C-Clamp; Screw Size 1/2" Diameter x 1-1/2" Length; Load Capacity 500 Lb; Material Carbon Steel; Process Hardened; Finish Electro Galvanized; Application Wood Working, Commercial, Industrial; Applicable Standard Federal Specification A-A-1192A Type 23, MSS-SP-69 Type 23; Includes Locking Nut, Steel Cup Point Set Screw; Weight 0.38 Lb; Warranty 1 Year Limited