PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

A3877Fitting,constant S

Eaton Aerospace Llc Div Fluid and Electrical Distribution Division · NSN 1650-00-421-8264 · FSC 1650 · No Item Name Available
Verified by PartsTable
NSN 1650-00-421-8264 — this item is cataloged by the U.S. Government under National Stock Number 1650-00-421-8264. Primary manufacturer part number: A3877.
Features
  • Fitting,constant S — FSC 1650
  • 1 verified cross-reference
  • Primary manufacturer: Eaton Aerospace Llc Div Fluid and Electrical Distribution Division
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Fitting,constant S, cataloged under National Stock Number 1650-00-421-8264, is classified within Federal Supply Class 1650 (No Item Name Available) of the Aircraft Components and Accessories group. The primary manufacturer of record is Eaton Aerospace Llc Div Fluid and Electrical Distribution Division. This item has 1 commercial cross-reference 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.

Catalog Facts
Item NameFitting,constant S
FSC / FSG1650 — No Item Name Available (FSG 16)
ManufacturersEaton Aerospace Llc Div Fluid and Electrical Distribution Division (CAGE 97484)
Technical Specifications
ParameterValue
NSN1650-00-421-8264
Primary Part NumberA3877
Item NameFitting,constant S
FSC / FSG1650 / 16 — No Item Name Available
ManufacturerEaton Aerospace Llc Div Fluid and Electrical Distribution Division
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 5
3110-00-142-438609195 INTERCHANGEABLE
Cup,tapered Roller Bearing
The Timken Corporation
4720-00-356-2048 INTERCHANGEABLE
Hose Assembly,nonmetallic
5950-00-645-0786 INTERCHANGEABLE
Transformer,audio Frequency
5995-00-727-5009A3877 INTERCHANGEABLE
Lead,electrical
Grimes Aerospace Company
4710-00-785-94753877 INTERCHANGEABLE
Tube Assembly,metal
Renk America Llc Div Renk America
Cross-Reference Index
Part NumberManufacturer
A3877 PRIMARY Eaton Aerospace Llc Div Fluid and Electrical Distribution Division (USA)
Related Parts
3110-00-142-4386INTERCHANGEABLE
CUP,TAPERED ROLLER BEARING
09195
4720-00-356-2048INTERCHANGEABLE
HOSE ASSEMBLY,NONMETALLIC
5950-00-645-0786INTERCHANGEABLE
TRANSFORMER,AUDIO FREQUENCY
5995-00-727-5009INTERCHANGEABLE
LEAD,ELECTRICAL
A3877
4710-00-785-9475INTERCHANGEABLE
TUBE ASSEMBLY,METAL
3877

Frequently Asked Questions

What is NSN 1650-00-421-8264?

NSN 1650-00-421-8264 is a Fitting,constant S, manufactured by Eaton Aerospace Llc Div Fluid and Electrical Distribution Division, classified under FSC 1650 (No Item Name Available). Status: active.

What are the part numbers for NSN 1650-00-421-8264?

NSN 1650-00-421-8264 has 1 cross-referenced part number: A3877 (Eaton Aerospace Llc Div Fluid and Electrical Distribution Division).

What NSN replaces 1650-00-421-8264?

There are 5 known substitutes for 1650-00-421-8264: 3110-00-142-4386, 4720-00-356-2048, 5950-00-645-0786 and 2 more. Verify interchangeability with system specifications before substitution.

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