PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

68661Circuit Card Assembly

Espey Mfg. & Electronics Corp. · NSN 5998-01-504-6664 · FSC 5998 · Circuit Card Assembly
Verified by PartsTable
NSN 5998-01-504-6664 — this item is cataloged by the U.S. Government under National Stock Number 5998-01-504-6664. Primary manufacturer part number: 68661.
Features
  • Circuit Card Assembly — FSC 5998
  • 3 verified cross-references
  • Primary manufacturer: Espey Mfg. & Electronics Corp.
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Circuit Card Assembly, cataloged under National Stock Number 5998-01-504-6664, is classified within Federal Supply Class 5998 (Circuit Card Assembly) of the Electrical and Electronic Equipment Components group. The primary manufacturer of record is Espey Mfg. & Electronics Corp.. This item has 3 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 4 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5998-01-504-6664
Primary Part Number68661
Item NameCircuit Card Assembly
FSC / FSG5998 / 59 — Circuit Card Assembly
ManufacturerEspey Mfg. & Electronics Corp.
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 4
5961-00-469-9901352-0704-021 INTERCHANGEABLE
Transistor
Rockwell Collins, Inc. Dba Collins Aerospace Government Systems Div Collins Aerospace - Government Systems
2910-01-065-9503020416300S INTERCHANGEABLE
Body Fuel Filter
Cummins Filtration Inc Dba Fleetguard Div Cummins Inc
5340-01-109-340768661 INTERCHANGEABLE
Caster
Mcneil Ohio Corp
6240-01-433-04586866-1 INTERCHANGEABLE
Lamp Assembly
Phaostron Instrument and Electronic Company
Cross-Reference Index
Part NumberManufacturer
68661 Espey Mfg. & Electronics Corp. (USA)
1P68661 Lockheed Martin Corporation Div Rms (USA)
68661 Espey Mfg and Electronics Corp (USA)
Related Parts
5961-00-469-9901INTERCHANGEABLE
TRANSISTOR
352-0704-021
2910-01-065-9503INTERCHANGEABLE
BODY FUEL FILTER
020416300S
5340-01-109-3407INTERCHANGEABLE
CASTER
68661
6240-01-433-0458INTERCHANGEABLE
LAMP ASSEMBLY
6866-1

Frequently Asked Questions

What is NSN 5998-01-504-6664?

NSN 5998-01-504-6664 is a Circuit Card Assembly, manufactured by Espey Mfg. & Electronics Corp., classified under FSC 5998 (Circuit Card Assembly). Status: active.

What are the part numbers for NSN 5998-01-504-6664?

NSN 5998-01-504-6664 has 3 cross-referenced part numbers: 68661 (Espey Mfg. & Electronics Corp.), 1P68661 (Lockheed Martin Corporation Div Rms), 68661 (Espey Mfg and Electronics Corp).

What NSN replaces 5998-01-504-6664?

There are 4 known substitutes for 5998-01-504-6664: 5961-00-469-9901, 2910-01-065-9503, 5340-01-109-3407 and 1 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 68661?

Key specifications for 68661: End Item Identification: RAT-31SL;1215435; End Item Identification: RAT-31SL;1215435. 2 total characteristics are documented in the Federal Logistics Information System.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com