Tri-Mack Plastics Manufacturing Corp

Tri-Mack Plastics Manufacturing Corp, a small business manufacturer based in Bristol, Rhode Island, supplies precision-engineered thermoplastic aerospace and defense hardware components to the Department of Defense as a prime contractor on nearly all of its federal work. The company manufactures bushings, sleeves, shrouds, washers, and related fastening components used in military aircraft maintenance and repair, competing exclusively full-and-open (no set-aside designation across the prime footprint, though some purchase orders originate from Total Small Business set-aside solicitations).

Customer concentration is extreme: the Defense Logistics Agency Aviation accounts for 569 of 839 prime awards (68% of volume) and $17.1 million of $29 million combined potential value across all federal work. The broader Defense Logistics Agency—including Aviation, Troop Support Construction and Equipment, Troop Support Hardware, and Land and Maritime divisions—encompasses 746 awards and $21.1 million in potential value combined, or 73% of the total portfolio. Air Force, Navy, and Army account for the remaining 47 prime awards. Tri-Mack has worked with eight distinct customer agencies total, but DLA-family customers dominate so completely that losing even one DLA division would materially reshape the business.

Tri-Mack operates under five primary Indefinite Delivery Contracts with DLA Aviation. The contracts carry low individual ceilings ($127 thousand to $200 thousand) and are structured as single-award vehicles: Indefinite Delivery Contract SPE4A613D5120 (15 task orders), SPM4A610D5362 (14 task orders), SPE4A614D5196 (13 task orders), SPE4A617D6546 (12 task orders), and SPM4A611D0198 (11 task orders). These IDCs enable DLA Aviation to order precision components on a firm fixed-price basis without repeating full procurement cycles. Tri-Mack has held a long-standing IDC valued at up to $250,000 (awarded September 23, 2020, expiring September 22, 2025), which has anchored its DLA relationship for years.

Recent prime awards illustrate the work: a $81,390 purchase order awarded December 10, 2025, for 1,000 bushing-sleeve units delivered to DLA Distribution Depot Oklahoma over 658 days; a $42,430 purchase order (January 23, 2025) for 1,312 bushing-sleeve units; and a $28,763 Total Small Business set-aside purchase order (February 15, 2025) for bushings and sleeves. Award volume has grown modestly—four awards in 2022, fifteen in 2025—but remains concentrated in small-dollar purchase orders and delivery orders averaging under $35,000 each. Combined dollars obligated total $19.8 million (68% of potential value), indicating strong execution. Only four awards face ultimate completion inside the next twenty-four months (combined potential value $204,000), leaving minimal recompete cliff exposure in that window.

Tri-Mack subcontracts to Sikorsky Aircraft Corporation on Combat Rescue Helicopter (CRH) work, supplying thermoplastic plenum panels, covers, and structural components for five recent sub-awards (July 2025, January 2025, October 2024, June 2024, May 2024). Sub-work accounts for only 1% of the recent award footprint and carries no dollar figures in the source, indicating that Tri-Mack's federal revenue is anchored to its DLA prime relationship rather than tier-two position on defense primes.

The primary category distribution reflects the hardware mission: Ball and Roller Bearing Manufacturing (NAICS 332991) dominates at 499 awards, followed by Mechanical Power Transmission Equipment Manufacturing (78 awards) and Hardware Manufacturing (47 awards). At the PSC level, Bearings and Plain Unmounted components account for 733 awards; Bushings, Rings, Shims, and Spacers for 62 awards. This specificity signals a vendor locked into component supply rather than systems integration or services, with limited flexibility to pivot away from DLA Aviation without substantial capability repositioning.