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Insufficient Thread Engagement

Entry DateApril 10, 1998
Issue Number98-006-VEH
NameGary L Foster
AddressUnited StatesMap It (opens in a new tab)
CommitteeVehicle Committee
StatusClosed
Summary of Issue

Insufficient thread engagement should be added to the OOSC.

Justification or Need

Is there a point where wheel nuts are not engaged enough on a wheel stud and are an imminent hazard. If a fastener holds its torque, it has sufficient thread engagement. If a nut holds with insufficient threads, it will either quickly come loose or break. This will lead to a condition of ineffective fasteners already outlined in the OOSC.

Request for Action

Determine if there is a limit and to thread engagement that results in imminent hazard and if so, create an OOSC condition.