1/4"-20x1" Grade 8 Hex Head Cap Screw

Hex Head Cap Screw Grade 8 
1/4" to 1-1/2"
Rockwell Hardness - C33 to C39
Proof Load Strength - 120,000 psi
Tensile Strength Minimum - 150,000 psi
Grade Markings - 6 Radial Lines 60 Degrees Apart

Grade 8 Hex Head Cap Screw: Ultimate Strength for High-Stress Applications

Engineered for superior performance in demanding environments, our Grade 8 Hex Head Cap Screws offer unparalleled strength and reliability for your most critical fastening needs.

Key Features:
• Premium Grade 8 strength:
• 120,000 psi Proof Load 
• 150,000 psi minimum Tensile Strength
• Rockwell Hardness: C33 to C39 for optimal durability
• Zinc Yellow Cr6 Plating: Available in 3 or 5 Micron thickness (ASTM F1941 / F1941M compliant)

Easy identification:
•  6 radial lines on the head, spaced 60 degrees apart 
• Precision manufacturing: Dimensions comply with ASME B18.21.1 standards

Ideal for heavy-duty applications in industries such as:
•   Heavy machinery and equipment
•   Structural assemblies
•   Automotive manufacturing
•   Construction projects
•   OEM production

Available in a wide range of sizes to suit your specific needs:
•   Diameters: 1/4" to 1-1/2"
•   Lengths: Up to 13"

Our Grade 8 Hex Head Cap Screws are the go-to fasteners for projects demanding maximum strength and reliability. Trust in their superior quality to secure your most critical assemblies with confidence.