PSC 6330

Overview

The federal Product and Service Code (PSC) system standardizes how purchases are categorized across procurement systems, enabling consistent classification of what agencies buy and supporting tracking, analysis, and reporting. PSCs are entered on contract actions in FPDS and are maintained by GSA through the PSC Manual, which governs definitions, inclusions, and exclusions. ¹
6330 — Railroad Signal and Warning Devices — is a product PSC in Group 63 (Alarm, Signal and Security Detection Systems). Official scope notes specify that it includes railroad gates, flasher lights, and block signals, and it expressly excludes semaphore flag signals. Agencies select this PSC when those railroad-specific signaling and warning end items are the predominant products acquired. ¹

See also on G2X:

• Related: 6310 — Traffic and Transit Signal Systems
• Related: 6350 — Miscellaneous Alarm, Signal, and Security Detection Systems

What this PSC covers

• Railroad-grade crossing gates used for train-vehicle separation. ¹
• Flasher light signal units for railroad warning applications. ¹
• Block signal equipment for railroad traffic control. ¹
• Complete railroad signal and warning device assemblies classified under this code. Not specified by official sources ²
• Other railroad signal and warning devices within Group 63 that fit this class. Not specified by official sources ²

Related NAICS and PSC codes

Type	Code	Descriptor
PSC	6310	Traffic and Transit Signal Systems (excludes railroad signals). 1
PSC	6320	Shipboard Alarm and Signal Systems. 1
PSC	6340	Aircraft Alarm and Signal Systems. 1
PSC	6350	Miscellaneous Alarm, Signal, and Security Detection Systems. 1

Scope notes and exclusions

• Inclusions for 6330: railroad gates, flasher lights, and block signals. ¹
• Exclusion for 6330: semaphore flag signals (not reported under this PSC). ¹

Reporting notes for growth professionals

• In FPDS, the PSC is recorded to indicate “what was bought”; when multiple items are involved, select the PSC for the predominant product. ¹
• SAM.gov Contract Data search supports filtering by PSC under “Product or Service Information,” allowing research on awards and notices that used 6330. ³

Frequently asked questions

• What does PSC 6330 include?
  The PSC Manual lists railroad gates, flasher lights, and block signals as included items within this class. It is part of Group 63 for alarm, signal, and security detection systems. ¹

• What is excluded from PSC 6330?
  Semaphore flag signals are explicitly excluded and should not be reported under 6330. Use a different PSC if only semaphore flag signals are being acquired. ¹

• How does PSC 6330 differ from PSC 6310?
  PSC 6310 covers traffic and transit signal systems and specifically excludes railroad signals, while PSC 6330 covers railroad signal and warning devices. Selection hinges on whether the equipment is railroad-specific. ¹

• How is PSC 6330 used in federal reporting?
  Agencies enter the PSC in FPDS to classify the predominant product purchased on each contract action; 6330 is used when railroad signal and warning devices are the primary end items. ¹

• Can PSC 6330 be used to search SAM.gov data?
  Yes. SAM.gov’s Contract Data search provides “Product or Service Information” filters that include PSC selections, enabling targeted research on records coded with 6330. ³

Useful resources

• G2X — PSC 6330 overview
• PSC Manual (April 2025 edition) — official definitions, inclusions, and exclusions. ¹
• PSC Manual landing/index page — governance and updates. ²
• SAM.gov Contract Data — filters include PSC selections for award data research. ³

References

1. Acquisition.gov — PSC Manual, April 2025 (current edition). https://www.acquisition.gov/content/psc-manual-april-2025.pdf
2. Acquisition.gov — Product and Service Code Manual (index/landing page). https://www.acquisition.gov/psc-manual
3. SAM.gov — Contract Data (PSC and NAICS filter availability). https://sam.gov/content/contract-data