Designed for makers who value both form and function, this #4 black oxide countersunk finishing washer is built to enhance the appearance and strength of your screw assemblies. Ideal for flat-head and other tapered screws, this washer provides a clean, professional finish while helping to distribute pressure evenly across handle scales, sheaths, holsters, and gear mounts.
Made to fit standard 4-40 screw heads, it delivers tight, flush fitting with the added benefit of corrosion resistance and a tactical black oxide coating. Whether you're building custom knives or fabricating firearm holsters, this finishing washer is a reliable choice for a clean and secure final touch.
Specifications:
Washer Size: #4 (fits standard 4-40 screw heads)
Outer Diameter: 0.350 inches
Inner Diameter: 0.165 inches
Hole Diameter: 0.130 inches
Finish: Black Oxide
Material: Steel
Sold Individually: 1 washer per quantity
