Fluidmaster Inc 6105 Tank to Bowl Bolt Kit

Product Description

The FLUIDMASTER INC 6105 is a 3-bolt tank-to-bowl kit designed to secure a toilet tank to the bowl with a reliable, corrosion-resistant hardware assembly. Each kit includes three 5/16-inch by 3-inch solid brass bolts along with six brass washers, rubber washers, and hex wing nuts. The solid brass construction resists the moisture and mineral exposure common in toilet tank environments. This hardware is installed by licensed plumbers and experienced DIYers during toilet installation, tank replacement, or leak repair where existing hardware has corroded or failed.

This kit is suited for residential and light commercial toilet installations where standard 3-bolt tank mounting is required. It is commonly used when replacing a cracked or damaged tank, retrofitting an older toilet, or completing a full toilet rough-in. The included rubber washers provide a watertight seal between the tank and bowl, while the brass washers distribute clamping load evenly across the porcelain. The hex wing nuts allow hand-tightening with final snugging by wrench.

Key Features

• Includes three 5/16-inch by 3-inch solid brass bolts for a full 3-bolt tank mount
• Six brass washers provide corrosion resistance and even load distribution
• Rubber washers create a watertight seal at the tank-to-bowl interface
• Hex wing nuts allow controlled, easy tightening without specialized tools
• Solid brass construction resists rust and mineral buildup in wet environments

Compatibility

Designed as an OEM-style replacement hardware set for standard 3-bolt residential and light commercial toilet tank-to-bowl installations.

Installation Notes

Installation is typically performed by a licensed plumber or experienced tradesperson. Shut off the water supply and flush the tank to empty it before removing or installing tank hardware. Tighten bolts evenly and gradually, alternating side to side, to avoid cracking the porcelain — do not overtighten. Work conforms to applicable IPC and local plumbing code requirements.

Technical Specifications

• Bolt Size: 5/16 inches x 3 inches
• Bolt Material: Solid Brass
• Washer Material: Brass and Rubber
• Fastener Type: Hex Wing Nut
• Bolts per Kit: 3
• Washers per Kit: 6 Brass, 6 Rubber (implied per bolt count)
• Package Quantity: 10 per case
• Weight: 3.6 pounds

Standard Information

• Brand: FLUIDMASTER INC
• Manufacturer Part Number: 6105