Top Shelf M2x4 Flat Head Socket Cap Screws 100 Pack Heavy Duty Carbon Steel Hex Drive Machine Bolts Grade 10.9 Full Thread Countersunk Fasteners Shop Grade Hardware Black
✔️ M2x4 x 4mm (0.16in) Grade 10.9 countersunk screw, black steel
This 100-piece set of hex-drive machine screws provides solid grip for mounting thin covers and structural plates in tight spaces. Builders and technicians commonly use these counter sink bolts to attach aluminum extrusion brackets, electronic enclosures, and automotive trim pieces where a flush finish prevents snags and maintains aerodynamic lines.
✅ M2x4 thread pitch measured at 0.5mm spacing and 0.02 inch intervals✅ 4mm cylinder diameter sits exactly at 0.16 inch across the shaft
✅ 4mm flight length translates directly to 0.16 inch total reach
✅ 2.5mm head height rounds out to 0.1 inch for shallow burial depth
💡 What makes countersunk socket head bolts better for flush surface mounting? Choosing flathead machine screws keeps hardware hidden while delivering serious pull strength on thin metal sheets. These recessed drive bolts act handy for assembling control panels or chassis covers where protruding heads would catch wiring or block moving shields. - Tapered underhead geometry cuts cleanly into tapped holes for zero profile clearance - Precision hex engagement stops slipping when backing down high tension loads - Oil coated carbon core resists galvanic corrosion near mixed metal assemblies - Standardized metric gauge pairs easily with common DIN industrial fixtures
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