1/2"-13x2-1/2" Grade 5 Hex Head Cap Screw

Hex Head Cap Screw Grade 5 Fastener for Industrial Strength Applications

The Hex Head Cap Screw Grade 5 fastener is a trusted solution for professionals who require strength, consistency, and long-term reliability in demanding environments. Widely used in industrial, construction, automotive, and machinery applications, this fastener delivers dependable performance where medium- to heavy-duty strength is essential.

Built for Strength and Durability

Grade 5 hex head cap screws are manufactured from high-strength steel and heat treated to meet SAE J429 requirements. Easily identified by three radial head markings spaced 120 degrees apart, these fasteners provide a proven balance of tensile strength, hardness, and fatigue resistance. Their six-sided hex head allows for efficient wrenching and precise torque application, ensuring secure and repeatable installations.

Clear Zinc Cr3 Plating for Corrosion Resistance

Clear zinc trivalent (Cr3) plating adds a protective, environmentally responsible coating that resists rust and oxidation in moderate exposure conditions. With a minimum coating thickness of 0.0001" (3 microns) or 0.0002" (5 microns), this finish enhances fastener longevity without compromising thread fit or mechanical performance. The clean, bright appearance also makes these fasteners ideal for visible assemblies.

Mechanical Specifications by Size Range

Sizes 1/4" to 1"

• Rockwell Hardness: C25–C34

• Proof Load: 85,000 psi

• Minimum Tensile Strength: 120,000 psi

Sizes Over 1" to 1-1/2"

• Rockwell Hardness: C19–C30

• Proof Load: 74,000 psi

• Minimum Tensile Strength: 105,000 psi

These specifications make Grade 5 fasteners suitable for applications exposed to vibration, shear, and repeated loading.

Why Choose Grade 5 Hex Head Cap Screws

High-strength steel construction for industrial reliability

Clear zinc Cr3 plating for corrosion protection

Broad size range for versatile applications

Easy installation with standard tools

Cost-effective performance with long service life

For projects that demand strength, durability, and proven performance, the Hex Head Cap Screw Grade 5 fastener remains the go-to choice for professionals across industries.