Dorman Autograde Grade 5 Hex Head Cap Screw 5/16-18 x 4 Inch for Automotive Repair 170-140

Grade 5 hex head cap screws sized 5/16-18 x 4 inches used to replace worn or missing fasteners in automotive repairs.

Built to meet the manufacturer's design intent for reliable service, these bolts are manufactured using durable materials and corrosion-tested to ensure required strength and longevity.

Key Features

• Hex head design allows for easy installation with standard tools
• Grade 5 classification provides medium carbon steel strength
• Thread size is 5/16-18 with a 4-inch length
• Corrosion-tested to withstand harsh underhood environments
• Engineered and validated by professional engineers in the United States
• Compatible with various industry part numbers including Papco and Rockford

Benefits

• Restores structural integrity to critical vehicle assemblies
• Reduces the risk of repeat repairs caused by fastener failure
• Ensures a direct-fit replacement that matches OE form and function
• Provides dependable performance for daily driving demands
• Offers a cost-effective solution compared to dealer-only parts
• Delivers peace of mind with trustworthy quality control

Application

Ideal for mechanics and DIY enthusiasts needing high-strength fasteners for suspension, engine, or chassis repairs where specific Grade 5 specifications are required.

Fitment Notes

• Universal automotive application based on thread size and grade rather than specific vehicle model
• Verify thread pitch and length requirements before installation

Why Choose Dorman?

• Choosing Dorman aftermarket replacement parts is a smart way to restore your vehicle with confidence, thanks to a strong focus on fit, durability, and dependable performance.

What's in the Box

• 25 Piece Bulk Pack of Cap Screws

Item Dimensions

• 4.9in x 3.7in x 2.2in, 2.4lbs