PSC H326

PSC H326 — Inspection Services: Tires and Tubes

Overview
The Product Service Code (PSC) system classifies products and services in federal procurement records and is maintained in the PSC Manual on Acquisition.gov. PSCs are recorded in FPDS/SAM to identify the predominant product or service on a contract or order; contracting officers and data-entry personnel use PSC guidance when assigning these codes. ¹

PSC H326 is the PSC Manual entry used to identify inspection, commercial testing, and laboratory services specifically associated with tires and tubes. The Manual places H326 in the inspection-related group, lists included services such as commercial testing and laboratory analyses for tire/tube performance and defect assessment, and explicitly excludes medical and dental laboratory services for clinical testing contexts. ¹

What this PSC covers

• Commercial testing and laboratory services for tires and inner tubes, including performance and durability testing. ¹
• Inspection and quality-control services for vehicular tires and inner tubes (visual, dimensional, pressure/seal testing). ¹
• Ancillary non-medical laboratory analyses associated with tire/tube material or failure investigation. ¹
• Exclusion of medical and dental laboratory services; clinical laboratory testing belongs under medical PSCs. ¹

Related NAICS and PSC codes

Type	Code	Descriptor
PSC	H323	Inspection — Ground Effect Vehicles, Motor Vehicles, Trailers, and Cycles.
PSC	H325	Inspection — Vehicular Equipment Components.
PSC	H328	Inspection — Engines, Turbines, and Components.

(All related PSC groupings and descriptors are defined in the PSC Manual.) ¹

Contract-coding and FPDS notes

• Enter the PSC in FPDS element 8A; select PSC H326 when inspection, testing, or laboratory services for tires and tubes are the contract’s predominant deliverable. ²
• When multiple major deliverables exist, determine the PSC by greatest share of contract value in accordance with FPDS coding rules and the FPDS glossary guidance. ²

Frequently asked questions

• What activities should be coded to PSC H326?
  Activities that are primarily commercial testing, laboratory analysis, or inspection services focused on tires and inner tubes — such as performance testing, failure analysis, and non-clinical materials testing — should use PSC H326. ¹

• Does H326 apply to clinical (medical or dental) laboratory testing of rubber or related materials?
  No. PSC H326 explicitly excludes medical and dental laboratory services; any clinical testing should be coded to the appropriate medical/dental PSC per the PSC Manual. ¹

• How do I record PSC H326 in FPDS alongside NAICS?
  Record PSC H326 in FPDS element 8A. NAICS is recorded separately (element 7) and should reflect the industry performing the work; choose NAICS that best represents the contractor’s primary industry for the procurement. ²

• If a procurement combines tire inspection and equipment repair, which PSC applies?
  Use the PSC that represents the predominant contractual deliverable by value. If inspection/testing of tires/tubes comprises the largest share, select PSC H326; if repair or a different service is predominant, select the corresponding PSC. ²

Useful resources

• PSC H326 — G2X PSC overview (internal link).
• PSC H325, PSC H323, PSC H328 — related G2X pages.
• PSC Manual (Acquisition.gov) — official PSC definitions and grouping, including H326. ¹
• FPDS glossary and coding guidance (FPDS.gov) — instructions for FPDS element mapping and predominant-product/service rules. ²

References

1. PSC Manual (Product and Service Codes Manual), Acquisition.gov. https://www.acquisition.gov/content/psc-manual-april-2025.pdf
2. FPDS Glossary — Product or Service Code and FPDS coding guidance, FPDS.gov. https://www.fpds.gov/help_V1_1/Glossary.htm

Overview

PSC H326 designates inspection, commercial testing, and non-clinical laboratory services that are specifically focused on tires and inner tubes. Use this code when a contract’s predominant deliverable is inspection or testing work such as performance and durability testing, visual and dimensional inspections, pressure/seal tests, material analyses for wear or failure investigations, and other quality-control laboratory services tied to tires/tubes. The PSC Manual places H326 in the inspection-related group and explicitly excludes medical or dental clinical laboratory testing, which must be coded under the applicable medical PSCs. Assign H326 in FPDS when tire/tube inspection/testing represents the greatest share of contract value and when the services are non-clinical in nature. ^[1]