British Standard Whitworth Thread Form for bolts - Sistema de roscado "Whitworth " para pernos .

BRITISH STANDARD WHITWORTH THREAD FORM

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Diámetro exterior del filete (pulgadas) = Outer diameter of the thread (pounds )
Diámetro exterior del filete ( mm ) = Outer diameter of the thread ( mm )
Número de filetes por pulgada = Number of threads per pound .
Diámetro del núcleo (mm ) = Diameter of the core (mm )