Military Standard MS21209F1-15 Crescent Steel Insert, Screw Thread

When it comes to your aircraft, even the smallest parts can make a big difference, which is why SkyGeek carries Military Standard MS21209F1-15 Inserts. These seemingly innocuous parts play a big role in helping your aircraft keep it all together. They're designed to give screws something to grab onto, so they don’t back out prematurely when exposed to normal engine vibrations. The screw threads are made from high-quality steel and are designed to resist corrosion, making them perfect for use in a variety of applications. The flight-critical parts improve the safety of your aircraft by preventing screws from coming to lose due to vibrations, pressure changes and other hazards. The screw threads have a basic right-hand thread direction and have a passive surface treatment to help extend their life. The unique coiled shape ensures plenty of surface space for screws to grab onto, with grooves already built-in to allow the screw threads to hold on strong.

While a simple MS21209F1-15 Insert may not look like a big deal to the average person, seasoned aircraft mechanics know what a major role these petite parts play in safety. In order to offer the best price possible, SkyGeek sells these pieces in increments of 50. That way you'll always have more than enough inserts for your needs and we're able to offer you the best pricing by passing on savings on shipping and packaging costs. Our screw inserts are priced low and shipping is always speedy, so you’ll never be grounded while you wait for parts. Need 100 or more pieces? Quantity pricing is available to save you even more.