PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

300803Slip Ring Sub-Assy

Moog Inc. · NSN 5977-01-449-9143 · FSC 5977 · No Item Name Available
Verified by PartsTable
NSN 5977-01-449-9143 — this item is cataloged by the U.S. Government under National Stock Number 5977-01-449-9143. Primary manufacturer part number: 300803.
Features
  • Slip Ring Sub-Assy — FSC 5977
  • 2 verified cross-references
  • Primary manufacturer: Moog Inc.
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Slip Ring Sub-Assy, cataloged under National Stock Number 5977-01-449-9143, is classified within Federal Supply Class 5977 (No Item Name Available) of the Electrical and Electronic Equipment Components group. The primary manufacturer of record is Moog Inc.. This item has 2 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 8 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Catalog Facts
Item NameSlip Ring Sub-Assy
FSC / FSG5977 — No Item Name Available (FSG 59)
ManufacturersRaytheon Company Div Rmd Strategic (CAGE 05869); Moog Inc. (CAGE 99932)
Technical Specifications
ParameterValue
NSN5977-01-449-9143
Primary Part Number300803
Item NameSlip Ring Sub-Assy
FSC / FSG5977 / 59 — No Item Name Available
ManufacturerMoog Inc.
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 8
5310-00-121-8324300803 INTERCHANGEABLE
Washer,flat
Brp Us Inc
5310-00-264-1950 INTERCHANGEABLE
Washer,flat
5307-00-411-4902 INTERCHANGEABLE
Stud,short,turnaround
4730-01-136-77023008-03 INTERCHANGEABLE
Restrictor,fluid Flow
Pentair Filtration Solutions, Llc
3120-01-228-0654300803 INTERCHANGEABLE
Bearing,sleeve
Hyster-Yale Group, Inc. Div Hyster-Yale Materials Handling
5985-01-269-5346300803 INTERCHANGEABLE
Switch,radio Frequency Transmiss
Caes Systems Llc
5985-01-271-123750211-3 INTERCHANGEABLE
Antenna Subassembly
Fisica Applied Technologies, Inc. Div Randtron Antenna Systems
7025-01-545-6545300803 INTERCHANGEABLE
Disk Drive Unit
Lacie Ltd
Cross-Reference Index
Part NumberManufacturer
5021-11 Raytheon Company Div Rmd Strategic (USA)
300803 PRIMARY Moog Inc. (USA)
Related Parts
5310-00-121-8324INTERCHANGEABLE
WASHER,FLAT
300803
5310-00-264-1950INTERCHANGEABLE
WASHER,FLAT
5307-00-411-4902INTERCHANGEABLE
STUD,SHORT,TURNAROUND
4730-01-136-7702INTERCHANGEABLE
RESTRICTOR,FLUID FLOW
3008-03
3120-01-228-0654INTERCHANGEABLE
BEARING,SLEEVE
300803
5985-01-269-5346INTERCHANGEABLE
SWITCH,RADIO FREQUENCY TRANSMISS
300803
5985-01-271-1237INTERCHANGEABLE
ANTENNA SUBASSEMBLY
50211-3
7025-01-545-6545INTERCHANGEABLE
DISK DRIVE UNIT
300803

Frequently Asked Questions

What is NSN 5977-01-449-9143?

NSN 5977-01-449-9143 is a Slip Ring Sub-Assy, manufactured by Moog Inc., classified under FSC 5977 (No Item Name Available). Status: active.

What are the part numbers for NSN 5977-01-449-9143?

NSN 5977-01-449-9143 has 2 cross-referenced part numbers: 5021-11 (Raytheon Company Div Rmd Strategic), 300803 (Moog Inc.).

What NSN replaces 5977-01-449-9143?

There are 8 known substitutes for 5977-01-449-9143: 5310-00-121-8324, 5310-00-264-1950, 5307-00-411-4902 and 5 more. Verify interchangeability with system specifications before substitution.

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