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Specification for self-tapping screws and metallic drive screws.
Automatically translated name:
Specification for self-tapping screws and metallic drive screws (Partially replaced)
STANDARD published on 25.9.1972
Designation standards: BS 4174:1972
Publication date standards: 25.9.1972
SKU: NS-66811
The number of pages: 52
Approximate weight : 156 g (0.34 lbs)
Country: British technical standard
Category: Technical standards BS
Ferrous and non-ferrous. Gives general dimensions for countersunk, raised countersunk and pan head tapping screws with slotted or recessed heads, slotted mushroom heads, recessed flange heads and hexagon head tapping screws and round head metallic drive screws. Gauges for head flushness for corrosion head screws and for checking recess penetration of recessed head screws, together with testing requirements and a box with hole sizes also given. Status: Confirmed Replaced by: Confirmed
1.5.1992
1.4.1992
30.1.1956
WITHDRAWN
19.8.1964
WITHDRAWN
31.5.2011
WITHDRAWN
15.10.1992
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