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BS A 401-420:2015

$167.15

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

Published By Publication Date Number of Pages
BSI 2015 36
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This British Standard specifies the dimensions, materials, protective finishes and part numbers for 100° countersunk head and pan head screws with unified threads for non-structural general aerospace use.

BS A 401-420:2015
$167.15