Genuine Briggs B321603 Parts Bag. This bag comes with the two nuts and bolts. Which are made of Brass. The supply line nut and washer are also in this kit. The supply line nut is plastic. However the washer is rubber. The two rubber washers for the tank bolts are also in this kit. Along with two brass support washers. 

This kit is a parts bag that replace the tank bolts and supply line nut. Also All of the washers and nuts are in this kit. This kit works with many Briggs toilet tanks. Some of the tanks this kit works with are 4400, 4401, and 4408. Also this kit has many more tanks it works with. We only offer Genuine Briggs toilet parts. 

In conclusion, the Genuine Briggs B321603 Parts Bag comes complete. It has all of the bolts, nuts and washers needed. It also fits many different tanks. All of the parts that comes with this kit are Genuine. Therefore they are going to work on the tanks it is listed for. Also We only list items on the model numbers they work with. 

• Genuine Briggs Parts
• Two bolts
• Two nuts
• Two washers
• Supply Line Nut and Washer
• Two rubber washers