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Norm Peterson · 01-13-2018, 08:14 AM

All TTY fasteners are "one-time use", but not all "one time use" fasteners are TTY.

The fasteners that you can get away with re-using with Locktite (or a surface layer of Nature's own threadlock if present) aren't TTY fasteners. They'd be using some other means of ensuring that they stay tight, such as interference thread profiles or some other sort of threadlock compound supplied originally on those fasteners, which is not as reliable on successive loosening/retorquing cycles. These fasteners won't have any angle spec ("turn of the nut", in some engineering disciplines) for tightening them.

Norm

01-13-2018, 08:14 AM	#11
Norm Peterson corner barstool sitter Drives: 08 Mustang GT, 19 WRX Join Date: Jul 2012 Location: Eastern Time Zone Posts: 6,990	All TTY fasteners are "one-time use", but not all "one time use" fasteners are TTY. The fasteners that you can get away with re-using with Locktite (or a surface layer of Nature's own threadlock if present) aren't TTY fasteners. They'd be using some other means of ensuring that they stay tight, such as interference thread profiles or some other sort of threadlock compound supplied originally on those fasteners, which is not as reliable on successive loosening/retorquing cycles. These fasteners won't have any angle spec ("turn of the nut", in some engineering disciplines) for tightening them. Norm __________________ '08 GT coupe 5M (the occasional track toy) '19 WRX 6M (the family sedan . . . seriously)