BS EN 4499:2009 Aerospace series. Screws, 100° countersunk reduced head, offset cruciform recess, close tolerance normal shank, short thread, in titanium alloy, anodized, with aluminium pigmented coating. Classification: 1100 MPa (at ambient temperature) / 315 °C
BS EN 4499 specifies the characteristics of screws, 100° countersunk reduced head, offset cruciform recess, close tolerance normal shank, short thread, in titanium alloy, anodized, with aluminium pigmented coating. Classification: 1 100 MPa 1) / 315 °C 2).
Contents of BS EN 4499:2009:
- Foreword
- Scope
- Normative references
- Required characteristics
- Configuration - Dimensions - Masses
- Tolerances of form and position
- Materials
- Surface treatments
- Designation
- Marking
- Technical specification
- General
- Approval of manufacturers
- Qualification of bolts
- Requirement deleted
- Oversized bolts