PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

40891Circuit Card Assembly

Undersea Sensor Systems Inc Div Ultra Sonobuoy Systems · NSN 5998-00-739-8357 · FSC 5998 · Circuit Card Assembly
Verified by PartsTable
NSN 5998-00-739-8357 — this item is cataloged by the U.S. Government under National Stock Number 5998-00-739-8357. Primary manufacturer part number: 40891.
Features
  • Circuit Card Assembly — FSC 5998
  • 1 verified cross-reference
  • Primary manufacturer: Undersea Sensor Systems Inc Div Ultra Sonobuoy Systems
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Circuit Card Assembly, cataloged under National Stock Number 5998-00-739-8357, is classified within Federal Supply Class 5998 (Circuit Card Assembly) of the Electrical and Electronic Equipment Components group. The primary manufacturer of record is Undersea Sensor Systems Inc Div Ultra Sonobuoy Systems. This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 6 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active. Unit of issue: EA.

Technical Specifications
ParameterValue
NSN5998-00-739-8357
Primary Part Number40891
Item NameCircuit Card Assembly
FSC / FSG5998 / 59 — Circuit Card Assembly
ManufacturerUndersea Sensor Systems Inc Div Ultra Sonobuoy Systems
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Shelf Life Code0
Criticality CodeN
Unit of IssueEA
SMR CodeJN
Verified Substitutes 6
6645-00-225-26904089-1 INTERCHANGEABLE
Holder,stem Seal
Wakmann Watch Company Inc
3020-00-450-163540891 INTERCHANGEABLE
Gear,spur
Liquid Controls, L.l.c. Div Idex Corporation
5930-00-581-783540891 INTERCHANGEABLE
Switch Subassembly
Setra Systems, Inc. Dba Gems Sensors
5999-00-967-3766G140-063 INTERCHANGEABLE
Mounting Pad,electrical-Electron
Kearfott Corporation Div Guidance and Navigation Division
5961-01-072-2300 INTERCHANGEABLE
Semiconductor Device,diode
5340-01-260-6258A4727-4TG INTERCHANGEABLE
Caster,rigid
Albion Industries, Inc.
Cross-Reference Index
Part NumberManufacturer
40891 PRIMARY Undersea Sensor Systems Inc Div Ultra Sonobuoy Systems (USA)
Related Parts
6645-00-225-2690INTERCHANGEABLE
HOLDER,STEM SEAL
4089-1
3020-00-450-1635INTERCHANGEABLE
GEAR,SPUR
40891
5930-00-581-7835INTERCHANGEABLE
SWITCH SUBASSEMBLY
40891
5999-00-967-3766INTERCHANGEABLE
MOUNTING PAD,ELECTRICAL-ELECTRON
G140-063
5961-01-072-2300INTERCHANGEABLE
SEMICONDUCTOR DEVICE,DIODE
5340-01-260-6258INTERCHANGEABLE
CASTER,RIGID
A4727-4TG

Frequently Asked Questions

What is NSN 5998-00-739-8357?

NSN 5998-00-739-8357 is a Circuit Card Assembly, manufactured by Undersea Sensor Systems Inc Div Ultra Sonobuoy Systems, classified under FSC 5998 (Circuit Card Assembly). Status: active.

What are the part numbers for NSN 5998-00-739-8357?

NSN 5998-00-739-8357 has 1 cross-referenced part number: 40891 (Undersea Sensor Systems Inc Div Ultra Sonobuoy Systems).

What NSN replaces 5998-00-739-8357?

There are 6 known substitutes for 5998-00-739-8357: 6645-00-225-2690, 3020-00-450-1635, 5930-00-581-7835 and 3 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 40891?

Key specifications for 40891: End Item Identification: MISC ACFT INSTRUMENT AND ELECT; End Item Identification: MISC ACFT INSTRUMENT AND ELECT. 2 total characteristics are documented in the Federal Logistics Information System.

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