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1、BRITISH STANDARD BS 7349-2: 1993 Blind rivets with break mandrel Part 2: Specification for open end blind rivets Licensed Copy: London South Bank University, London South Bank University, Fri Dec 08 11:20:40 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 7349-2:1993 This British Standard, having been
2、 prepared under the direction of the General Mechanical Engineering Standards Policy Committee, was published under the authority of the Standards Board and comes into effect on 15 July 1993 BSI 08-1999 The following BSI references relate to the work on this standard: Committee reference GME/6 Draft
3、 for comment 89/72309 DC ISBN 0 580 19120 6 Committees responsible for this British Standard The preparation of this British Standard was entrusted by the General Mechanical Engineering Standards Policy Committee (GME/-) to Technical Committee GME/6, upon which the following bodies were represented:
4、 British Friction Materials Council British Industrial Fasteners Federation British Railways Board British Steel Industry British Steel Industry (Wire Section) Institution of Structural Engineers Ministry of Defence National Association of Fastener Stockholders Society of Motor Manufacturers and Tra
5、ders Limited Amendments issued since publication Amd. No.DateComments Licensed Copy: London South Bank University, London South Bank University, Fri Dec 08 11:20:40 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 7349-2:1993 BSI 08-1999i Contents Page Committees responsible Inside front cover Foreword
6、 ii 1Scope1 2Normative references1 3Definitions1 4Materials2 5Dimensions2 6Finish2 7Performance2 8General6 9Designation for the purpose of an enquiry or order6 Annex A (normative) Test methods to determine the shear and tensile loads of break mandrel open end blind rivets7 Annex B (informative) Appl
7、ication data10 Annex C (informative) Recommended hole sizes16 Figure 1 Dimensions of open end blind rivets3 Figure A.1 Test fixture for shear testing blind rivets7 Figure A.2 Test fixture for tensile testing blind rivets8 Figure B.1 Application data for protruding open end blind rivets10 Figure B.2
8、Application data for countersunk open end blind rivets10 Figure C.1 Enlarged alignment hole16 Table 1 Rivet body/mandrel material combinations2 Table 2 Dimensions of open end blind rivets3 Table 3 Mandrel diameters4 Table 4 Shear and tensile loads4 Table 5 Mandrel break loads5 Table A.1 Diameter of
9、holes for rivet tests7 Table B.1 Application data for protruding open end blind rivets: commercially pure aluminium body, material designation 0010 Table B.2 Application data for protruding open end blind rivets: aluminium alloy body, material designations 10, 11, 12, 14, 14A, 15, 16, 17, 18, 18A, 1
10、9 and 19A11 Table B.3 Application data for protruding open end blind rivets: copper body, material designations 20 and 2212 Table B.4 Application data for protruding open end blind rivets: steel body, material designation 3012 Table B.5 Application data for protruding open end blind rivets: nickel c
11、opper body, material designations 40 and 4213 Table B.6 Application data for protruding open end blind rivets: stainless steel body, material designations 50 and 5113 Table B.7 Application data for countersunk open end blind rivets: aluminium alloy body, material designations 10, 11, 12, 14, 14A, 15
12、, 16, 17, 18A, 19 and 19A14 Table B.8 Application data for countersunk open end blind rivets: steel body, material designation 3015 Table B.9 Application data for countersunk open end blind rivets: nickel copper body, material designations 40 and 4215 Table C.1 Recommended hole sizes16 List of refer
13、ences Inside back cover Licensed Copy: London South Bank University, London South Bank University, Fri Dec 08 11:20:40 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 7349-2:1993 ii BSI 08-1999 Foreword This Part of BS 7349 has been prepared under the direction of the General Mechanical Engineering St
14、andards Policy Committee, to provide a series of metric break mandrel open end blind rivets for general engineering purposes. BS 7349 is published in two Parts: Part 1: Specification for closed end blind rivets; Part 2: Specification for open end blind rivets. A British Standard does not purport to
15、include all the necessary provisions of a contract. Users of British Standards are responsible for their correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. Summary of pages This document comprises a front cover, an inside front cover, p
16、ages i and ii, pages 1 to 16, an inside back cover and a back cover. This standard has been updated (see copyright date) and may have had amendments incorporated. This will be indicated in the amendment table on the inside front cover. Licensed Copy: London South Bank University, London South Bank U
