DETAILED NOTES ON TYPES OF SCREW HEADS

Detailed Notes on types of screw heads

Hex screw heads are of two types—exterior and interior. External screw heads are hexagonal and protrude from your area, looking much like a bolt head. Some hex exterior screw heads have in-developed flanges, while some make do Along with the hexagon for The pinnacle. Drilling of pilot holes aren't required mainly because They are really self-dri

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