1/2"-13 X 2-1/2" Machine Screws | Flat Head | Slotted Drive | Plain Steel (50/Pkg.) Alloy 20 The combination of steel strength

The combination of steel strength and zinc plating resists corrosion in typical workshop environments

matte black oxide finish designed to blend with metal surfaces

75 x 30mm DIN 6921 flange bolts

Applications requiring low-reflectivity fasteners with corrosion resistance

1/2"-13 X 2-1/2" Machine Screws | Flat Head | Slotted Drive | Plain Steel (50/Pkg.) Alloy 20 The combination of steel strengthGrip a dependable fastening solution with our Machine Screws Slotted Flat Plain Steel 1 2 13 x 2 1 2. Featuring a slotted drive for easy screwdriver alignment and a flat head designed to sit flush against the work surface, these machine screws are built from plain steel for economical, durable performance in metal to metal assemblies. Perfect for mounting components, enclosures, and machinery where a flush, low profile fastener is required.