Washer - Fender - Grade 5 Titanium (5/16 x 0.078 x 1-1/2), Pack of 5

• Allied Titanium Fender Washer
• TRUE TITANIUM(TM) - Stronger, Lighter and Corrosion Free
• Titanium is good for use in or near saltwater
• General Tolerance: +0/-0.003 inch
• Meets ASME B18.22.1; Grade 5 (Ti-6Al-4V) Titanium with Polished Finish

These fender washers are TRUE TITANIUM(TM), specifically Grade 5 (Ti-6Al-4V). Grade 5 titanium is a common aerospace alloy that has been used in commercial aircraft for decades and it has only been recently that Grade 5 titanium has become affordable to the average person.
As the name in implies, fender washers were originally developed to put fenders on cars in the automobile manufacturing plants. Fenders are made out of sheet metal and the fender washer spreads the load of the screw or bolt around the head, supporting the sheet metal. The strength and springiness of Grade 5 titanium make it the perfect metal for fender washers. So whether you are working with fenders or something else that needs to be securely supported around the fastener's head, these fender washers are amazing.
So obviously, they are strong and light, but they are also corrosion free, even in saltwater. So the problems of steel and stainless steel fender washers failing due to corrosion simply goes away with these Grade 5 titanium fender washers. Also, the problem of rust stains ruining what you are fastening goes away as well.
TRUE TITANIUM(TM) is a trademark to establish that this product is manufactured from solid Titanium, rather than a coating, plating or color. TRUE TITANIUM, Tough-Ti, the AT Logo, the Ring around our high strength screws, LOOK FOR THE RING, AFFORDABLE TITANIUM NOW and ALLIED TITANIUM are all trademarks of Allied Titanium, Inc.