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Homepage>BS Standards>49 AIRCRAFT AND SPACE VEHICLE ENGINEERING>49.030 Fasteners for aerospace construction>49.030.50 Washers and other locking elements>BS SP 55 and SP 56:1953+A3:2016 Specification for washers, spring, double coil (inch sizes), steel, cadmium plated and phosphor bronze. For aircraft
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immediate downloadReleased: 2016-02-29
BS SP 55 and SP 56:1953+A3:2016 Specification for washers, spring, double coil (inch sizes), steel, cadmium plated and phosphor bronze. For aircraft

BS SP 55 and SP 56:1953+A3:2016

Specification for washers, spring, double coil (inch sizes), steel, cadmium plated and phosphor bronze. For aircraft

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English Secure PDF
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Standard number:BS SP 55 and SP 56:1953+A3:2016
Pages:8
Released:2016-02-29
ISBN:978 0 580 87036 1
Status:Standard
DESCRIPTION

BS SP 55 and SP 56:1953+A3:2016


This standard BS SP 55 and SP 56:1953+A3:2016 Specification for washers, spring, double coil (inch sizes), steel, cadmium plated and phosphor bronze. For aircraft is classified in these ICS categories:
  • 49.030.50 Washers and other locking elements

These British Standards specify the materials, dimensions and finish of double coil spring washers for aircraft, suitable for use with bolts and nuts with BA, BSF or UNF threads.