while zinc plating protects against corrosion in light-duty indoor or dry outdoor settings
these flange bolts combine a sturdy flange head with a serrated hex washer to help distribute load and resist loosening under vibration
Choose these screws for compatibility with standard 1/2"-13 threaded holes and for projects requiring a reliable
long-lasting fasteners ready when you need them
The Phillips-drive head paired with a truss profile delivers a clean appearance and easy driving in tight spaces
1/4"-20 X 1" Machine Screws | Flat Head | Slotted Drive | Silicon Bronze (50/Pkg.) Starrett while zinc plating protects againstMachine Screws Slotted Flat Silicon Bronze 1 4 20 x 1 are precision engineered fasteners designed for durable, corrosion resistant joinery in metal, wood, and composite assemblies. The flat head, slotted drive provides a clean, recessed finish for a secure, low profile install. Key features Material: Silicon bronze for strength and corrosion resistance Head style: Flat head for a low profile, flush fit Drive type: Slotted for compatibility with