5/16-18 x 3 1/2 Serrated Hex Flanged Washer Full Thread Screw Case Hard Zinc KPUBZ They have a hex head

They have a hex head for easy driving and are designed for use in a variety of applications

while the full thread design provides maximum holding power

The washer has head markings that indicate its size and grade

engineering

5/16-18 x 3 1/2 Serrated Hex Flanged Washer Full Thread Screw Case Hard Zinc KPUBZ They have a hex headThis 5 16 18 x 3 1 2 Serrated Hex Flanged Washer Full Thread Screw Case Hard Zinc is a versatile and durable fastener designed for a wide range of applications. It features a serrated hex flange head that provides a secure grip and prevents loosening, while the full thread allows for maximum holding power. The case hardened zinc plating provides excellent corrosion resistance, making it suitable for both indoor and outdoor use. The screw is ideal for