BS 7751-1:1994
Current
The latest, up-to-date edition.
Prevailing torque type wire thread inserts Specification for ISO metric coarse pitch threads
Hardcopy , PDF
English
31-10-2006
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Committees responsible
Foreword
1 Scope
2 References
3 Definitions
4 Dimensions
5 Material
6 Finish
7 Insert selection
8 Installation
9 Marking
Annex A (informative) Insert selection
Figures
Tables
List of references
Specifies requirements for prevailing torque wire thread inserts which, when fitted into an appropriately prepared hole.
| Committee |
FME/9
|
| DevelopmentNote |
Supersedes 92/84542 DC. (10/2005) Reviewed and confirmed by BSI, January 2012. (12/2011)
|
| DocumentType |
Standard
|
| Pages |
18
|
| PublisherName |
British Standards Institution
|
| Status |
Current
|
| Supersedes |
This Part of BS 7751 specifies requirements for prevailing torque wire thread inserts which, when fitted into an appropriately prepared hole, will:
- provide ISO metric coarse pitch female threads of tolerance class 5H or 6H in the free running coils with sizes from M2.2 to M39 inclusive;
- accept ISO metric male threads conforming to BS 3643-1:1981 and BS 3643-2:1981;
- give a frictional resistance to rotation of a male threaded component assembled with it, of such a value that the insert assembly is considered self locking;
- operate successfully in the temperature range − 50 °C to + 300 °C.
NOTE ISO metric MJ threads conforming to BS 6293-1 and BS 6293-2 may be used with these inserts.
| DEFSTAN 08-107/3(2013) : 2013 | GENERAL REQUIREMENTS FOR THE DESIGN OF ELECTROTECHNICAL AND NAVAL WEAPON EQUIPMENT |
| DEFSTAN 02-862(PT1)/2(2007) : 2007 | FASTENERS - PART 1: GENERAL |
| DEFSTAN 02-862(PT1)/3(2011) : 2011 | NAVAL FASTENERS - PART 1: MATERIAL SELECTION AND USE |
| BS 7751-2:1994 | Prevailing torque type wire thread inserts Specification for ISO metric fine pitch threads |
| BS 7753:1994 | Specification for performance of prevailing torque wire thread inserts |
| BS 3643-1:1981 | ISO metric screw threads Principles and basic data |
| BS 6293-2:1994 | Aerospace. MJ threads Limit dimensions for bolts and nuts |
| BS 7751-2:1994 | Prevailing torque type wire thread inserts Specification for ISO metric fine pitch threads |
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