PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

28801Field Loss Maintenance Module

Research Incorporated Dba Control Systems Div Div Thermal Solutions Div · NSN 4920-00-831-3857 · FSC 4920 · No Item Name Available
Verified by PartsTable
NSN 4920-00-831-3857 — this item is cataloged by the U.S. Government under National Stock Number 4920-00-831-3857. Primary manufacturer part number: 28801.
Features
  • Field Loss Maintenance Module — FSC 4920
  • 2 verified cross-references
  • Primary manufacturer: Research Incorporated Dba Control Systems Div Div Thermal Solutions Div
Applications
  • Maintenance depot operations
  • Field repair and servicing
  • Vehicle maintenance facilities
General Description

The Field Loss Maintenance Module, cataloged under National Stock Number 4920-00-831-3857, is classified within Federal Supply Class 4920 (No Item Name Available) of the Maintenance and Repair Shop Equipment group. The primary manufacturer of record is Research Incorporated Dba Control Systems Div Div Thermal Solutions Div. This item has 2 commercial cross-references from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 5 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4920-00-831-3857
Primary Part Number28801
Item NameField Loss Maintenance Module
FSC / FSG4920 / 49 — No Item Name Available
ManufacturerResearch Incorporated Dba Control Systems Div Div Thermal Solutions Div
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 5
5325-00-920-025028801 INTERCHANGEABLE
Ring,retaining
Hydro-Aire Aerospace Corp
5935-00-945-72702880-1 INTERCHANGEABLE
Connector Assembly,electrical
Microwave Devices Inc
7520-01-349-630360025 INTERCHANGEABLE
Pen,ball-Point
Sanford Corp
5330-01-468-7480 INTERCHANGEABLE
Packing,preformed
5340-01-481-3217863-000299 INTERCHANGEABLE
Bracket,mounting
Guild Associates Inc
Cross-Reference Index
Part NumberManufacturer
28801 Research Incorporated Dba Control Systems Div Div Thermal Solutions Div (USA)
B28801 Research Incorporated Dba Control Systems Div Div Thermal Solutions Div (USA)
Related Parts
5325-00-920-0250INTERCHANGEABLE
RING,RETAINING
28801
5935-00-945-7270INTERCHANGEABLE
CONNECTOR ASSEMBLY,ELECTRICAL
2880-1
7520-01-349-6303INTERCHANGEABLE
PEN,BALL-POINT
60025
5330-01-468-7480INTERCHANGEABLE
PACKING,PREFORMED
5340-01-481-3217INTERCHANGEABLE
BRACKET,MOUNTING
863-000299

Frequently Asked Questions

What is NSN 4920-00-831-3857?

NSN 4920-00-831-3857 is a Field Loss Maintenance Module, manufactured by Research Incorporated Dba Control Systems Div Div Thermal Solutions Div, classified under FSC 4920 (No Item Name Available). Status: active.

What are the part numbers for NSN 4920-00-831-3857?

NSN 4920-00-831-3857 has 2 cross-referenced part numbers: 28801 (Research Incorporated Dba Control Systems Div Div Thermal Solutions Div), B28801 (Research Incorporated Dba Control Systems Div Div Thermal Solutions Div).

What NSN replaces 4920-00-831-3857?

There are 5 known substitutes for 4920-00-831-3857: 5325-00-920-0250, 5935-00-945-7270, 7520-01-349-6303 and 2 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 28801?

Key specifications for 28801: End Item Identification: EA6B ACFT. 1 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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