Product OverviewThese wheel lug studs are made of carbon steel and tested to demanding automotive industry standards to ensure strength, longevity and safety.Durable material - carbon steel meets SAE automotive industry standards for strength and hardnessCorrosion resistant - extensive salt spray testing helps ensure years of durability against rustTensile tested - lug studs undergo industry-standard proof-load testing to ensure strengthTrustworthy quality - backed by team of professional engineers and quality control specialists in the United StatesSpecificationsSpecificationsBolt Grade8ColorBlackHead Diameter40.31 mmKnurl Diameter (In)0.94 inMaterialCarbon SteelPackage Contents10 Wheel StudsPackaging TypeBagPart Number13-1570Part TypeWheel Lug StudQuick-Start NoseNoSAE or MetricMetricSafety Rating1Selling Package Quantity5Shoulder Diameter23 mmShoulder Length (In)39.62 mmShoulder ShapeRoundShoulder Thickness23 mmStyleSerrated StudThread Diameter22.23 mmThread DirectionClockwise (Right)Thread Length (In)43.69 mmThread Pitch1.5 mmThread SizeM22-1.50Thread TypeFineUnder Head Length88.9 mmWeight0.700000Cross References 018003009 VMRS W544 PACCAR Direct