Bsi bs en 01665 1997 (2008)

30163357 pdf BRITISH STANDARD BS EN 1665 1997 Incorporating corrigenda nos 1 and 2 Hexagon bolts with flange — Heavy series The European Standard EN 1665 1997 has the status of a British Standard ICS[.]

BRITISH STANDARD BS EN

1665:1997

Incorporating corrigenda nos 1 and 2

Hexagon bolts with

flange —

Heavy series

The European Standard EN 1665:1997 has the status of a

British Standard

ICS 21.060.10

Confirmed May 2008

This British Standard was

published under the authority of

the Standards Committee and

comes into effect

on 15 September 1997

© BSI 2007

The following BSI references

relate to the work on this

standard:

This British Standard is the UK implementation of EN 1665:1997, incorporating corrigenda March 1998 and February 2007

The start and finish of text introduced or altered by corrigendum is indicated

in the text by tags ˜™ Text altered by CEN corrigendum March 1998 is indicated by ˆ‰ and text altered by CEN corrigendum February 2007 is indicated in the text by Š‹

The UK participation in its preparation was entrusted to Technical Committee FME/9, Bolts, nuts and accessories

A list of organizations represented on this committee can be obtained on request to its secretary

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.

Amendments issued since publication

10158

Corrigendum No 1 December 1998 See national foreword 17148

Corrigendum No 2 31 May 2007 See national foreword

EUROPEAN STANDARD

NORME EUROPÉENNE

EUROPÄISCHE NORM

EN 1665 May 1997

ICS 21.060.10 Incorporates corrigenda March 1998

Descriptors: Fasteners, screws, hexagonal head screws, dimensions, dimensional tolerances, characteristics, verification, designation

English version

Hexagon bolts with flange —

Heavy series

Vis à tête hexagonale à embase

cylindro-tronconique —

Série large

Sechskantschrauben mit Flansch — Schwere Reihe

This European Standard was approved by CEN on 1997-04-03 CEN members

are bound to comply with the CEN/CENELEC Internal Regulations which

stipulate the conditions for giving this European Standard the status of a

national standard without any alteration

Up-to-date lists and bibliographical references concerning such national

standards may be obtained on application to the Central Secretariat or to any

CEN member

This European Standard exists in three official versions (English, French,

German) A version in any other language made by translation under the

responsibility of a CEN member into its own language and notified to the

Central Secretariat has the same status as the official versions

CEN members are the national standards bodies of Austria, Belgium,

Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland,

Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden,

Switzerland and United Kingdom

CEN

European Committee for Standardization Comité Européen de Normalisation Europäisches Komitee für Normung

Central Secretariat: rue de Stassart 36, B-1050 Brussels

© 1998 CEN — All rights of exploitation in any form and by any means reserved worldwide for CEN national Members

Ref No EN 1665:1997 E

and February 2007

This European Standard has been prepared by

Technical Committee CEN/TC 185, Threaded and

non-threaded mechanical fasteners and accessories,

the secretariat of which is held by DIN

This European Standard shall be given the status of

a national standard, either by publication of an

identical text or by endorsement, at the latest by

November 1997, and conflicting national standards

shall be withdrawn at the latest by November 1997

According to the CEN/CENELEC Internal

Regulations, the national standards organizations

of Austria, Belgium, Czech Republic, Denmark,

Finland, France, Germany, Greece, Iceland,

Ireland, Italy, Luxembourg, Netherlands, Norway,

Portugal, Spain, Sweden, Switzerland and United

Kingdom

Contents

Page

4 Requirements and reference European

Annex A (normative) Gauging of hexagon

Figure 1 — Hexagon bolt with flange —

Figure 2 — Hexagon bolt with flange — Reduced shank, type R (upon request) 4 Figure 3 — Hexagon bolt with flange —

Underhead configuration (bearing area) 4

EN 1665:1997

3

1 Scope

This European Standard specifies characteristics of

hexagon bolts with flange, heavy series, with

threads from M5 up to and including M20 and with

property classes 8.8, 10.9 and A2-70

2 Normative references

This European Standard incorporates by dated or

undated reference, provisions from other

publications These normative references are cited

at the appropriate places in the text and the

publications are listed hereafter For dated

references, subsequent amendments to or revisions

of any of these publications apply to this European

Standard only when incorporated in it by

amendment or revision For undated references the

latest edition of the publication referred to applies

EN 26157-3, Fasteners — Surface discontinuities —

Part 3: Bolts, screws and studs for special

requirements

(ISO 6157-3:1988)

prEN ISO 898-1, Mechanical properties of

fasteners — Part 1: Bolts, screws and studs

(ISO/DIS 898-1:1996)

prEN ISO 3506-1, Mechanical properties of

corrosion-resistant stainless-steel fasteners —

Part 1: Bolts, screws and studs

(ISO/DIS 3506-1:1995)

prEN ISO 4042, Fasteners — Electroplated coatings

(ISO/DIS 4042:1996)

prEN ISO 4753, Fasteners — Ends of parts with

external metric ISO thread

(ISO/DIS 4753:1997)

prEN ISO 4759-1, Tolerances for fasteners —

Part 1: Bolts, screws, studs and nuts — Product grades A, B and C

(ISO/DIS 4759-1:1997)

ISO 724, ISO general purpose metric screw

threads — Basic dimensions

ISO 888, Bolts, screw and studs — Nominal lengths,

and thread lengths for general purpose bolts

ISO 965-2, ISO general purpose metric screw

threads — Tolerances — Part 2: Limits of sizes for general purpose bolt and nut threads — Medium quality

ISO 3269, Fasteners — Acceptance inspection ISO 8992, Fasteners — General requirements for

bolts, screws, studs and nuts

3 Dimensions

Dimensions shall be in accordance with Figure 1 to Figure 3 and Table 1

NOTE Symbols and designations of dimensions are specified in

EN 20225.

