of fastener are given in BS 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.

BS 4395-1:1969

4359-1 Such wrenching is permissible providing it is restricted to a half turn and the nut is then removable by the fingers following initial loosening. Only 10 be uscd for the lighter type of construction whcre practical 43951 such as material thickness do not Warrant the usage of a larger slze bolt than M The manner in which tests are to be carried out is specified in Appendix B. System HV – hexagon fit bolt and nut assemblies. The impression should be applied either on the top of the head or to the centre position of the end of the bolt, after approximately 0.

  EVERSTONE RPG PDF

Learn more about the cookies we use and how to change your settings. The following is the text of the policy Statement: System HR – countersunk head bolt and nut assemblies. British industries on a broadening front should adopt metric units sector by sector, until that System can become in time the primary system of weights and measures for the country as a whole.

Radius under head r Thickness of head k Min.

BS Metric high strength large hexagon head bolts

The extension of the bolt shall be measured, at its true centre line, with a bw instrument. In carrying out its work the Institution endeavours to ensure adequate representation of all viewpoints. If nuts of 30 mm diameter or over cannot be subjected to the proof load bss, due to lack of suitable equiprnent, they shall be subject to a hardness test and their hardness shall not be outside the following ranges: When clearance d e s it necessary, plain washers may be clipped on one side at a point not closer than seveneighths of the bolt diameter from the centre of the washer.

A batch shall consist of the number of pieces shown in Table 9.