How to prevent screws from loosening: Loctite, Safety Wire, Jam nuts & More Part 1 of 2

Part 1 of 2: 9 different techniques on how to keep threaded fasteners in their place: 1) Torque Wrench 2) lock washer 3) Nylon lock nut 4) Castle nut 5) Jam Nut 6) Belleville washers 7) Nord lock washers 8) Safety wire 9) Loctite