5/16"-18 x 3/4" Hex Head Bolts – Coarse Thread – Pack of 1,000

These 5/16"-18 x 3/4" hex head bolts are designed for garage door installation, commercial door hardware, brackets, operator mounting, and general fastening applications.

The 5/16"-18 UNC coarse-thread size is commonly used throughout garage door and overhead door hardware assemblies. The standard hex head allows fast installation with a socket, wrench, or nut driver.

This listing contains a bulk pack of 1,000 bolts, making it ideal for professional garage door installers, service companies, contractors, maintenance departments, and shops that regularly use 5/16"-18 hardware.

Specifications

Key Features

• Bulk pack of 1,000

• 5/16" bolt diameter

• 18 threads per inch

• 3/4" bolt length

• Standard hex-head design

• Compatible with matching 5/16"-18 nuts

• Suitable for residential and commercial garage door hardware

• Convenient bulk quantity for professional installers and service vehicles

Common Garage Door Applications

5/16"-18 x 3/4" hex bolts are commonly used with compatible:

• Garage door brackets

• Track hardware

• Operator mounting components

• Angle and support hardware

• Door-arm assemblies

• Commercial sectional door components

• General garage door repair hardware

• Shop and fabrication applications

Exact fastener requirements vary by door and hardware manufacturer. Always match the replacement bolt to the original hardware specifications.

Compatibility & Selection

Before ordering, verify:

• Bolt diameter is 5/16"

• Thread pitch is 18 TPI

• Required bolt length is 3/4"

• The mating nut or threaded component uses 5/16"-18 UNC threads

Do not use a 5/16"-18 bolt with hardware requiring a different diameter or thread pitch.

Quantity Note

This listing contains 1,000 individual 5/16"-18 x 3/4" hex head bolts.

Selecting a quantity of 1 on the product page means you are purchasing one pack of 1,000 bolts, not one individual bolt.

Installation Note

Use the appropriate socket or wrench and tighten according to the requirements of the hardware being assembled.

Avoid excessive torque, which can damage the bolt, mating hardware, or mounted component.

For structural, overhead, or safety-critical applications, always follow the fastening requirements specified by the garage door or equipment manufacturer.

5/16"-18 x 3/4" Hex Head Bolts – 1,000 Piece Bulk Pack

Bulk pack of 1,000 5/16"-18 x 3/4" hex head bolts with coarse UNC threads for garage door hardware, commercial door installations, maintenance, and general fastening applications.