1/4"-20 UNC Slotted Drive Countersunk Flat Head Machine Screws, A2 Stainless Steel, 1/2" - 1 1/2" Long (20, 1/4 X 1 1/2")

• Thread Specification: 1/4"-20 UNC (Unified National Coarse) thread standard ensures compatibility with standard tapped holes and nuts
• Drive Type & Head Style: Slotted drive with countersunk flat head design sits flush with or below the material surface for a smooth, professional finish
• Premium Material: Manufactured from A2 grade stainless steel offering excellent corrosion resistance and durability for long-lasting performance
• Length Range: Available in lengths from 13mm to 38mm (1/2" to 1 1/2") to suit various application requirements and material thicknesses
• Versatile Applications: Ideal for electronics, instruments, machinery, furniture assembly, and general engineering projects requiring secure fastening

These 1/4"-20 UNC slotted drive countersunk flat head machine screws are precision-engineered fasteners designed for applications requiring a flush, smooth finish. Manufactured from A2 stainless steel, these screws offer excellent corrosion resistance and durability, making them suitable for both indoor and outdoor installations. The countersunk flat head design allows the screw to sit flush with or below the surface of the material, creating a clean, professional appearance ideal for electronic enclosures, hardware assemblies, and precision equipment. Available in lengths ranging from 13mm to 38mm (1/2" to 1 1/2"), these versatile fasteners accommodate various material thicknesses and project requirements. The slotted drive system provides reliable engagement with standard flat-blade screwdrivers, whilst the 1/4"-20 UNC thread specification ensures compatibility with standard tapped holes and threaded inserts. The A2 grade stainless steel construction provides reliable performance in moisture-prone environments whilst maintaining structural integrity under typical load conditions. These machine screws are particularly well-suited for securing components in electronics, instrumentation, and general mechanical assemblies where a low-profile fastening solution is required.