Dorman Autograde Grade 5 Hex Head Cap Screw 5/16-18 x 3-3/4 Inch 25 Pack 170-137

Grade 5 hex head cap screws 5/16-18 x 3-3/4 inch used to replace worn or missing fasteners in automotive and industrial 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 wrenches
• Grade 5 classification provides medium tensile strength for general use
• Thread size 5/16-18 with a length of 3-3/4 inches
• Corrosion-tested to withstand harsh environmental conditions
• Engineered and validated by professional engineers in the United States
• Package contains 25 pieces for multiple repair jobs

Benefits

• Restores structural integrity to components requiring specific fastener specs
• Reduces risk of repeat repairs due to high-quality material construction
• Ensures proper fit and function matching original equipment standards
• Saves time with a bulk pack suitable for various maintenance tasks
• Provides dependable performance under daily driving demands

Application

Ideal for mechanics and DIY enthusiasts needing reliable replacement bolts for suspension, engine, or chassis repairs where Grade 5 strength is specified.

Fitment Notes

• Universal automotive and industrial application based on thread size and length
• Verify required grade and dimensions before installation
• Compatible with Rockford part number 301-598B

Why Choose Dorman?

• Dorman parts are engineered as direct-fit replacements designed to match OE form, fit, and function
• Strong focus on fit, durability, and dependable performance restores vehicles with confidence
• Built with quality materials and validated through testing to stand up to daily demands

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: 2.3 lbs