hexagonal bolts (unthreaded and blanks), nuts and socket screws to the following materials: GENERAL ENGINEERING GRADES: BS & BS ( , BS ISO metric black hexagon bolts_screws_nuts caite.info BS Page Table 11 — Dimensions of ISO metric hexagon head bolts. Free download British standard (Pdf file): BS ISO metric black hexagon bolts, screws and nuts - Specification from the Largest Open Online Library.
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Home; BS Printed Edition + PDF; Immediate download; $; Add to Cart BS EN ISO BS EN ISO. STDeBSI BS ENGL 9 lb24bb9 = . BS Tables 14 and 18 (mechanical properties for bolts and screws) and. BS (英标螺丝标准) - BS BSI Standards Publication Buying standards You can buy and download PDF versions of BSI.
Al-hadi Aliakbar. Requirements in this standard are drafted in accordance with Rules for the structure and drafting of UK standards, subclause J. Overview Product Details What is this standard about? Related titles. Find Similar Items This product falls into the following categories. This standard gives clear guidelines which will help those making, selling and using black hexagon bolts, screws and nuts to achieve greater business efficiency and product interoperability. Fasteners — Electroplated coatings.
A list of organizations represented on this committee can be obtained on request to its secretary. Relationship with other publications This British Standard should be read in conjunction with BS EN ISO as it contains tables that reflect up-to-date best practice for mechanical properties of bolts. Higher proof load values have been allocated to the revised property classes in BS EN ISO in order to ensure that fracture of the bolt generally occurs in the case of overloading.
Nuts in accordance with this standard cannot be fully loaded with sufficient assurance up to the yield point of the appropriate bolt, or beyond this, without the possibility of the nut thread being stripped, and for this reason it is essential that new designs of nuts for use with BS bolts and studs conforming to this standard conform to BS EN ISO In order to differentiate nuts that conform to this British standard from that those that conform to BS EN ISO vertical bars have been added to the symbols for strength grade designations e.
It has been assumed in the preparation of this British Standard that the execution of its provisions will be entrusted to appropriately qualified and experienced people, for whose use it has been produced. Presentational conventions The provisions of this standard are presented in roman i.
Commentary, explanation and general informative material is presented in smaller italic type, and does not constitute a normative element. Requirements in this standard are drafted in accordance with Rules for the structure and drafting of UK standards, subclause J. This means that only those products that are capable of passing the specified test will be deemed to conform to this standard.
Contractual and legal considerations This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. Compliance with a British Standard cannot confer immunity from legal obligations.
Dimensional requirements are included for bolts, screws and nuts finished black all over and for those which have partially machined finishes.
NOTE 1 Fasteners the term used when bolts, screws and nuts are considered all together that conform to the requirements of this standard are evaluated at this ambient temperature range. NOTE 3 Nuts in accordance with this standard cannot be fully loaded with sufficient assurance up to the yield point of the appropriate bolt, or beyond this, without the possibility of the nut thread being stripped, and for this reason it is essential that new designs of nuts for use with BS bolts and studs conforming to this standard conform to BS EN ISO NOTE 4 Nuts with an effective height of less than 0.
The dimensional requirements of this British Standard are also applicable to non-ferrous and stainless steel bolts, screws and nuts. Information on strength grade designation system for steel bolts and screws can be found in Annex D. The term implies the comparatively wider tolerances to which these products are usually made.
NOTE 6 In addition to the definitive requirements, this standard also requires the items detailed in Clause 3 to be documented. For compliance with this standard, both the definitive requirements and the documented items have to be met. For dated references, only the edition cited applies.
For undated references, the latest edition of the referenced document including any amendments applies. BS , Limits and fits for engineering — Part 1: Specification for selected limits of size BS , Coatings on metal fasteners — Part 6: Specification for hot dipped galvanized coatings?
Limits of sizes for internal screw threads to mate with hot-dip galvanized external screw threads with maximum size of tolerance position h before galvanizing 3 Information and requirements to be agreed and documented 3.
BS ; the strength grade symbol; 2? Screws faced under head only, 8 mm in diameter, 20 mm long, strength grade 4.
Black nuts 24 mm in diameter, galvanized, strength grade 4, would be designated: NOTE Special requirements not covered by this British Standard are subject to agreement between the purchaser and the manufacturer. The user options referred to in the standard, relating to the thread length see Clause 8 and the drilling of split pin holes see Clause 13 are set out by the purchaser in their enquiry or order. For compliance with the standard both the definitive requirements specified throughout the standard and the following documented items shall be satisfied.
NOTE Preferred nominal lengths of bolts and screws, in association with diameters, are given in Table 13a and Table 13b. When bolts are made with rolled threads, the lead formed at the end of the bolt or screw by the thread rolling operation provides the necessary chamfer to the end so no other machining operation is necessary, and the end shall be reasonably square with the centre line of the shank.
See Figure 1 and Figure 2.
Figure 3 and Figure 4 give the explanation for those dimensions. Overview Product Details What is this standard about? Who is this standard for? Manufacturers and suppliers of black hexagon bolts, screws and nuts Users of black hexagon bolts, screws and nuts Why should you use this standard?
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