Windshield Tie Down Knob

What Is a Windshield Tie Down Knob?

A windshield tie down knob is a small but critically important hardware component found on vehicles with fold-flat windshield frames — most notably classic Jeep CJ models. These large, hand-turn knobs thread into the mounting brackets at either side of the windshield frame, clamping it securely to the cowl and body when in the upright, driving position. On early CJ-series Jeeps, two sizable knobs on the far left and right of the dash are all that hold the windshield frame in place — and removing them is the first step to folding the windshield flat onto the hood.

Why the Fold-Down Windshield Matters

The fold-down windshield is one of the most iconic and enduring features in off-road vehicle history. Rooted in military utility, the ability to fold the windshield flat reduced a vehicle's silhouette and glare in the field. On civilian rigs, it delivers an unmatched open-air driving experience — whether on a beach run, a slow-speed trail, or a classic car show. That heritage lives on in modern Jeep platforms, though the process became progressively more involved with each generation. On the classic CJ5 and CJ7, the tie down knob system made the process quick and tool-free: loosen the knobs, fold down the windshield, and use a strap through the footman loops on the frame and hood to keep everything secure while driving.

Why Replacing a Worn or Broken Knob Matters

Over decades of exposure to UV rays, temperature swings, and repeated use, windshield tie down knobs can crack, strip, or become so brittle that they no longer provide a solid grip. A compromised knob means a windshield frame that isn't properly secured — which introduces unwanted flex, rattles, and even potential safety concerns at highway speeds. Replacing a cracked or damaged knob restores the OE-style clamping function and ensures the windshield stays firmly in position whether raised for driving or tied down when folded.

What to Look for When Shopping

Because this part is highly vehicle-specific, fitment is the number-one consideration. The threading, diameter, and knob profile must match the original hardware for a proper no-drill, direct-fit installation. Key factors to evaluate include:

• Vehicle compatibility: Confirm the knob fits your specific year and model — fitment can vary even across CJ5 and CJ7 production years.
• Material durability: Look for knobs made from high-quality materials that resist cracking and UV degradation over time.
• OE-style design: Replacement knobs should thread in and torque down just like the originals, with no modifications required.
• Finish and appearance: For show-quality restorations or daily drivers, the finish of the knob contributes to the overall appearance of the interior and dash area.

Because the windshield tie down knob is a single, straightforward replacement part, installation is typically quick and requires no special tools. If the windshield hinges are stiff or have never been folded, a little penetrating lubricant on the hinge pivot points goes a long way before attempting to lower the frame.