BS 7795:1995
Current
The latest, up-to-date edition.
Specification for bolts, screws and studs with a pre-applied micro-encapsulated chemical adhesive feature incorporated into the thread
Hardcopy , PDF
English
15-06-1995
Committees responsible
Foreword
Specification
1. Scope
2. Normative references
3. Definitions
4. Protective coatings
5. Pre-applied adhesive element dimensions
6. Materials and lubrication
7. Mechanical properties and performance
Annex
A. (normative) Torque testing
Tables
A.1 Prevailing torque
A.2 Breakaway torque
Figures
1. Position of pre-applied adhesive element
2. Diameter of pre-applied adhesive element
List of references
Specifies the coatings, dimensions, materials, lubrication and performance requirements for pre-applied adhesive type bolts, screws and studs with a micro-encapsulated chemical adhesive feature incorporated into the thread, when tested at an ambient room temperature between 15 degrees C and 30 degrees C. Does not cover: performance at temperatures outside the operating range; capability of providing a pressure or liquid seal; performance of bolts, screws and studs for which a lubricated coating is not permissible.
| Committee |
FME/9
|
| DevelopmentNote |
Supersedes 94/702252 DC. (10/2005) Reviewed and confirmed by BSI, January 2012. (12/2011)
|
| DocumentType |
Standard
|
| Pages |
12
|
| PublisherName |
British Standards Institution
|
| Status |
Current
|
| Supersedes |
This British Standard specifies the coatings, dimensions, materials, lubrication and performance requirements for pre-applied adhesive type bolts, screws and studs with a micro-encapsulated chemical adhesive feature incorporated into the thread, when tested at an ambient room temperature between 15 °C and 30 °C .
It applies to bolts, screws and studs:
- with IS0 metric coarse pitch M6 to M20 threads conforming to BS 3643 : Part 2 : 1981;
- with specific strength requirements conforming to either BS 6104 : Part 3 : 1981, BS 6105 : 1981 or BS EN 20898-1 : 1992, as appropriate;
- with threads of tolerance class 6g or 4h conforming to BS 3643 : Part 2 : 1981;
- for application into a mating component with a thread of tolerance class 6H conforming to BS 3643 : Part 2 : 1981;
- for use within the temperature range – 50 °C to + 150 °C .
The following are not covered in the scope of this standard:
- capability of providing a pressure or liquid seal;
- performance at temperatures outside the operating range;
- performance of bolts, screws and studs for which a lubricated coating is not permissible.
| BS 7371-1:1991 | Coatings on metal fasteners Specification for general requirements and selection guidelines |
| BS 6104-3:1981 | Mechanical properties of fasteners Specification for set screws and similar threaded fasteners not under tensile stresses |
| BS EN 20273:1992 | Fasteners. Clearance holes for bolts and screws |
| BS 7371-2:1993 | Coatings on metal fasteners Specification for torque/clamping force relationship |
| BS EN 20898-1:1992 | Mechanical properties of fasteners Bolts, screws and studs |
| BS EN 24032:1992 | Hexagon nuts, style 1. Product grades A and B |
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