Bulk 5/8"-11 Grade 8 Hex Cap Screws (Zinc Yellow CR+6 Bake, UNC)

Dependable Fasteners for Industrial & Manufacturing Projects

Take your projects to the next level with our 5/8"-11 Grade 8 Hex Cap Screws, fortified by a zinc-yellow CR+6 bake for superior corrosion resistance. Featuring coarse (UNC) threads, these high-strength screws excel in applications requiring robust clamping power, from heavy machinery to structural builds.

Note – PT = Partial Thread

Key Features

• Diameter: 5/8 inch
• Thread Size: 5/8"-11 – UNC (Coarse) Thread
• Length Options: Offered in various lengths to fit diverse project requirements
• Thread Length: May be fully or partially threaded depending on overall screw length
• Wrench Size (Across Flats): 15/16 inch (standard hex head)
• Material & Finish: Grade 8 alloy steel with zinc-yellow CR+6 bake
• Type: Hex Cap Screw
• System of Measurement: Inch (Imperial / US)
• Specifications: Conforms to ASTM B18.2.1
• Matching Nuts & Washers: 5/8"-11 Nuts & Washers Available Here

Bulk Ordering Advantages

Buying these Grade 8 hex cap screws in bulk offers significant per-piece savings, ensuring a reliable stock for your ongoing or large-scale projects. This is especially advantageous for industrial operations, contractors, and OEMs looking to streamline procurement and maintain consistent quality.

Material Properties

• Exceptional Strength: Grade 8 steel designed to withstand high loads and torque.
• Corrosion Resistance: Zinc-yellow finish with CR+6 bake helps guard against rust.
• UNC Thread Efficiency: Coarse threads ensure a secure grip in a variety of materials.

Ideal Applications

• Industrial Machinery & Equipment
• Construction & Structural Engineering
• Automotive & Heavy Vehicle Assembly
• Agricultural & Off-Road Machinery
• Manufacturing & Maintenance Operations

Why Monster Bolts?

Since 2012, Monster Bolts has been a trusted supplier for professionals seeking high-quality, industrial-grade fasteners. Our commitments include:

• Reliability: Adherence to ASTM standards guarantees consistent performance.
• Competitive Bulk Pricing: Optimize costs without sacrificing quality.
• Wide Inventory & Fast Shipping: Keep projects moving with our quick turnaround.
• Expert Assistance: Our knowledgeable staff can guide you through product selection and technical inquiries.

Installation Tips

• Use a properly sized wrench or impact socket to avoid damaging the head or threads.
• Clean and lubricate threads before assembly for accurate torque application and a secure hold.
• Pair with Grade 8 nuts and washers to achieve maximum joint integrity.

Note: Nuts and washers are sold separately.

Secure Your Bulk Supply Today

Don’t compromise on the strength and reliability of your fastening solutions. Order 5/8"-11 Grade 8 Hex Cap Screws in bulk to cut costs, simplify your supply chain, and leverage Monster Bolts’ proven commitment to exceptional service and fast shipping.

✔️ Preferred by professionals in heavy machinery, construction, and automotive sectors

✔️ Zinc-yellow CR+6 finish for enhanced corrosion protection

✔️ Meets ASTM B18.2.1 standards for guaranteed reliability