Dorman Autograde Grade 5 Hex Head Cap Screw 5/16-18 x 2-1/4 Inch 50 Pack 170-122

Grade 5 hex head cap screws 5/16-18 x 2-1/4 inch 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 high tensile strength for demanding applications
• Thread size 5/16-18 with a length of 2-1/4 inches
• Corrosion-tested to resist rust and extend service life
• Bulk pack contains 50 pieces for multiple repair jobs
• Engineered by professional engineers in the United States

Benefits

• Restores structural integrity to critical vehicle components
• Reduces the risk of fastener failure under load
• Direct-fit replacement matches OE form and function
• Cost-effective bulk quantity minimizes downtime during repairs
• Dependable performance helps prevent repeat repairs
• Validated through testing to stand up to daily driving demands

Application

Ideal for mechanics and DIY enthusiasts needing reliable hardware for suspension, engine, or chassis assembly where specific Grade 5 strength is required.

Fitment Notes

• Universal automotive fastener suitable for various makes and models requiring 5/16-18 x 2-1/4 inch Grade 5 bolts
• Verify thread pitch and length against original equipment specifications 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. Dorman parts are engineered as direct-fit replacements designed to match OE form, fit, and function, helping ensure a smoother installation and reliable results. Built with quality materials and validated through testing, they're made to stand up to daily driving demands and help reduce the risk of repeat repairs. For a long-lasting fix you can trust, Dorman delivers proven aftermarket solutions that keep your vehicle operating the way it should.

What's in the Box

• 50 Piece bulk pack of Grade 5 hex head cap screws

Item Dimensions

• Package measures 4.9 inches by 3.7 inches by 2.2 inches and weighs 2.8 lbs