Guill Tool & Engineering Co Inc.

Guill Tool & Engineering Co Inc., Guill Defense Division, a small business manufacturer based in West Warwick, Rhode Island, supplies precision-machined naval hardware and pipe-fitting components to the Department of Defense as a prime contractor (87% of recent awards) and as a subcontractor to major defense shipbuilders, competing predominantly under Total Small Business set-asides and full-and-open procurements. The company is a Subchapter S Corporation with over 55 years of defense manufacturing experience and recently received a $205.862 thousand Department of Energy Office of Science research grant for advanced microlayer co-extrusion technology development.

Guill Defense's capability portfolio centers on precision-machined naval components: spanner nuts, pipe flanges, self-locking nuts, valve stems and caps, union assemblies, lock rings, adapter fittings, venturi valves, plunger specialties, and related piping system hardware. Representative prime work includes a $108.566 thousand Total Small Business purchase order from Naval Supply Systems Command for 700 PSI pipe flanges (October 2024), an $85.650 thousand NAVSUP award for 1.50 x 1.00 inch NPS flanges to Naval Sea Systems Command specification (September 2024), and a $47.760 thousand NAVSUP contract for STEM/disc assemblies (October 2024). Work is performed at the West Warwick facility and delivered to Portsmouth Naval Shipyard, Joint Base Pearl Harbor-Hickam, and other Navy sites.

Customer concentration is extreme and Navy-dominant. The top three funding agencies account for 97% of recent awards by count: Naval Supply Systems Command leads with 350 awards and $5.2 million combined potential value, followed by Defense Logistics Agency Land and Maritime (87 awards, $545 thousand), and Naval Sea Systems Command (76 awards, $466 thousand). The potential-value ranking mirrors the award-count ranking — Navy supply dominates both dimensions, leaving little customer diversification. Of 576 total recent awards tracked in the source, 87% are prime contracts; the remaining 13% are subcontracts, primarily to Electric Boat Corporation on submarine construction programs (SSN 804, SSN 814, SSN 815, SSBN 826, and Columbia-class missile tube production), with one recent subcontract to Textron Systems Corp for material purchases.

Guill Defense operates primarily through individual purchase orders and blanket purchase agreements rather than task orders under multi-award IDIQs. The top parent vehicles listed carry minimal task-order activity (one task order each across several Navy indefinite delivery contracts), reflecting the vendor's posture as a spot-buy supplier of standard components rather than a schedule or GWAC holder. The company's award category concentration underscores its product focus: "Other Metal Valve and Pipe Fitting Manufacturing" (130 awards), "Industrial Valve Manufacturing" (46 awards), "Ship Building and Repairing" (44 awards), and "Fabricated Pipe and Pipe Fitting Manufacturing" (38 awards). Top procurement service codes are "Hose, Pipe, Tube, Lubrication, and Railing Fittings" (166 awards) and "Valves, Nonpowered" (121 awards).

Activity shows growth trajectory from 2022 through 2024 (36 awards, 26 awards, 61 awards), with a sharp deceleration in 2025 (14 awards) and minimal activity in 2026 so far (1 award). This contraction may signal demand cycle variation or increased order size per award rather than customer loss. The source spans awards from 1980 onward; the listed recompete-cliff block does not populate in the vendor_award_portfolio data, suggesting no aggregated recompete-risk summary is available in the source. Individual award due dates cluster in the 2024–2026 window, but without a structured recompete analysis, the magnitude of near-term renewal exposure is not quantified.

Guill Defense's subcontract footprint is anchored by Electric Boat Corporation, where it supplies specialized fasteners, components, and materials for Virginia-class (SSN 804, SSN 814, SSN 815) and Ohio-class replacement (SSBN 826) submarine construction, including weapon cradle assemblies, secondary propulsion unit cabling devices, fire control switchboard components, and long-lead materials for SSN 814 and SSN 815. The recent August 2025 sub awards with Electric Boat for SSN 814 and SSN 815 long-lead items suggest ongoing multi-year supplier relationship as the submarine industrial base scales production. The Textron Systems material purchase sub award (February 2025) represents limited diversification into adjacent prime relationships. Across both prime and sub postures, Guill Defense operates as a component-supply specialist with minimal IT services, logistics, or business services exposure — revenue is driven by volume of small, standardized naval hardware orders rather than large systems-integration contracts.

Guill Tool has supplied precision machined Level 1/SUBSAFE, Level 1, Nuclear and non-level fittings, valves, flanges and other components to the Defense industry since 1962. ISO-9001, MIL-I-45208A, MIL-STD-45662A. Veteran owned.