PSC H335

Overview

The Product Service Code (PSC) system is the standardized U.S. federal classification for goods and services procured by civilian and defense agencies. PSCs populate FPDS data element 8A to identify what was bought, support fiscal reporting and analysis, and are maintained through the PSC Manual and related Acquisition.gov guidance. ¹

PSC H335 — Inspection- Service and Trade Equipment — is the PSC entry used to classify inspection and testing services for service-and-trade equipment. The PSC Manual lists H335 as “Inspection- Service and Trade Equipment,” states that it “Includes: Commercial Testing and Laboratory Services,” and expressly “Excludes: Medical and Dental Laboratory Services.” ¹

See also on G2X:

• H335
• J035
• H334

What this PSC covers

• Inspection services for service-and-trade equipment (general category). ¹
• Commercial testing and laboratory services associated with equipment inspection. ¹
• Condition assessments and technical inspection reports for trade equipment. ¹
• Safety, compliance, and performance inspections against applicable standards. ¹
• Exclusion of medical and dental laboratory services from this PSC. ¹

Related NAICS and PSC codes

Type	Code	Descriptor
PSC	H334	Inspection- Metalworking Machinery
PSC	H336	Inspection- Special Industry Machinery
PSC	H341	Inspection- Refrigeration, Air Conditioning, and Air Circulating Equipment

(Entries above are from the PSC Manual grouping and service-code listings.) ¹

Usage in FPDS

PSCs, including H335, are recorded in FPDS data element 8A and should represent the predominant product or service procured on a contract action. The PSC Manual directs agencies to select the PSC that best reflects the predominant acquisition when multiple items or services are present. ¹

Frequently asked questions

• Q: What specifically is included under PSC H335?
  A: H335 is documented as “Inspection- Service and Trade Equipment” and explicitly “Includes: Commercial Testing and Laboratory Services” while excluding medical and dental laboratory services. ¹

• Q: Is maintenance or repair covered by H335?
  A: No. Maintenance, repair, and rebuilding of service and trade equipment are reported under separate PSCs such as J035; H335 is the inspection/testing classification. ¹

• Q: Which NAICS codes map to H335?
  A: Not specified by official sources. The PSC Manual does not publish a formal, one-to-one PSC-to-NAICS crosswalk within the service-code entries; mapping varies by contract and agency reporting. ¹

• Q: How should the correct PSC be selected for a mixed-scope contract?
  A: Select the PSC that reflects the predominant product or service (the largest portion of the procurement). The PSC Manual instructs agencies to choose the code that best represents what was predominantly purchased. ¹

Useful resources

• PSC H335 on G2X
• Product and Service Codes (PSC) Manual — Fiscal Year 2025 Edition (Acquisition.gov): https://www.acquisition.gov/sites/default/files/manual/PSC%20Manual%20April%202025.pdf

References

1. Product and Service Codes (PSC) Manual, Fiscal Year 2025 Edition (Acquisition.gov): https://www.acquisition.gov/sites/default/files/manual/PSC%20Manual%20April%202025.pdf