
Heavy Duty Toilet Seat Locking Bolt
Stop toilet seat movement instantly. Engineered with an eccentric metal folding wing, this top-installing bolt provides a rock-solid lock that prevents shifting, sliding, and loosening over time.

Eliminate Slips and Shifting
Standard plastic plugs and expanding rubber sleeves easily wiggle out of place from daily pressure. Our heavy-duty mechanical locking system anchors directly underneath the porcelain mounting holes to hold your toilet seat firmly in position.


Asymmetric Folding Metal Wing
Designed with a pivoting stainless steel plate inside an engineered plastic skeleton. As the top bolt is turned, the eccentric wing swivels out horizontally beneath the mounting hole, creating a secure metal stopper that increases locking force as you tighten.

Direct Top-Down Installation
No more crawling on the bathroom floor or reaching into cramped spaces behind the toilet bowl. Simply drop the folded bolt directly into the mounting hole from above, then tighten the screw cap easily with a standard screwdriver.
Specifications
| Total Length (Folded) | 5.5 cm (2.17 in) |
| Unfolded Wing Width | 2.9 cm (1.14 in) |
| Base Sleeve Diameter | 1.2 cm (0.47 in) |
| Metal Folding Wing Length | 2.1 cm (0.83 in) |
| Screw Cap Outer Diameter | 1.25 cm (0.49 in) |
| Collar Outer Width | 1.8 cm (0.71 in) |
| Screw Thread Diameter | 5 mm |
| Materials | Stainless Steel Bolt & Folding Wing Plate, Engineered Plastic Frame |
Frequently Asked Questions
Q: How does the asymmetric folding wing work inside the toilet hole?
A: The bolt starts in a slim, folded state that easily drops down into the ceramic mounting hole. As you turn the top screwdriver thread, the internal mechanism swivels the eccentric metal wing outward. This wing forms a sturdy horizontal plate that pulls tightly against the underside of the toilet basin rim to lock it in place.
Q: Can I install this without having to reach underneath the toilet bowl?
A: Yes. The lock is specifically engineered for simple top-down setup. You only need to drop the bolt assembly straight down from the top and tighten the screw thread. You do not need to hold any washers or screw nuts from underneath the ceramic basin.
Q: What materials are used to prevent rust and corrosion in the bathroom environment?
A: The core locking bolt and the heavy duty pivoting wing plate are constructed from stainless steel. The outer support skeleton and protective top washer are molded from engineering polymer. This combination ensures long-lasting resistance against moisture, rust, and cleaning solutions.
