A bolt is a bolt, is a bolt, is a bolt...

Right... as long as it doesn't loosen in service under vibration and shock loads!

Otherwise, it’s no longer a bolt, but a major problem with potentially disastrous consequences,
especially in mission-critical applications.

So far, theres been no bullet-proof solution
to the problem of vibration-induced bolt loosening. Now there is the...

Positively Locked - Precisely Where You Want,
And With Indefinite Reuse Of All Components

TrueLock Bolt For Helicopter Main Rotor
1¼ Inch-Diameter, Heavy Series — Titanium

The TrueLock Bolt™ (*) provides positive, continuous, mechanical locking, and unlocking, in an infinite number of positions, precisely in the exact final clamping position of the bolted connection – all at substantial cost savings.



The TrueLock Bolt passed successfully rigorous vibration and shock testing to US DOD:

MIL-STD-167-1, Vibration - US Navy 
MIL-S-901D, Shock - US Navy

MIL-STD-810F Method 514.5, Vibration - Aerospace 

for use in super-critical industrial, defense, and aerospace applications,
such as – but not limited to – landing gear and jet engine mounts of commercial and military aircraft,
helicopter main and tail rotor bolting, gas turbines, weapons, ships, aircraft carriers, and submarines;
all applications where failure is not an option.


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TrueLock Bolt™ Proudly Invented And Made In America.
(*) Patented

Pictures courtesy of US Navy, US Air Force, and US Army.

TrueLock Bolt™ Design Protected Under International Patent Laws
Copyright 2000-2012 - TrueLock Bolt Company - All Rights Reserved