Hex Washer - Unslotted - Type A - Self Tapping Screws - 7/16" A.F. - High Head

Across the Flats: 7/16" - High Head
Manufactured to ASME B18.6.3 8 & SAE J933 specifications
Case Hardened to Rockwell C45 min
(Core Hardness: Rockwell C28-38)
Fully Threaded / Steel Zinc Plated