American Trading Services, Inc.

American Trading Services, Inc., doing business as Railsupply, is a small business subchapter S corporation headquartered in St. Charles, Maryland, that supplies critical mechanical and electrical spare parts to the Department of Defense as a prime contractor on purchase orders and indefinite delivery contracts, with no subcontracting footprint and no federal set-aside participation beyond individual total small business set-asides on discrete awards.

The vendor's portfolio consists almost entirely of DLA procurement across four divisions. The Defense Logistics Agency Land and Maritime accounts for 865 awards valued at $19.3 million combined potential value (52% of the vendor's total footprint by dollar value and 56% by award count), while DLA Aviation holds 553 awards valued at $10.2 million (30% of dollars). DLA Troop Support Construction and Equipment and DLA Troop Support Hardware together represent $4.2 million in value across 233 awards. The United States Marine Corps accounts for five awards totaling $548 thousand. The vendor competes predominantly in full-and-open procurements, with approximately 30 percent of awards carrying total small business set-aside designations; it holds no GWAC seats, BPA vehicles, or multi-agency contract vehicles and does not participate in 8(a) programs or other SBA certifications.

Capability delivery centers on supplying discrete mechanical and electrical components: valves (check valves, globe valves, regulating valves, butterfly valves, flow-control valves, safety relief valves, and pilot valve assemblies), power transmission equipment (pumps, compressors, motors, cylinders, actuators), fasteners (bolts, screws, nuts, washers, setscrew inserts), electrical assemblies (cable clamps, cable assemblies, connectors, transducers), hose and duct components, wheel assemblies, and specialized equipment including pesticide sprayers, terminal headlights, door handles, and antenna assemblies. Representative awards include a $171.3 million purchase order for 908 non-metallic hose assemblies (March 7, 2024, DLA Land and Maritime, Total Small Business set-aside), a $252.3 thousand definitive contract for antenna assemblies with the Marine Corps (December 6, 2021, Total Small Business set-aside), and a $199.2 thousand purchase order for 55 vehicular doors (September 29, 2023, DLA Land and Maritime, Total Small Business set-aside). Recent activity shows marked decline: the vendor received 86 awards in 2022, 29 in 2023, 27 in 2024, 12 in 2025, and 5 thus far in 2026, signaling significant concentration risk.

The vendor currently holds five active indefinite delivery contracts, all with DLA Land and Maritime, collectively valued at $1.35 million. The most recent is a $350,000 IDC for oil pan components awarded December 15, 2025 (completion December 15, 2026), followed by a $250,000 IDC for wheel assembly components awarded March 26, 2025 (completion March 26, 2026) with four delivery orders issued to date totaling $199.8 thousand. Three additional IDCs—for filler opening caps, electrical cable clamps, and an earlier filler opening cap contract—were valued at $250,000 each. Delivery orders issued under these vehicles carry firm fixed-price structures and span both total small business set-aside and unrestricted procurements, with individual order values ranging from approximately $1,200 to $171,000.

The source characterizes American Trading Services as an "established" federal contractor registered in SAM since 2007, with sustained engagement in DLA procurement processes spanning multiple years and product categories. Performance occurs exclusively at the vendor's St. Charles, Maryland facility, with deliveries to DLA distribution centers across the Continental United States and Overseas Continental United States locations. The vendor operates as a prime contractor without notable subcontracting relationships and brings no parent company relationships or subsidiary structures in the source material.

With over 25 years experience in the industry, ATS Railsupply is an expert in sourcing and supplying rail equipment and parts, with a primary focus on diesel engines and spares.

ATS connects suppliers and customers from all over the globe.