Dorman Autograde Grade 5 Hex Head Cap Screw 5/16-18 x 3-1/2 Inch for Automotive Repair 170-135

Grade 5 hex head cap screws sized 5/16-18 x 3-1/2 inch used to replace worn or missing fasteners in automotive repair applications.

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 tensile strength for general automotive use
• Thread size is 5/16-18 with a length of 3-1/2 inches
• Corrosion-tested to withstand harsh underhood environments
• Engineered by professional engineers and quality control specialists in the United States
• Package contains 25 pieces for multiple repair jobs

Benefits

• Restores structural integrity to components requiring specific fastener grades
• Reduces the risk of repeat repairs caused by fastener failure
• Ensures a secure fit that matches OE form and function
• Saves time with a direct-fit replacement that requires no modification
• Provides confidence through rigorous durability testing
• Offers bulk quantity value for shops or extensive maintenance tasks

Application

Ideal for mechanics and DIY enthusiasts needing reliable Grade 5 fasteners for engine mounts, suspension components, or general chassis assembly where specific thread pitch and length are critical.

Fitment Notes

• Universal automotive application based on thread size and grade rather than specific vehicle model
• Verify required thread pitch and length against your vehicle's service manual 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 Pack of Grade 5 Hex Head Cap Screws

Item Dimensions

• 4.9 inches x 3.7 inches x 2.2 inches
• Weight: 2.1 lbs