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BSI BS 7842:1996

Bolts, screws and studs with pre-applied thread sealing feature incorporated into the thread
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BSI BS 7842:1996

Bolts, screws and studs with pre-applied thread sealing feature incorporated into the thread

PUBLISH DATE 1996
BSI BS 7842:1996

This British Standard specifies the coatings, dimensions, materials, lubrication and performance requirements for bolts, screws and studs with a pre-applied sealing feature incorporated into the thread, when tested at a temperature between 15 °C and 30 °C.

It applies to bolts, screws and studs:

  1. with ISO metric coarse pitch M4 to M24 threads conforming to BS 3643 : Part 2 : 1981;
  2. with specific strength requirements conforming to either BS 6104 : Part 3 : 1981, BS 6105 : 1981 or BS EN 20898-1 : 1992, as appropriate;
  3. with threads of tolerance class 6g or 4h conforming to BS 3643 : Part 2 : 1981;
  4. for application into a mating component with a thread of tolerance class 6H conforming to BS 3643 : Part 2 : 1981;
  5. for use within the temperature range - 50 °C to + 150 °C.

The following are not covered in the scope of this standard:

  1. performance at temperatures outside the operating range;
  2. performance of bolts, screws and studs for which a lubricated or protective coating is not permissible;
  3. performance of taper threaded components.
SDO BSI: British Standards Institution
Document Number 7842
Publication Date April 15, 1996
Language en - English
Page Count
Revision Level
Supercedes
Committee FME/9
Publish Date Document Id Type View
April 15, 1996 BS 7842:1996 Revision