10-16X3/4 Unslotted - Hex Washer - Serrated - 5/16 Across Flats - Self Piercing Screws - 1,000 Hour Salt Spray
High Corrosion Resistance
5/16" Across Flats of Hex
Full Thread
Measurable: Case Hardened to Rockwell C45 min.
Measurable: Core Hardness: Rockwell C28-33
