SBAC TS 135 : 2

1 SCOPE
2 ASSOCIATED SPECIFICATIONS
3 DEFINITIONS
  3.1 Production batch
  3.2 Inspection lot
  3.3 Discontinuities
  3.4 Test temperature
  3.5 Simple random sampling
  3.6 Critical defect
  3.7 Major defect
  3.8 Minor defect
  3.9 Sampling plan
  3.10 Limiting quality
  3.11 Acceptable quality level
  3.12 Finished nut
  3.13 Definition document
  3.14 Self locking torque
  3.15 Seating torque
  3.16 Unseating torque
  3.17 Breakaway torque
  3.18 Wrench torque
4 CERTIFICATION AND QUALITY ASSURANCE
  4.1 Qualification
  4.2 Acceptance
  4.3 Quality system certification
  4.4 Responsibility for inspection and tests
  4.5 Inspection and test report
5 Table 1: Technical requirement and test methods
  5.1 Materials
  5.2 Dimensions
  5.3 Manufacturing
  5.4 Mechanical properties
  5.5 Metallurgical properties
  5.6 Product identification
  5.7 Delivery
Table 2: Summary of tests - qualification and production
         acceptance
Table 3: Qualification testing requirements for nut
         samples
Table 4: Load values for axial strength: wrench torque;
         push out; torque out and tightening torque for
         accelerated vibration
Table 5: Values for breakaway torque; locking torque and
         assembly torque
Table 6: Classification of defects
Table 7: Sampling plans for visual inspections and
         dimensional characteristics
Table 8: Sampling plans for the inspection of mechanical
         and metallurgical characteristics
Table 9: Maximum depth of permissible discontinuities

Covers the technical, qualification and quality assurance requirements for self locking, deep counterbored nuts in material BS HR650(A 286) or EN 2399/EN 3639 of tensile class 1100 MPa at room temperature.