PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

12771Spacer,ring

Aerosonic Llc · NSN 5365-00-111-4521 · FSC 5365 · No Item Name Available
Verified by PartsTable
NSN 5365-00-111-4521 — this item is cataloged by the U.S. Government under National Stock Number 5365-00-111-4521. Primary manufacturer part number: 12771.
Features
  • Spacer,ring — FSC 5365
  • Material Document and Classification: QQ-200,T6 FED SPEC SINGLE MATERIAL RESPONSE
  • Inside Diameter: 1.870 INCHES NOMINAL IN
  • Material: ALUMINUM
  • FSC Application Data: INDICATOR,AIRSPEED
  • Overall Thickness: 0.125 INCHES NOMINAL IN
  • Outside Diameter: 2.040 INCHES NOMINAL IN
  • 1 verified cross-reference
Applications
  • Applications requiring Aluminum construction
General Description

The Spacer,ring, cataloged under National Stock Number 5365-00-111-4521, is classified within Federal Supply Class 5365 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Aerosonic Llc. Government technical data includes 6 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 10 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5365-00-111-4521
Primary Part Number12771
Item NameSpacer,ring
FSC / FSG5365 / 53 — No Item Name Available
ManufacturerAerosonic Llc
StatusACTIVE
Material Document and ClassificationQQ-200,T6 FED SPEC SINGLE MATERIAL RESPONSE
Inside Diameter1.870 INCHES NOMINAL IN
MaterialALUMINUM
FSC Application DataINDICATOR,AIRSPEED
Overall Thickness0.125 INCHES NOMINAL IN
Outside Diameter2.040 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 10
1730-00-185-291012771 INTERCHANGEABLE
End Cap Pin,knuckle Assembly
Time Manufacturing Company Dba Time Manufacturing Company
1650-00-674-446412771 INTERCHANGEABLE
Restrictor Assy
Saf Industries Llc Dba Saf Industries Llc Div Garkenyon
4820-00-723-877312771 INTERCHANGEABLE
Disk,valve
Eaton Aerospace Llc Dba Eaton Aerospace Jackson
4610-01-060-3679VP-17-4200 INTERCHANGEABLE
Cartridge,de-Ionizer
Resintech Inc Dba Aries Filterworks Llc
5995-01-185-758312771 INTERCHANGEABLE
Cable Assembly,special Purpose,e
The First Electronics Corporation
5950-01-233-070370-77A INTERCHANGEABLE
Transformer,power
Valad Electric Heating Corp.
5950-01-269-0707 INTERCHANGEABLE
Transformer,power
6145-01-384-089312771 INTERCHANGEABLE
Cable,special Purpose,electrical
Nexans Aerospace Usa Llc
5930-01-519-844012771 INTERCHANGEABLE
Switch,push
Itw Food Equipment Group Llc Dba Gaylord Industries
6130-01-596-312312771 INTERCHANGEABLE
Discharger,battery
Teledyne Flir Unmanned Ground Systems, Inc
Cross-Reference Index
Part NumberManufacturer
12771 PRIMARY Aerosonic Llc (USA)
Related Parts
1730-00-185-2910INTERCHANGEABLE
END CAP PIN,KNUCKLE ASSEMBLY
12771
1650-00-674-4464INTERCHANGEABLE
RESTRICTOR ASSY
12771
4820-00-723-8773INTERCHANGEABLE
DISK,VALVE
12771
4610-01-060-3679INTERCHANGEABLE
CARTRIDGE,DE-IONIZER
VP-17-4200
5995-01-185-7583INTERCHANGEABLE
CABLE ASSEMBLY,SPECIAL PURPOSE,E
12771
5950-01-233-0703INTERCHANGEABLE
TRANSFORMER,POWER
70-77A
5950-01-269-0707INTERCHANGEABLE
TRANSFORMER,POWER
6145-01-384-0893INTERCHANGEABLE
CABLE,SPECIAL PURPOSE,ELECTRICAL
12771
5930-01-519-8440INTERCHANGEABLE
SWITCH,PUSH
12771
6130-01-596-3123INTERCHANGEABLE
DISCHARGER,BATTERY
12771

Frequently Asked Questions

What is NSN 5365-00-111-4521?

NSN 5365-00-111-4521 is a Spacer,ring, manufactured by Aerosonic Llc, classified under FSC 5365 (No Item Name Available). Status: active.

What are the part numbers for NSN 5365-00-111-4521?

NSN 5365-00-111-4521 has 1 cross-referenced part number: 12771 (Aerosonic Llc).

What NSN replaces 5365-00-111-4521?

There are 10 known substitutes for 5365-00-111-4521: 1730-00-185-2910, 1650-00-674-4464, 4820-00-723-8773 and 7 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 12771?

Key specifications for 12771: Material Document and Classification: QQ-200,T6 FED SPEC SINGLE MATERIAL RESPONSE; Inside Diameter: 1.870 INCHES NOMINAL IN; Material: ALUMINUM; FSC Application Data: INDICATOR,AIRSPEED. 6 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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