Winsert (Altus Capital-backed) Acquires Mack Tool & Engineering

Winsert Acquires Mack Tool & Engineering

August 11, 2025

Manufacturing

Winsert, an advanced alloy components manufacturer based in Marinette, Wisconsin, has acquired Mack Tool & Engineering, a precision machining firm headquartered in South Bend, Indiana. The deal expands Winsert’s manufacturing capabilities and strengthens its presence in aerospace and medical end markets by adding Mack’s NADCAP- and AS-9100-certified machining expertise.

Altus Capital Partners Acquires Winsert, LLC

March 2, 2022

Manufacturing

Altus Capital Partners completed a platform acquisition of Winsert, LLC, a Marinette, Wisconsin-based manufacturer of specialty alloys and precision metal engine components. The private equity firm will partner with Winsert's existing management to drive growth across trucking, transportation, power generation and aerospace end markets through organic expansion and bolt-on acquisitions; financial terms were not disclosed.

Altus Capital-backed Winsert Acquires Alloy Cast Products, Inc.

October 4, 2022

Manufacturing

Winsert, a portfolio company of Altus Capital Partners, has acquired Alloy Cast Products, Inc. (ACP), an investment casting and machining manufacturer of exotic cobalt alloys based in Kenilworth, New Jersey. The transaction is Altus' first add-on for Winsert since acquiring the platform earlier in 2022 and expands Winsert's casting and machining capabilities for aerospace, power generation, emissions control, and OEM customers.

Arc Adaptive Machining Solutions Acquires H&W Tool

February 25, 2025

Aerospace & Defense

Arc Drilling (now rebranded as Arc Adaptive Machining Solutions) has acquired H&W Tool, a provider of airfoil machining services for the aerospace, defense and power generation markets. The combination—backed by majority owner Washington Equity Partners—creates a vertically integrated airfoil machining platform with expanded EDM, adaptive machining, waterjet and grinding capabilities across six U.S. manufacturing sites.

TriMas Acquires Weldmac Manufacturing Company

February 23, 2023

Manufacturing

TriMas Corporation signed an agreement to acquire the operating net assets of Weldmac Manufacturing Company, a family estate‑owned designer and manufacturer of high‑performance metal fabricated components for aerospace, defense, space launch and commercial power markets. The deal (expected to close in the coming months) will fold Weldmac into TriMas Aerospace to expand TriMas’s engineered structural solutions and manufacturing capabilities.

Mno-DREK, LLC Acquires Walerko Tool & Engineering Corporation

March 18, 2021

Manufacturing

Mno-DREK, LLC, a Dowagiac, Michigan-based holding company, has acquired Walerko Tool & Engineering Corporation of Elkhart, Indiana. The family-owned precision machining and tooling business, founded in 1952 and sold by owner Ed Walerko as part of his retirement, will be integrated into Mno-DREK’s portfolio to expand its precision machining and tooling capabilities across aerospace, automotive and industrial end markets.