Not an SEC registrant

Mcclain Mechanical Systems, INC

Customers

3 prime contractors

Suppliers

None disclosed

Largest customer

—

No % disclosed

Named-customer revenue

—

No estimate available

Band height is the estimated dollar value: the disclosed share × the discloser's revenue for that period (latest full year where available) or federal dollars obligated. Each side is scaled on its own; dashed outlines are named without a figure. Click a band to open its source.

Federal subcontracts received 3

Prime contractors that subcontracted federal work to this company. From USAspending.gov subaward reports; amounts are as reported by the prime contractor, latest report per subaward, $500K+ a year.

Company	Subawards	Fiscal year	Count	Trend	Largest subaward
Harper Construction Company, INC.	$10.1M	FY 2026	3	$23.5M → $19.2M → $10.1M	N6247325F0354
SITE UTILITIES - SEWER; PLUMBING; HEATING, VENTILATING AND A/C Prime award N6247325F0354 on USAspending.gov ↗ Subaward 125003-0010: $3.4M · Department of Defense (DOD)
RQ Construction, LLC	$6.1M	FY 2026	2	$14.7M → $6.1M	N6247325F0458
PLUMBING Prime award N6247325F0458 on USAspending.gov ↗ Subaward 24-0319-011: $3.0M · Department of Defense (DOD)
Dpr-rq Construction, LLC	$6.0M	FY 2026	2	$2.6M → $6.0M	N6247325F0686
PLUMBING AND SITE GAS Prime award N6247325F0686 on USAspending.gov ↗ Subaward 25-0327-001: $3.0M · Department of Defense (DOD)

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