Keystone Compliance LLC
New Castle, PA
- UEI
- KFS9UML9ZPJ6
- CAGE
- 5EF59
- Primary NAICS
- 541380 Testing Laboratories and Services
- SAM.gov registration
- Active through
Company facts
- Self-certified in SAM.gov
- Entity structure
- Corporate Entity (Not Tax Exempt)
- NAICS codes registered in SAM.gov
- SAM.gov registration date
- Physical address
- 131 N Columbus Interbelt, New Castle, PA 16101, USA
- Website
- keystonecompliance.com
- Founded
- 2007
- Employees
- 11-50
- Estimated annual revenue
- $1M-$10M
- Industry
-
- Industrials
- Commercial & Professional Services
- Professional Services
- SIC code
- 87 Engineering & Management Services
Registration and certifications come from SAM.gov and the SBA; company details from public web sources. Updated .
Recent federal awards
| Award | Agency | Obligated | Awarded |
|---|---|---|---|
| Micropurchase of EMC attenuation testing | Naval Air Warfare Center | $4,050 | |
| MIL-PRF-81705E | Naval Air Warfare Center | $3,450 | |
| Service, testing | Naval Sea Systems Command | $5,250 | |
| Mslan EMI testing | Naval Sea Systems Command | $13,000 | |
| EMC testing | Naval Sea Systems Command | $5,050 |
About Keystone Compliance LLC
Keystone Compliance LLC is a for-profit limited liability corporation registered in SAM.gov since April 2009 that specializes in providing electromagnetic compliance (EMC) and electromagnetic interference (EMI) testing services to the federal government. The company serves as a qualified testing service provider for military and commercial applications, with a longstanding relationship as a primary supplier to the Department of Defense Navy. Keystone Compliance maintains testing facilities in New Castle, Pennsylvania, and has demonstrated consistent capability in supporting defense operations through specialized electromagnetic validation and surge protective device testing services.
Keystone Compliance's federal contract work reflects its core expertise in specialized testing services, most notably exemplified by a $4,050 firm fixed-price purchase order awarded by the Naval Air Warfare Center in August 2025 for electromagnetic compatibility attenuation testing, with completion scheduled for August 27, 2026. Beyond its prime contract activity, Keystone Compliance has secured multiple subcontract awards as a specialized testing vendor, including EMC testing services in accordance with MIL-STD-461G standards for Astrobotic Technology Inc. (awarded January 24, 2025) and environmental testing services for test articles under Battelle Memorial Institute contracts spanning from December 2021 through October 2024. These subcontracts with Battelle Memorial Institute—ranging from February 2024 through October 2024—indicate sustained demand for Keystone Compliance's environmental testing capabilities in support of government equipment research and development initiatives. The contractor's federal award history demonstrates established competency in critical electromagnetic compliance validation and environmental testing services essential for defense systems qualification, with no small business set-asides applied to its documented prime contract activity.
Quick answers
What is Keystone Compliance LLC's UEI?
Keystone Compliance LLC's Unique Entity ID (UEI) in SAM.gov is KFS9UML9ZPJ6.
What is Keystone Compliance LLC's CAGE code?
Keystone Compliance LLC's CAGE code is 5EF59.
What is Keystone Compliance LLC's primary NAICS code?
Keystone Compliance LLC's primary NAICS code is 541380 (Testing Laboratories and Services).
Where is Keystone Compliance LLC located?
Keystone Compliance LLC's physical address in SAM.gov is 131 N Columbus Interbelt, New Castle, PA 16101, USA.
Is Keystone Compliance LLC registered in SAM.gov?
Yes. Keystone Compliance LLC's SAM.gov registration is active through January 27, 2027.
What is Keystone Compliance LLC's most recent federal award?
Keystone Compliance LLC's most recent federal contract award is Micropurchase of EMC attenuation testing (N6833525P0300), from Naval Air Warfare Center, on August 28, 2025.
On GovTribe
See Keystone Compliance LLC's full federal record
- Federal contract awards
- Subcontracting relationships
- Funding analysis by agency, NAICS and set-aside
- Similar vendors