Battery pack enclosure with turned flange

A traction battery pack assembly, comprising:

• first and second pieces of an enclosure having an interior area;
• an attachment rim of the first piece, the attachment rim disposed at a periphery of the first piece;
• and
• at least one stand-off of the attachment rim, the at least one stand-off includes a platform portion and a turned flange,
• the platform portion extends in a first direction outward from the interior area to the turned flange, the platform portion provides an aperture,
• the turned flange extends in a second direction from the platform portion to an end face, the second direction is transverse to the first direction,
• the aperture is configured to receive a fastener that clamps the end face against the second piece,
• wherein the turned flange extends away from the platform portion in the second direction such that the end face of the turned flange is spaced a distance in the second direction from all portions of the platform portion.