Bulk 9/16"-12 Grade 8 Hex Cap Screws (Zinc Yellow CR+6 Bake, UNC)

High-Strength Fasteners for Industrial & Manufacturing Applications

Secure your assemblies with our 9/16"-12 Grade 8 Hex Cap Screws, finished with a zinc-yellow CR+6 bake for robust corrosion resistance. Designed with coarse (UNC) threads, these screws excel in high-load and high-vibration environments such as machinery, construction, and heavy equipment.

Note – PT = Partial Thread

Key Features

• Diameter: 9/16 inch
• Thread Size: 9/16"-12 – UNC (Coarse) Thread
• Length Options: Offered in various lengths to meet diverse project needs
• Thread Length: May be fully or partially threaded based on screw length
• Wrench Size (Across Flats): 13/16 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: 9/16"-12 Nuts & Washers Available Here

Bulk Ordering Advantages

Opting for bulk orders reduces your per-piece cost and guarantees you’ll have a reliable supply of top-quality fasteners on hand. This makes them an ideal choice for industrial enterprises, construction firms, and manufacturers that need large volumes of consistent, high-performing hardware.

Material Properties

• Grade 8 Strength: Specifically engineered for high torque and load conditions.
• Corrosion Resistance: The zinc-yellow CR+6 finish protects against rust and environmental wear.
• Durable UNC Threads: Coarse threading ensures a secure grip in heavy-duty applications.

Ideal Applications

• Industrial Machinery & Equipment
• Construction & Structural Projects
• Automotive & Heavy Vehicle Assembly
• Agricultural & Off-Road Machinery
• Maintenance & Repair Operations (MRO)

Why Monster Bolts?

Since 2012, Monster Bolts has been a go-to source for high-quality, industrial-grade fasteners. We stand out for:

• Reliability: Adherence to ASTM standards ensures consistent, reliable performance.
• Competitive Bulk Pricing: Save money on large orders without compromising on quality.
• Extensive Inventory & Fast Shipping: Maintain productivity with minimal wait times.
• Technical Expertise: Our skilled team can offer guidance on product selection and installation.

Installation Tips

• Choose the correct size wrench or impact tool to avoid head or thread damage.
• Clean and lubricate threads before assembly to achieve accurate torque settings and a secure hold.
• Pair with Grade 8 nuts and washers for maximum joint integrity and stability.

Note: Nuts and washers are sold separately.

Stock Up on Bulk Supplies

For industrial-strength fastening solutions, trust 9/16"-12 Grade 8 Hex Cap Screws from Monster Bolts. Order in bulk to streamline your inventory management, reduce costs, and keep your projects on track with dependable, standards-compliant hardware.

✔️ Trusted by professionals in construction, manufacturing, and automotive industries

✔️ Zinc-yellow CR+6 coating provides optimal corrosion resistance

✔️ Meets ASTM B18.2.1 standards for proven reliability