X0101 EFFECT 33 LIVE 2011-04-15 10:00:00

S-3

0000842633 TRIMAS CORP 333-172525 0001194690 KEO CUTTERS INC 333-172525-20 0001194221 ARROW ENGINE CO 333-172525-19 0001240688 HIGHLAND GROUP CORP 333-172525-18 0001195618 DRAW TITE INC 333-172525-17 0001194217 COMPAC CORP 333-172525-16 0001514123 Dew Technologies, Inc. 333-172525-15 0001514125 Hi-Vol Products LLC 333-172525-14 0001194688 LAKE ERIE SCREW CORP 333-172525-13 0001195621 LAMONS METAL GASKET CO 333-172525-12 0001194193 MONOGRAM AEROSPACE FASTENERS INC 333-172525-11 0001195614 NI INDUSTRIES INC 333-172525-10 0001194206 NORRIS CYLINDER CO 333-172525-09 0001194818 RICHARDS MICRO-TOOL INC 333-172525-08 0001194877 RIEKE CORP 333-172525-07 0001194800 RIEKE LEASING CO INC 333-172525-06 0001194804 RIEKE OF MEXICO INC 333-172525-05 0001237457 HAMMERBLOW CORP 333-172525-04 0001195035 TRIMAS CO LLC 333-172525-03 0001514121 Towing Holding LLC 333-172525-02 0001514120 TriMas International Holdings LLC 333-172525-01