BS 3643-1:1981
Superseded
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
View Superseded by
ISO metric screw threads Principles and basic data
Available format(s)
Hardcopy , PDF
Superseded date
30-11-2007
Superseded by
Language(s)
English
Published date
31-03-1981
Publisher
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Foreword
Cooperating organizations
Specification
1 Scope
2 References
3 Basic profile
4 General plan
5 Basic dimensions
6 Tolerances: principles and basic data
7 Tolerances: deviations for constructional threads
Appendix
A Notes for guidance
B Outline guide and examples for calculating limits of
size of untabulated metric screw threads
Tables
1 Basic profile dimensions
2 Maximum diameters
3 Diameter/pitch combinations
4 Basic dimensions
5 Fundamental deviations for nut threads and bolt
threads
6 Lengths of thread engagement
7 Minor diameter tolerances of nut thread (TD1)
8 Major diameter tolerance of bolt thread (Td)
9 Pitch diameter tolerance of nut thread (TD2)
10 Pitch diameter tolerance of bolt thread (Td2)
11 Minimum root radii
12 Tolerance classes for nuts
13 Tolerance classes for bolts
14 Deviations
Figures
1 Basic profile of ISO metric thread
2 Basic dimensions
3 Tolerance positions with respect to zero line (basic
size)
4 Nut threads with tolerance position G
5 Nut threads with tolerance position H
6 Bolt threads with tolerance position e, f and g
7 Bolt threads with tolerance position h
8 Bolt root profile
9 Maximum material profiles for internal and external
threads
Applies to single-start parallel screw threads having the ISO basic profile for triangular screw threads. Data for diameters from 1.0 mm to 300 mm are tabulated and an appendix gives the information necessary to calculate the limits of size for exceptions to the tabulated data.
| Committee |
FME/9
|
| DevelopmentNote |
Supersedes 78/80250 DC, BS 3643-1(1949), BS 3643-1(1958), BS 3643-1(1963). (07/2002) Reviewed and confirmed by BSI, November, 2004. (11/2004)
|
| DocumentType |
Standard
|
| Pages |
60
|
| PublisherName |
British Standards Institution
|
| Status |
Superseded
|
| SupersededBy | |
| Supersedes |
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| DEFSTAN 02-862(PT3)/2(2007) : 2007 | FASTENERS - PART 3: NON-FERROUS FASTENERS |
| DEFSTAN 02-304(PT1)/2(2002) : 2002 | SHAFTING SYSTEMS AND PROPULSORS - PART 1: DESIGN REQUIREMENTS FOR MAIN PROPULSION SHAFTING |
| DEFSTAN 47-22/1(1979) : 1979 | END FITTINGS FOR FLEXIBLE HOSE ASSEMBLIES FOR AIRCRAFT - METRIC |
| BS EN ISO 898-6:1996 | Mechanical properties of fasteners Nuts with specified proof load values. Fine pitch thread |
| DEFSTAN 02-862(PT4)/2(2007) : 2007 | FASTENERS - PART 4: FERROUS (SUBMARINE FIRST LEVEL QUALITY ASSURED) |
| DEFSTAN 02-862(PT2)/2(2007) : 2007 | FASTENERS - PART 2: FERROUS |
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| DEFSTAN 81-86/2(2000) : 2000 CORR 2000 | METAL FITTINGS FOR WOODEN CONTAINERS |
| DEFSTAN 02-113(PT3)/2(2000) : 2000 | REQUIREMENTS FOR MECHANICAL HANDLING - PART 3: ANCHOR MACHINERY, COMBINED CAPSTANS AND CABLE HOLDERS, ANCHOR CAPSTANS AND WINDLASSES |
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| BS 2499:1973 | Specification for hot applied joint sealants for concrete pavements |
| BS 6623-1:1985 | DTE/DCE interface connectors and pin assignments Specification for 25-pin connector (ISO DIS 2110 and DAD 1) |
| BS 6331-2:1983 | Mounting dimensions of single rod double acting hydraulic cylinders Specification for 160 bar compact series |
| BS 3486-3:1970 | Specification for wheels for agricultural machinery, implements and trailers Nuts |
| EN 27434:1992 | Slotted set screws with cone point (ISO 7434:1983) |
| EN 28839:1991 | Mechanical properties of fasteners - Bolts, screws, studs and nuts made of non-ferrous metals (ISO 8839:1986) |
| BS 7371-4:1994 | Coatings on metal fasteners Specification for electroplated nickel, nickel/chromium and copper/nickel/chromium coatings |
| BS 5796:1987 | Specification for drain fill and level plugs for earth-moving machinery |
| EN 27435:1992 | Slotted set screws with long dog point (ISO 7435:1983) |
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| EN 27436:1992 | Slotted set screws with cup point (ISO 7436:1983) |
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| BS 919-3:1968 | Specification for screw gauge limits and tolerances Gauges for ISO metric screw threads |
| PD 6494:1980 | Mismatch of screw thread systems |
| BS 6104-1:1981 | Mechanical properties of fasteners Specification for bolts, screws and studs |
| ISO 724:1993 | ISO general-purpose metric screw threads — Basic dimensions |
| BS 6293-2:1994 | Aerospace. MJ threads Limit dimensions for bolts and nuts |
| ISO 965-2:1998 | ISO general purpose metric screw threads — Tolerances — Part 2: Limits of sizes for general purpose external and internal screw threads — Medium quality |
| ISO 262:1998 | ISO general purpose metric screw threads — Selected sizes for screws, bolts and nuts |
| ISO 68:1973 | ISO general purpose screw threads Basic profile |
| BS 3641-3:1973 | Specification for symbols for machine tools. Additional general symbols |
| ISO 9653:1998 | Adhesives Test method for shear impact strength of adhesive bonds |
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