Welcome to
TriMas Aerospace

TriMas Aerospace, a division of TriMas Corporation, is a leading designer and manufacturer of aerospace specialty products and is comprised of our five businesses: Monogram Aerospace Fasteners®, Allfast Fastening Systems®, Mac Fasteners™, Martinic Engineering™ and RSA Engineered Products. 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. Watch this video to learn more about TriMas Aerospace, which is comprised of Allfast Fastening Systems®, Monogram Aerospace Fasteners®, Mac Fasteners™, Martinic Engineering™ and RSA Engineered Products.

TriMas Aerospace Launches Leadership Development Program

TriMas Aerospace is excited to have launched our inaugural Leadership Development Program. Out of a pool of 56 applicants, we selected 15 participants across five business units representing many different departments. The objective of this program is to provide meaningful leadership training to support the growth of our employees and strengthen our bench of leaders as part of our succession planning process.

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Trimas Leadership Development Program team members 2022

Our Businesses

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 content on substantially all commercial, military, and general aviation platforms in production and in service.

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 like Visu-Lok®, Composi-Lok®, Radial-Lok®, and OSI-Bolt® offer unique solutions for the aerospace industry.


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.

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.