17、niversity, Fri Dec 08 11:20:40 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 7349-2:1993 BSI 08-19991 1 Scope This Part of BS 7349 specifies the dimensions, materials and performance requirements for break mandrel open end blind rivets with nominal diameters from 2.4 mm up to and including 6.4 mm an
18、d with protruding and countersunk head styles. Annex A describes the methods of test to determine the shear and tensile strengths. Annex B and Annex C contain recommendations for the selection and application of blind rivets. 2 Normative references This Part of BS 7349 incorporates, by reference, pr
19、ovisions from specific editions of other publications. These normative references are cited at the appropriate points in the text and the publications are listed on the inside back cover. Subsequent amendments to, or revisions of, any of these publications apply to this Part of BS 7349 only when inc
20、orporated in it by updating or revision. 3 Definitions For the purposes of this Part of BS 7349 the following definitions apply. 3.1 blind rivet with break mandrel a mechanical fastener capable of joining workpieces together from one side of the assembly only NOTEThe break mandrel which is pre-assem
21、bled to the rivet body, when gripped and pulled by a setting tool causes an expansion of the body on the blind side of the workpieces to be joined. It incorporates a predetermined break point which dependent upon design, permits the hollow rivet body, after setting, to be partly filled or to remain
22、hollow. The rivet sub-types in these cases are known respectively as semi-filled core and hollow core. 3.2 open end blind rivet a blind rivet having a hole completely through the full length of the rivet body 3.3 semi-filled core during rivet setting, the mandrel breaks within the rivet body so that
23、 a short length of the mandrel is retained within the rivet body 3.4 hollow core after rivet setting the bore of the rivet body is completely empty 3.5 break stem mandrel a mandrel which on setting a rivet, breaks in such a way that the head of the mandrel and a small portion of the length remains w
24、ithin the set rivet body NOTESee also 3.3, semi-filled core type. 3.6 break head mandrel a mandrel which on setting a rivet, breaks in such a way that the head of the mandrel falls from the assembly leaving the set rivet body free from obstruction NOTESee also 3.4, hollow core type. 3.7 rivet length
25、 the distance measured parallel to the axis of the rivet, from the largest diameter of the bearing surface of the head to the extreme end of the mandrel head 3.8 blind side clearance the minimum distance measured normal to the surface of the work piece material most remote from the head of the rivet
26、 to the extreme head of the mandrel which is required to permit rivets to be located and properly set (see la in Annex B) 3.9 grip range the maximum and minimum total thickness of workpieces to be joined by a particular type and length of blind rivet 3.10 tensile load the load which the rivet is cap
27、able of withstanding prior to failure when measured under test conditions 3.11 shear load the load which the rivet is capable of withstanding prior to failure when measured under test conditions 3.12 mandrel retention the ability for break stem mandrel rivets to retain within the rivet body the entr
28、apped length of mandrel after setting 3.13 hole size the diameter of the hole in the workpieces to be joined (see Annex C) 3.14 hole filling the ability of a blind rivet body to be expanded radially to fill the workpiece holes during setting 3.15 setting the operation of inserting the rivet into the
29、 workpiece and causing its actuation so that an assembly is made Licensed Copy: London South Bank University, London South Bank University, Fri Dec 08 11:20:40 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 7349-2:1993 2 BSI 08-1999 3.16 setting tool a specialized piece of equipment used to set blind
30、 rivets which may be powered manually, pneumatically, hydraulically, electrically, or by a combination of power sources and may be portable or in fixed positions 4 Materials Rivet bodies and mandrels shall be manufactured from the materials listed in Table 1. The materials shall be identified by the
31、 designation of the appropriate combination of rivet body/mandrel material required (see clause 9). 5 Dimensions 5.1 Open end blind rivets The dimensions of open end blind rivets shall be as given in Table 2 and Figure 1. 5.2 Mandrel diameter The mandrel diameters shall be as given in Table 3 and Fi
32、gure 1. 6 Finish 6.1 Rivet bodies Aluminium and aluminium alloy bodies shall be self finish with material designations 00, 10, 11, 12, 14, 14A, 15, 16, 17, 18, 18A, 19 and 19A. Copper bodies with material designations 20 and 22 shall be self finish. Carbon steel bodies, with material designation 30,
33、 shall be zinc electroplated with a nominal thickness of 5 m, with a yellow chromate conversion coating. Nickel copper bodies, with material designations of 40 and 42, shall be zinc electroplated with a nominal thickness of 3.0 m, with a yellow chromate conversion coating. Stainless steel bodies wit
