Wangenbro 3/8 Inch Toilet Seat Screws Replacement Kit for Kohler One-Piece Toilets – Top Mount Hinges with Rubber Anchor Nuts (K-84999 & K-85040-4PC)

Upgrade your Kohler one-piece toilet with the Wangenbro 3/8 inch screws replacement kit

This complete replacement kit restores stability and ease of use for humid bathroom environments. Built for durability, it blends sturdy materials with a practical design so your toilet seat stays firmly in place without fuss.

The kit targets common issues like looseness, wobble, and tricky installations, offering a flexible solution that fits Kohler models with 3/8 inch mounting holes, including K-84999 and K-85040-4PC, as well as other brands that use similar small mounting holes.

Key benefits at a glance

• Compatibility with Kohler one-piece toilets such as San Raphael, Rialto, Rosario, San Martin, Fables & Flowers, Prairie Flowers, Laureate, and more, provided mounting holes are 3/8 inch.
• All-in-one set includes 4 bolts, 4 black rubber anchor nuts, 4 stainless steel gaskets, and spare parts for multiple bathrooms.

Easy, above-the-bowl installation

Unlike bottom-access fixes, the expansion rubber nuts slide through the base hole and tighten from above. This reduces handling and speeds up replacements, making it suitable for DIY installation.

• Durable, rust-resistant construction with stainless steel screws and anti-slip rubber nuts designed to endure humid environments.
• Anti-wobble design uses thick rubber grommets, expanded nuts, and brass-threaded inserts to minimize movement against ceramic holes.

Materials, use cases, and setup tips

Consider this kit when you notice looseness or movement in a seat, or when you’re refreshing hardware across multiple bathrooms. The included spare parts help you stock up for quick future fixes and consistent performance across rooms.

Real-world use scenarios include guest bathrooms, busy family homes with kids and pets, or bathrooms prone to moisture. The kit is designed to support a reliable seat that remains in place during daily routines, while offering a relatively quick and straightforward installation for homeowners.

• Materials that stand up to daily use: stainless steel screws, rubber expansion nuts, and brass threaded inserts for lasting stability.
• Practical benefits you may notice: firmer seating, less wobble, and faster DIY replacements without bottom-side access.

What to check before purchasing

Confirm that your mounting holes measure 3/8 inch (10–12 mm) to ensure a proper fit. This kit is designed for that size range and Kohler style, including the K-84999 and K-85040-4PC ecosystem.