PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

35-591Circuit Card Assembly

Concurrent Computer Corporation · NSN 5998-01-109-6688 · FSC 5998 · Circuit Card Assembly
Verified by PartsTable
NSN 5998-01-109-6688 — this item is cataloged by the U.S. Government under National Stock Number 5998-01-109-6688. Primary manufacturer part number: 35-591.
Features
  • Circuit Card Assembly — FSC 5998
  • 1 verified cross-reference
  • Primary manufacturer: Concurrent Computer Corporation
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Circuit Card Assembly, cataloged under National Stock Number 5998-01-109-6688, is classified within Federal Supply Class 5998 (Circuit Card Assembly) of the Electrical and Electronic Equipment Components group. The primary manufacturer of record is Concurrent Computer Corporation. This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 4 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Catalog Facts
Item NameCircuit Card Assembly
FSC / FSG5998 — Circuit Card Assembly (FSG 59)
ManufacturersConcurrent Computer Corporation (CAGE 30331)
Technical Specifications
ParameterValue
NSN5998-01-109-6688
Primary Part Number35-591
Item NameCircuit Card Assembly
FSC / FSG5998 / 59 — Circuit Card Assembly
ManufacturerConcurrent Computer Corporation
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 4
4810-00-871-127635-591 INTERCHANGEABLE
Valve,gate
Hydro-Aire Aerospace Corp
5940-01-200-976935591 INTERCHANGEABLE
Terminal,lug
Hamilton Sundstrand Corporation Dba Collins Aerospace
4820-01-210-6983355-91 INTERCHANGEABLE
Retainer,disk,valve
Magnatrol Valve Corp Div Clark-Cooper
4320-01-408-2428 INTERCHANGEABLE
Pump,axial Pistons
Cross-Reference Index
Part NumberManufacturer
35-591 Concurrent Computer Corporation (USA)
Related Parts
4810-00-871-1276INTERCHANGEABLE
VALVE,GATE
35-591
5940-01-200-9769INTERCHANGEABLE
TERMINAL,LUG
35591
4820-01-210-6983INTERCHANGEABLE
RETAINER,DISK,VALVE
355-91
4320-01-408-2428INTERCHANGEABLE
PUMP,AXIAL PISTONS

Frequently Asked Questions

What is NSN 5998-01-109-6688?

NSN 5998-01-109-6688 is a Circuit Card Assembly, manufactured by Concurrent Computer Corporation, classified under FSC 5998 (Circuit Card Assembly). Status: active.

What are the part numbers for NSN 5998-01-109-6688?

NSN 5998-01-109-6688 has 1 cross-referenced part number: 35-591 (Concurrent Computer Corporation).

What NSN replaces 5998-01-109-6688?

There are 4 known substitutes for 5998-01-109-6688: 4810-00-871-1276, 5940-01-200-9769, 4820-01-210-6983 and 1 more. Verify interchangeability with system specifications before substitution.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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