34、h material designations 50 and 51 shall be self finish. NOTEIf finishes other than those specified above are required then they should be agreed between the purchaser and manufacturer. 6.2 Mandrels Steel mandrels for break stem rivets shall have either a phosphate coat and oil or a zinc coating. Ste
35、el mandrels for break head rivets shall be self finish. Mandrels in aluminium alloy, bronze and stainless steel shall be self finish. 7 Performance 7.1 Shear and tensile loads Rivets shall have shear and tensile loads not less than those values given in Table 4, when tested in accordance with Annex
36、A. 7.2 Mandrel break loads While setting the rivet, the axially applied load necessary to break the mandrel shall be within the limits specified in Table 5. 7.3 Break stem mandrel retention after setting The entrapped part of the mandrel shall withstand an axial load of 10 N without ejection. Table
37、1 Rivet body/mandrel material combinations Body materialMandrel materialMaterial designation Aluminium commercially pure Aluminium Al MgSi, grade 6101A Aluminium 2.5 % Mg, grade 5052 Aluminium 2.5 % Mg, grade 5052 Aluminium 2.0 % Mg BS 1475:1972, grade 5251 Aluminium 2.5 % Mg, grade 5052 Aluminium 2
38、.0 % Mg BS 1475:1972, grade 5251 Aluminium 3.0 % Mg, grade 5754 Aluminium 3.5 % Mg BS 1473:1972, grade 5154A Aluminium 3.5 % Mg BS 1473:1972, grade 5154A Aluminium 5.0 % Mg BS 1473:1972, grade 5056A Aluminium 5.0 % Mg BS 1473:1972, grade 5056A Aluminium 5.0 % Mg BS3 L58:1971 Copper BS 2873:1969, gra
39、de C101 Copper BS 2873:1969, grade C101 Steel, carbon 0.25 % max. Nickel copper alloy BS 3075:1976, grade NA13 Nickel copper alloy BS 3073:1976, grade NA13 Stainless steel, 300 series Stainless steel, 300 series Aluminium alloy Steel Aluminium alloy Stainless steel Stainless steel Steel Steel Steel
40、Stainless steel Steel Stainless steel Steel Steel Steel Bronze Steel Steel Stainless steel Steel Stainless steel 00 12 11 14 14A 18 18A 10 16 17 15 19 19A 20 22 30 40 42 50 51 Licensed Copy: London South Bank University, London South Bank University, Fri Dec 08 11:20:40 GMT+00:00 2006, Uncontrolled
41、Copy, (c) BSI BS 7349-2:1993 BSI 08-19993 Table 2 Dimensions of open end blind rivets Dimensions in millimetres Nominal rivet body diameter Actual rivet body diameter Rivet head configuration Mandrel protrusion ProtrudingCountersunk dsdkokodkckclp max.min.max.min.max.max.min.max.min. 2.4 3.0 3.2 4.0
42、 4.8 5.0 6.0 6.4 2.44 3.08 3.27 4.10 4.85 5.05 6.08 6.50 2.29 2.90 3.05 3.80 4.65 4.85 5.85 6.20 5.03 6.6 7.55 8.44 10.10 10.20 12.00 13.33 4.50 5.80 6.05 7.52 9.00 9.00 10.50 12.07 0.81 1.00 1.20 1.32 1.88 1.90 1.90 2.20 4.90 6.0 6.55 8.15 9.80 9.80 11.00 11.20 4.09 5.60 5.20 6.15 8.43 8.50 10.30 1
43、0.55 0.95 0.90 1.20 1.55 1.95 1.20 1.50 1.80 25.0 25.0 25.0 27.0 27.0 27.0 31.0 31.0 NOTE 1For mandrel diameter, dm, see Table 3. NOTE 2For rivet length l of protruding head type, see Table B.1 to Table B.6, inclusive. NOTE 3For rivet length l of countersunk head type, see Table B.7 to Table B.8 inc
44、lusive. Figure 1 Dimensions of open end blind rivets Licensed Copy: London South Bank University, London South Bank University, Fri Dec 08 11:20:40 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 7349-2:1993 4 BSI 08-1999 Table 3 Mandrel diameters Table 4 Shear and tensile loads Dimensions in millimet
45、res Nominal rivet body diameter Mandrel diameter dm Material designationa 0010 12 14 14A 15 16 17 18 18A 19 19A 1120 22 3040 42 50 51 max.min.max.min.max.min.max.min.max.min.max.min.max.min. 2.4 3.0 3.2 4.0 4.8 5.0 6.0 6.4 2.00 2.47 3.05 1.88 2.37 2.85 1.47 1.85 2.00 2.47 2.95 2.95 3.45 3.91 1.37 1.
46、60 1.70 2.05 2.59 2.70 3.15 3.61 2.00 2.95 1.88 2.85 1.85 2.00 2.47 1.60 1.78 2.1 2.00 2.15 2.78 3.45 3.05 3.70 3.91 1.75 1.88 2.24 2.85 2.80 3.45 3.81 2.00 2.47 2.95 3.91 1.88 2.24 2.85 3.81 2.05 2.15 2.75 3.05 3.25 1.80 1.88 2.24 2.85 3.00 a The designation numbers for rivet body/mandrel material
47、combinations are given in Table 1. Nominal rivet body diameter Minimum shear load (N)Minimum tensile load (N) Material designationaMaterial designationa mm 0010 11 12 14 14A 18 18A 15 16 17 19 19A 20 22 3040 42 50 51 0010 11 12 14 14A 18 18A 15 16 17 19 19A 20 22 3040 42 50 51 2.4 3.0 3.2 4.0 4.8 5.
48、0 6.0 6.4 535 845 1 155 310 500 530 850 1 160 1 600 2 000 2 050 400 760 1 160 1 690 2 100 3 000 3 110 600 840 1 260 800 1 160 1 650 2 400 2 600 3 300 3 750 1 500 2 200 3 300 5 400 1 600 1 870 2 800 3 900 4 200 665 1 020 1 420 360 400 670 1 020 1 420 1 300 2 000 2 490 530 900 980 1 560 2 220 2 800 4
49、800 4 090 700 1 100 1 320 900 1 380 2 090 3 020 3 200 3 800 4 000 1 900 3 000 3 750 6 750 2 000 2 000 3 110 4 400 5 000 a The designation numbers for rivet body/mandrel material combinations are given in Table 1. Licensed Copy: London South Bank University, London South Bank University, Fri Dec 08 11:20:40 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS