Unslotted Indented Hex Washer Head with Locking Serrations, Zinc Plated

• Meets ASTM C 1513 for cold-formed steel framing connections
• Meets F.I.P.-1000.7 for torsional strength & drill speed
• Meets SAE J78 for performance & dimensional specifications
• Meets ASTM A 510 for carbon steel manufacturing
• Meets ASTM F1941 for corrosion resistance

• Material Application: Attaches metal to metal