Clark Brothers Instrument Co

Clark Brothers Instrument Co, a Subchapter S Corporation based in Shelby Township and Utica, Michigan, manufactures precision aviation instrumentation and measurement devices as a prime contractor exclusively to the Defense Logistics Agency (DLA), with a small-business posture heavily concentrated in total small business set-aside contracts. The company is a qualified small business vendor with no recorded subcontractor relationships, holding eleven active single-award indefinite delivery contracts with DLA Aviation valued at approximately $557,075 in combined ceiling extending through 2029 and beyond.

Clark Brothers' federal work centers entirely on specialized aviation instrumentation for military aircraft maintenance and logistics. The company manufactures pressure dial gauges, temperature indicators and transmitters, liquid level indicators, flexible shaft assemblies, speedometers, mechanical tachometers, and related adapters—all critical to Department of Defense aviation operations. Representative work includes a $25,605 delivery order for pressure dial gauges under a total small business set-aside with DLA Aviation (March 2026), a $47,310 purchase order for shaft assembly flex components under total small business set-aside (February 2026), and a $70,452 purchase order for 1,568 temperature indicator units on open competition (July 2025).

Customer concentration is extreme and monolithic. DLA Aviation accounts for 803 of the company's 1,150 awards (70% of total count) with $24 million in combined potential value—over 62% of the vendor's entire portfolio. The remaining customer base consists of other DLA divisions: Defense Logistics Agency Land and Maritime (78 awards, $2.2 million) and Defense Logistics Agency corporate (137 awards, $1.4 million). The company holds negligible exposure to the Department of Army and other defense agencies. This concentration is both a strength and a risk; Clark Brothers has embedded itself as DLA Aviation's primary single-source supplier for specialized instrumentation, but dependency on one buyer and one logistics operation creates significant recompete exposure.

The company operates exclusively through single-award indefinite delivery contracts with DLA Aviation. Its top parent vehicles include IDC SPE4A621D5074 (20 task orders, $235 thousand), SPE4A615D5459 (24 task orders, $102 thousand), and SPE4A619D5788 (32 task orders, $94 thousand). These are the underlying procurement vehicles through which DLA Aviation issues firm fixed price delivery orders and purchase orders ranging from under $1,000 to $135,700 per task. The contract portfolio reflects a mature, stable vendor relationship with consistent small-order demand and predictable replenishment cycles typical of aviation spare parts logistics.

Activity has remained stable over the past five years—ranging from 24 to 53 awards annually—but declined sharply in 2025 and 2026 (24 and 6 awards respectively), signaling either seasonal variation or early signals of recompete pressure. Only five awards face ultimate completion within the next twenty-four months with combined potential value of $170,000—a modest recompete cliff, but one dominated by the company's four largest IDC vehicles, all set to run through 2027–2029 with no stated renewal challenges in source data.

The vendor award portfolio is dominated by NAICS 334519 (Other Measuring and Controlling Device Manufacturing) at 479 awards and PSC 6630 (Liquid and Gas Flow, Liquid Level, and Mechanical Motion Measuring Instruments) at 738 awards, confirming narrow specialization in flow and level sensing instrumentation. Combined potential value of $38.4 million with $19.8 million obligated (52% utilization) reflects multi-year IDC ceiling reserves held against future task-order demand. Clark Brothers' federal footprint is entirely DLA-driven, entirely small-business set-aside focused (where applicable), and entirely hardware manufacturing—with no services, no IT, and no geographic or customer diversification.

Manufacturer of instruments and instrument related products such as temperature and pressure gauges, speedometers, tachometers, voltmeters, ammeters, hourmeters, flexible shaft assemblies and various speedometer and tachometer adapters.