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 don’t 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