Welcome to
TriMas Aerospace

TriMas Aerospace, a division of TriMas Corporation, is a leading designer and manufacturer of aerospace specialty products and is composed of: Allfast Fastening Systems®, Monogram Aerospace Fasteners®, Mac Fasteners™, TFI Aerospace, Martinic Engineering™, RSA Engineered Products and Weldmac Manufacturing Company. TriMas Aerospace provides our customers with industry-leading products and services that reflect the company’s commitment to market leadership, innovation, and operational excellence.

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A Look Inside TriMas Aerospace

Some of the most highly regarded, innovative, awarded, and value-centered names in aerospace fastening and precision machined components have come together, bringing the industry they serve the advantage of more than 230 years of experience.

TriMas Aerospace Launches Leadership Development Program

TriMas Aerospace is excited to enter into our second year of our Leadership Development Program.  Following a very successful launch and graduation of 14 high potential participants, we have another high-quality group totaling 17 enrolled in the program.  Like last year, this year’s class represents many different disciplines including finance, engineering, operations, supply chain, HR and sales which supports our mission to invest in our people throughout the organization and have a diverse background of experience.  The Leadership Development Program has proven to be an invaluable tool to provide meaningful leadership training to develop future leaders in support of our succession planning process.  Looking forward to another great year.

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Our Businesses

Monogram Aerospace Fasteners logo

Monogram Aerospace Fasteners is a leading designer and manufacturer of permanent threaded blind bolts, collars, and temporary fasteners used in commercial, business, and military aircraft.  Monogram’s trademarked custom engineered fastener solutions, such as Visu-Lok®, Composi-Lok®, Radial-Lok®, and OSI-Bolt® offer unique solutions for the aerospace industry.

Allfast Fastening Systems logo

Allfast Fastening Systems is a leading global manufacturer of solid and blind rivets, blind bolts, temporary fasteners, and installation tools for the aerospace industry, with products for essentially all commercial, military, and general aviation platforms in production and in service.


Mac Fasteners is a high-volume producer of standard aerospace screws and bolts, including NAS, MS, AN, and AS standards used around the world in support of a variety of commercial and military applications.

TFI is a leader in aerospace standard fasteners, commercial and aerospace T-bolts and self-locking nuts. We support the critical applications direct to OEMs, Tier 1s, and distribution.

Martinic Engineering is a leading manufacturer of highly engineered complex parts, serving some of the most demanding applications in the market. Our dedicated and experienced team utilizes state-of-the-art machinery to provide a high level of operational precision during the machining and assembly processes.

RSA Engineered Products is a leading designer and manufacturer of aircraft ducting, high temperature seal connectors, flexible joints, ozone converters, and complex assemblies for commercial and defense applications.

Weldmac Manufacturing Company logo

Weldmac is an industry leading manufacturer of highly engineered metal formed components and complex assemblies in the aerospace, defense and power generation markets.