Bulk 1/4″-20 Grade 8 Hex Cap Screws (Coarse Thread, Alloy Steel, Plain)

Durable Fasteners for Industrial, Construction, and Automotive Use

Upgrade your fastening solutions with 1/4″-20 Grade 8 Hex Cap Screws, made from high-strength alloy steel with a plain (uncoated) finish. Designed with coarse-thread (UNC) technology, these fasteners provide superior holding power, making them ideal for industrial machinery, construction projects, automotive repairs, and more.

Note PT = Partial Thread

Key Features

• Diameter: 1/4 inch
• Thread Size: 1/4″-20 UNC (Coarse) Thread
• Length Options: Available in multiple lengths to suit various applications
• Thread Length: Fully or partially threaded, depending on overall screw length
• Wrench Size (Across Flats): 7/16 inch (standard hex head)
• Material: Grade 8 high-strength alloy steel
• Finish: Plain (uncoated) ideal for applications that dont require additional coatings
• Type: Hex Cap Screw
• System of Measurement: Inch (Imperial / US)
• Specifications: Meets ASTM B18.2.1 standards
• Matching Nuts & Washers: 1/4″-20 Nuts & Washers Available Here

Bulk Ordering Advantages

Purchasing in bulk reduces per-piece costs and ensures a steady inventory of high-performance fasteners. Ideal for manufacturing, heavy equipment repairs, and industrial projects, where a large quantity of durable bolts is needed.

Material Properties

• Heavy-Duty Alloy Steel: Provides superior strength for demanding applications.
• Plain Finish: Cost-effective solution where extra coatings are unnecessary.
• Coarse Thread Strength: UNC threading offers excellent grip and vibration resistance.

Ideal Applications

• Industrial Machinery & Equipment
• Automotive & Engine Assembly
• Construction & Structural Reinforcement
• Agricultural & Off-Road Machinery
• Maintenance, Repair & Overhaul (MRO)

Why Buy from Monster Bolts?

Since 2012, Monster Bolts has been a trusted supplier of industrial-grade fasteners, offering:

• Reliable Performance: Meets ASTM B18.2.1 for verified strength and durability.
• Bulk Discounts: Save more with high-volume orders at competitive pricing.
• Large Inventory & Fast Shipping: Minimize downtime with our in-stock supply.
• Expert Support: Our team is ready to help with product selection and technical guidance.

Installation Tips

• Use the correct torque settings to prevent overtightening.
• Clean and lubricate threads before assembly for accurate torque readings.
• Pair with Grade 8 nuts and washers for maximum joint integrity and load distribution.

Note: Nuts and washers are sold separately.

Order in Bulk & Save

Get high-strength 1/4″-20 Grade 8 Hex Cap Screws at the best wholesale rates. Designed for construction, industrial, and automotive applications. Order now and experience fast shipping, bulk discounts, and expert service from Monster Bolts.

Ideal for structural, mechanical, and industrial projects

Plain finish provides cost-efficient, uncoated fastening

ASTM B18.2.1 compliant for guaranteed reliability

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