PSC Z1JB

Overview

The Product Service Code (PSC) system is a four-character federal classification used to describe products and services acquired by U.S. government agencies for reporting and analysis in systems such as FPDS and SAM. The PSC Manual (maintained by GSA) is the authoritative reference for code structure, activation/end dates, and management procedures. PSC Z1JB — Maintenance of Testing and Measurement Buildings — is the label recorded when the predominant procurement is maintenance of testing and measurement buildings; the manual provides the code title and placement within the maintenance (Z1) family but does not supply an expanded scope statement beyond the title.¹

What this PSC covers

• Testing and measurement buildings maintenance — Not specified by official sources.¹
• Facility systems upkeep (electrical, HVAC, plumbing) — Not specified by official sources.¹
• Routine structural maintenance of lab and test spaces — Not specified by official sources.¹
• Preventive maintenance and inspections for test facilities — Not specified by official sources.¹
• Minor repairs to instrumentation rooms and controlled environments — Not specified by official sources.¹
• Grounds and exterior maintenance specific to testing facilities — Not specified by official sources.¹

Related NAICS and PSC codes

No official NAICS-to-PSC crosswalk entries specific to PSC Z1JB are provided in the PSC Manual; the manual does, however, list closely related PSCs in the maintenance and repair families.¹

Source: PSC Manual.¹

FPDS reporting and contract-line practice

When reporting contract data in FPDS, the Product or Service Code (PSC) field must reflect the predominant product or service procured for the contract line or award. Agencies commonly select the single PSC that best represents the primary purpose of the award (maintenance labor and facility work are typically reported under maintenance‑family PSCs). See FPDS/contract-line guidance in the PGI for line-item reporting.²

Frequently asked questions

• What exactly does PSC Z1JB denote on an FPDS record?

PSC Z1JB is the label used to record that the predominant subject of the contract action is maintenance of testing and measurement buildings. The PSC Manual lists the code and title but does not provide an expanded scope or subcategories for this specific code.¹

• When should Z1JB be used instead of Z2JB?

Use PSC Z1JB where the predominant work is maintenance and routine upkeep of testing and measurement buildings. Use PSC Z2JB where the work is repair or alteration; the PSC Manual groups these as separate families with distinct titles.¹

• Are NAICS mappings published for Z1JB?

The PSC Manual does not publish a definitive NAICS crosswalk tied specifically to PSC Z1JB in the manual text. NAICS selection is typically determined by the nature of the contractor’s work and the acquisition, and may be recorded separately in FPDS.¹

Useful resources

• G2X — PSC Z1JB overview.
• PSC Manual (Product and Service Code Manual, April 2025 edition).¹
• PGI 204.7103 (Uniform contract line item/FPDS reporting guidance).²
• FPDS help and ezSearch (FPDS contract-data search help).³

References

1. PSC Manual April 2025 (Product and Service Code Manual), General Services Administration, acquisition.gov: https://www.acquisition.gov/sites/default/files/manual/PSC%20Manual%20April%202025.pdf.
2. PGI 204.7103 - Uniform Contract Line Item Numbering System, acquisition.gov: https://www.acquisition.gov/node/55710.
3. FPDS help: ezSearch and FPDS help pages, FPDS: https://www.fpds.gov/help/index.jsp.