Specification for bolts and screws incorporating either underhead locking or anti-rotation features
This British Standard specifies the materials, mechanical properties and marking requirements for bolts and screws incorporating either underhead locking or anti-rotation features when tested at an ambient temperature between 15 °C and 30 °C.
It applies to bolts and screws:
As the decarburization of any underhead locking or anti-rotation feature will seriously impair its intended function, partial or complete decarburization as given in BS EN 20898-1:1992 does not apply to this standard. There is instead a requirement for carbon restoration to ensure that no decarburization of the locking or anti-rotation feature takes place during the heat treatment process.
NOTE Performance at temperatures outside the operating range is not within the requirements of this standard.
| SDO | BSI: British Standards Institution |
| Document Number | 7814 |
| Publication Date | Dec. 15, 1995 |
| Language | en - English |
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| Revision Level | |
| Supercedes | |
| Committee | FME/9 |