1) The top of the head shall be either full form or indented at the manufacturer’s option and shall be either chamfered or rounded The minimum diameter of the chamfer circle or start of rounding shall be the maximum width across flats minus 15 % If the top of the head is indented, the periphery may be rounded.

2) Edge contour optional.

3) Chamfered end (see prEN ISO 4753).

4) ¶ = 15° to 30°

5) kw is the wrenching height; see the note to Table 1.

6) Incomplete thread u < 2P.

Figure 1 — Hexagon bolt with flange — Full shank (standard type)

© BSI 2007

Š

‹

other dimensions, see Figure 1

a) Rounded or chamfered or conical.

b) d2 is approximately equal to the pitch diameter (rolling diameter).

Figure 2 — Hexagon bolt with flange — Reduced shank, type R (upon request)

1) c is measured at dw min.

2) $ = 15° to 25°

3) Maximum and minimum underhead fillet.

4) Junction of fillet with bearing surface to be a smooth blend.

Figure 3 — Hexagon bolt with flange — Underhead configuration (bearing area)

Š

‹

EN 1665:1997

5

Table 1

Dimensions in millimetres

c 16 18 22 26 30 34 38 46

© BSI 2007

Table 1

nom min max min max min max min max min max min max min max min max min max.

10 9,71 10,29

12 11,65 12,35

16 15,65 16,35

20 19,58 20,42

30 29,58 30,42 10 14 7 12

40 39,5 40,5 20 24 17 22 11,75 18 6,5 14

45 44,5 45,5 25 29 22 27 16,75 23 11,5 19 6,25 15

NOTE If the product passes the gauging in Annex A, the requirements for dimensions e amd Kw are satisfied.

a The size in parentheses should be avoided if possible.

c For lengths lnom< 125 mm.

d For lengths 125 mm < lnom< 200 mm.

e For lengths lnom > 200 mm.

f Radius r2 applies both at the corners and at the flats of the hexagon.

g Screws with lengths shown above the continuous thick line are threaded to head.

h Reduced shank type (type R) only below the dashed line.

i lg is the minimum grip length.

EN 1665:1997

7

4 Requirements and reference

European or international Standards

The requirements given in Table 2 apply

If, in special cases, specifications other than those

listed in this European Standard are required, they

shall be selected, from existing European or

international Standards, for example ISO 724,

ISO 888, prEN ISO 898-1, ISO 965-2,

prEN ISO 3506-1

5 Designation

Example 1 Designation of a hexagon bolt with flange, heavy series, with thread M12, nominal

length l = 80 mm, type F or U at the option of the

manufacturer, and property class 8.8:

Hexagon bolt EN 1665 – M12 × 80 – 8.8

Example 2 Designation of a hexagon bolt with flange, heavy series, with thread M12, nominal

length l = 80 mm, type F, and property class 8.8:

Hexagon bolt EN 1665 – M12 × 80–F – 8.8

If, in special cases, a hexagon bolt with flange, heavy series, with reduced shank is required, the letter R shall be included in the designation

Example 3 Designation of a hexagon bolt with flange, heavy series, with thread M12, nominal

length l = 80 mm, type F or U at the option of the

manufacturer, with reduced shank (R) and property class 8.8:

Hexagon bolt EN 1665 – M12 × 80– R — 8.8 Table 2

General requirements International standard ISO 8992

International standards ISO 724, ISO 965-2

Mechanical properties Property class 8.8, 10.9 A2-70

European Standards prEN ISO 898-1 prEN ISO 3506-1

Tolerances Product grade A

European Standard prEN ISO 4759-1

(thermic or chemical) Requirements for electroplating are covered in

prEN ISO 4042

Plain

If different electroplating requirements are desired or if requirements are needed for other finishes, they should be negotiated between customer and supplier

Limits for surface discontinuities are covered in EN 26157-3

Acceptability For acceptance inspection ISO 3269 applies

© BSI 2007

Annex A (normative)

Gauging of hexagon flange heads

The head shall be gauged using two ring gauges, A and B, to demonstrate the coincidental acceptability of hexagon height, wrenching height, corner fill and width across corners Gauge A shall be placed over the hexagon and shall sit on the flange Gauge B shall be placed on the top of the head normal to the bolt axis The two gauges shall not be in contact

Table A.1

1 Gauge A

2 Gauge B

NOTE Wa,min = etheoretical

Wb,max = emin – 0,01 mm

Ta,max = kw,min

Figure A.1

Dimensions in millimetres

Thread

ˆ

‰

blank

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