These wheel lug studs are made of carbon steel and tested to demanding automotive industry standards to ensure strength, longevity and safety. Corrosion resistant - extensive salt spray testing helps ensure years of durability against rust Tensile tested - lug studs undergo industry-standard proof-load testing to ensure strength Trustworthy quality - backed by team of professional engineers and quality control specialists in the United States Durable material - carbon steel meets SAE automotive industry standards for strength and hardness Package Dimensions: 4.81 x 3.63 x 2.19 inches Package Weight: 2.41 lb Package Quantity: 1 UPC: 019495608998 Color: Silver Head Diameter: 0.86 in Material: Steel Package Contents: 10 Studs Quick-Start Nose: No SAE or Metric: SAE Shoulder Diameter: 0.652 IN Shoulder Length (In): 0.813 in Shoulder Thickness: 0.24 IN Splined Bore Diameter: 0.652 IN Style: Serrated Stud Thread Diameter: 0.625 IN Thread Direction: Clockwise (Right) Thread Length (In): 1.59 in Thread Size: 5/8-18 Threads Per Inch: 18 Under Head Length: 2.406 in Country of Origin: US