Bulk 1-1/2"-6 Grade 8 Hex Cap Screws (Zinc Yellow CR+6 Bake, UNC)

High-Torque Fasteners for Heavy-Duty Industrial Applications

When your projects demand unmatched strength, trust our 1-1/2"-6 Grade 8 Hex Cap Screws with zinc-yellow CR+6 bake. Engineered for maximum reliability in large-scale and high-stress applications, these screws feature coarse UNC threads that ensure secure fastening even under extreme load or vibration.

Note – PT = Partial Thread

Key Features

• Diameter: 1-1/2 inch
• Thread Size: 1-1/2"-6 (6 Threads Per Inch) – UNC (Coarse) Thread
• Length Options: Available in multiple lengths for customized use
• Thread Length: Full or partial threading based on overall screw length
• Wrench Size (Across Flats): Approximately 2-1/4 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: 1-1/2"-6 Nuts & Washers Available Here

Bulk Ordering Benefits

Purchasing these large-diameter screws in bulk not only ensures a steady supply for your heavy-duty needs, but also significantly reduces your per-piece cost. Perfect for industrial, construction, and manufacturing environments, bulk buying helps you stay on budget and avoid downtime from stock shortages.

Material Properties

• Outstanding Strength: Grade 8 build handles high torque and load demands.
• Corrosion Resistance: Zinc-yellow finish with CR+6 bake combats rust and oxidation.
• Durable Under Stress: Engineered to withstand intense vibration and extreme environments.

Ideal Applications

• Heavy Machinery & Equipment
• Structural & Construction Projects
• Off-Road & Agricultural Vehicles
• Industrial Manufacturing & Assembly
• High-Load Fastening Needs

Why Monster Bolts?

Since 2012, Monster Bolts has served industrial and manufacturing clients with high-quality fasteners at competitive prices. We take pride in:

• Reliability: All bolts meet strict ASTM standards for consistent performance.
• Competitive Pricing: Bulk rates keep your overall costs in check for large projects.
• Vast Inventory & Fast Shipping: We maintain robust stock levels to minimize project delays.
• Dedicated Expertise: Our knowledgeable support team assists with product selection and technical questions.

Installation Tips

• Use an appropriate torque wrench or impact tool to avoid rounding or head damage.
• Keep threads clean and lubricated for accurate torque readings and a secure hold.
• Pair with Grade 8 nuts and washers for maximum joint strength and reliability.

Note: Matching nuts and washers are sold separately to complete your fastening setup.

Order in Bulk & Save

Equip your operation with our 1-1/2"-6 Grade 8 Hex Cap Screws for robust performance in demanding environments. Secure your supply at a bulk discount and keep your projects running smoothly. Experience industry-leading quality, rapid shipping, and dedicated customer support—all from Monster Bolts.

✔️ Trusted by professionals in construction, industrial, and manufacturing sectors

✔️ Zinc-yellow CR+6 finish for superior corrosion resistance

✔️ Meets ASTM B18.2.1 standards for quality assurance