1964-72 Door Hinge Bolt Screws (Hex Head)

1964-72 Door Hinge Bolt Screws (Hex Head)

A 1964–1972 GM Door Hinge Bolt Screw Set (Hex Head) is a precise hardware package designed to mount heavy stamped steel door hinges to both the vehicle’s body cowl pillar and the door shell. These are a crucial component for factory-correct muscle car and classic truck restorations, ensuring your doors line up properly, remain securely supported, and open or close without sagging.

Because these bolts endure constant vertical shear stress every time a heavy door swings open, they are manufactured as heavy-duty Grade 9.8 high-strength steel with specialized integrated washers.

• Thread Pitch: 5/16″–18 Coarse Thread
• Length: 1-1/8″ to 1-1/4″ under the head flange
• Drive Style: 1/2″ Indented Hex Head
• Washer Type: 7/8″ outer diameter loose or captive/integral SEMS style coned tooth washer
• Point Style:

  Specialized “Dog Point” pilot tip designed to align into the body cowl cage nuts without cross-threading during assembly

• Finish: Black Phosphate or manganese finish, which helps resist raw-metal corrosion while holding topcoat paint cleanly.

These standardized GM hex bolts fit a massive array of models across the A-body, F-body, and X-body platforms spanning 1964 to 1972.