Don Yeam

Don Yeam, doing business as Unitek Engineering, manufactures high-precision mechanical components and assemblies for military weapon systems and vehicles as a prime contractor exclusively, operating as a self-certified small disadvantaged business and Asian-Pacific American-owned sole proprietorship based in Los Alamitos, California. The company is a manufacturer of goods competing predominantly under total small business set-asides, though recent activity shows a shift toward full-and-open purchase orders from the Defense Logistics Agency.

Unitek Engineering's capability portfolio centers on precision-engineered defense components. Representative work includes a $25,847.50 firm fixed-price purchase order from DLA Land and Maritime (September 2024) for quick release locks; a $30,137.50 contract (November 2022) for cocking pieces used in firing mechanisms; and a $19,701.00 purchase order (January 2025) for operating levers. The company's product range spans quick release locks, operating levers, feed adjustment tools, gun component retainers, cams, ejectors, cocking pieces, brackets, slides, charger catches, and ammunition adapters—all identified by National Stock Number and manufactured to military specifications. Contract values typically range from $1,210 to $30,137.50.

Customer concentration is extreme and stable. DLA Land and Maritime accounts for 91 of the company's 106 total awards and $488 thousand of the $659 thousand combined potential value (74% of portfolio dollars). The Department of the Army Materiel Command Contracting Command Detroit Arsenal holds five awards worth $158 thousand. DLA Aviation and DLA Troop Support Hardware round out the active set with five additional awards totaling approximately $13 thousand. The vendor serves no other federal agencies. The top NAICS categories are Small Arms, Ordnance, and Ordnance Accessories Manufacturing (58 awards) and Mechanical Power Transmission Equipment Manufacturing (20 awards), with the bulk of PSC coding in Guns through 125 mm and miscellaneous power transmission equipment.

Activity declined sharply post-2023. The vendor received twelve awards in 2022, six in 2023, six in 2024, three in 2025, and two year-to-date in 2026. The most recent award, a $10,933.50 purchase order from DLA Land and Maritime, closed in March 2026. Four awards carrying combined potential value of $45 thousand reach ultimate completion within the next twenty-four months, exposing modest recompete risk. The vendor sits on a single parent vehicle, an Indefinite Delivery Contract (DAAE2001D0049) with the Department of the Army, against which three task orders have been placed. Unitek Engineering maintains no subcontract relationships; all 106 awards are prime awards with no named subcontractors. SAM.gov registration dates to 2001, indicating sustained DLA contracting tenure, though recent award velocity has declined materially compared to the 2022 peak.