1 /4 inch-20 x 1 Hex Cap Screws, Grade 8 Alloy Steel, Zinc Yellow, 100 Pack | Fully Threaded. Hex head with washer face. ASME B18.2.1. High strength hex bolts for automotive and structural use.

Features

• Grade 8 High-Strength Alloy Steel (SAE J429 Compliant) 150,000 PSI minimum tensile strength, 130,000 PSI proof load, and Rockwell C33-39 hardness delivers superior clamping force and fatigue resistance for critical structural, automotive, industrial machinery, and heavy equipment applications
• Zinc Yellow Chromate Plating Corrosion-resistant coating provides visual identification for QC/QA processes while meeting moderate environmental exposure requirements in industrial and HVAC installations
• Fully Threaded 1" Shank Length Complete threading from head to tip maximizes thread engagement versatility, eliminates partial-thread limitations, and accommodates variable material thickness in through-bolt assemblies
• Manufactured to ASME B18.2.1 & SAE J429 specifications
• Tensile Strength: 150,000 psi. min, 1/4 1.5 inch diams)
• 1/4"-20 UNC Coarse Thread Profile ASME B18.2.1 compliant threading ensures universal compatibility with standard tapped holes and hex nuts while delivering optimal holding power and vibration resistance
• Grade 8 Steel made of alloy steel and has six radial lines on the top of the bolt head