UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 8-K

CURRENT REPORT

PURSUANT TO SECTION 13 OR 15(d) OF THE

SECURITIES EXCHANGE ACT OF 1934

Date of Report (Date of earliest event reported): September 10, 2012

ACTUANT CORPORATION

(Exact name of Registrant as specified in its charter)

N86 W12500 Westbrook Crossing

Menomonee Falls, Wisconsin 53051

Mailing address: P.O. Box 3241, Milwaukee, Wisconsin 53201

(Address of principal executive offices) (Zip Code)

Registrant’s telephone number, including area code: (262) 293-1500

N/A

(Former name or former address, if changed since last report.)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions (see General Instruction A.2. below):

On September 10, 2012, Actuant Corporation (the “Company”) issued a press release to announce the expiration and results of its offer to exchange (the “Exchange Offer”) $300,000,000 principal amount of 5.625% Senior Notes due 2022, which are registered under the Securities Act of 1933 (the “new notes”), for $300,000,000 principal amount of outstanding 5.625% Senior Notes due 2022, which have not been registered under the Securities Act of 1933 (the “old notes”). All of the old notes were validly tendered and not validly withdrawn prior to the expiration of the Exchange Offer. Accordingly, on September 10, 2012, the Company delivered an aggregate principal amount of $300,000,000 of its new notes for the old notes accepted for exchange pursuant to the Exchange Offer.

A copy of the press release is attached as Exhibit 99.1 to this Form 8-K.

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.