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BS A 401-420:2015

Specification for screws, pan and 100° countersunk head, hexalobular drive recess (unified threads below ¼ inch) in various materials

General Information

Status : Confirmed
Standard Type: Main
Document No: BS A 401-420:2015
Document Year: 2015
Pages: 36
  • Section Volume:
  • GBM32 Aerospace Components & Fasteners (GMB32)

Life Cycle

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Confirmed
BS A 401-420:2015
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