PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

28903-12Ring,lock,keyed

Triumph Engine Control Systems Llc · NSN 5365-00-726-4010 · FSC 5365 · No Item Name Available
Verified by PartsTable
NSN 5365-00-726-4010 — this item is cataloged by the U.S. Government under National Stock Number 5365-00-726-4010. Primary manufacturer part number: 28903-12.
Features
  • Ring,lock,keyed — FSC 5365
  • Overall Outside Diameter: 0.495 INCHES MINIMUM AND 0.500 INCHES MAXIMUM IN
  • Material: STEEL CORROSION RESISTING
  • Key Width: 0.086 INCHES MINIMUM AND 0.091 INCHES MAXIMUM IN
  • Key Length: 0.177 INCHES MINIMUM AND 0.187 INCHES MAXIMUM IN
  • Inside Diameter: 0.404 INCHES MINIMUM AND 0.406 INCHES MAXIMUM IN
  • 6 verified cross-references
  • Primary manufacturer: Triumph Engine Control Systems Llc
Applications
  • Applications requiring Steel Corrosion Resisting construction
General Description

The Ring,lock,keyed, cataloged under National Stock Number 5365-00-726-4010, is classified within Federal Supply Class 5365 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Triumph Engine Control Systems Llc. Government technical data includes 5 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 6 commercial cross-references from 4 manufacturers, enabling identification through both NSN and commercial part number lookups. 4 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5365-00-726-4010
Primary Part Number28903-12
Item NameRing,lock,keyed
FSC / FSG5365 / 53 — No Item Name Available
ManufacturerTriumph Engine Control Systems Llc
StatusCANCELLED
Overall Outside Diameter0.495 INCHES MINIMUM AND 0.500 INCHES MAXIMUM IN
MaterialSTEEL CORROSION RESISTING
Key Width0.086 INCHES MINIMUM AND 0.091 INCHES MAXIMUM IN
Key Length0.177 INCHES MINIMUM AND 0.187 INCHES MAXIMUM IN
Inside Diameter0.404 INCHES MINIMUM AND 0.406 INCHES MAXIMUM IN
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 4
5365-00-031-0387 INTERCHANGEABLE
Ring,lock,keyed
5815-00-126-818274208 INTERCHANGEABLE
Bar
Telemechanics Inc
1650-00-907-0376698249 INTERCHANGEABLE
Liner Assembly,bearing
Hamilton Sundstrand Corporation
5365-01-134-990074208 INTERCHANGEABLE
Bushing,valve
Eaton Aerospace Llc Dba Sterer Engineering Div Valve & Actuator
Cross-Reference Index
Part NumberManufacturer
5365PL2015828 Jednolity Indeks Materialowy - Uniform Material Index (POL)
7420-8 Stanley Engineered Fastening Llc (USA)
69824-9 Hamilton Sundstrand Corporation Dba Collins Aerospace (USA)
28903-12 PRIMARY Triumph Engine Control Systems Llc (USA)
701-8 Stanley Engineered Fastening Llc (USA)
KR8-15 Stanley Engineered Fastening Llc (USA)
Related Parts
5365-00-031-0387INTERCHANGEABLE
RING,LOCK,KEYED
5815-00-126-8182INTERCHANGEABLE
BAR
74208
1650-00-907-0376INTERCHANGEABLE
LINER ASSEMBLY,BEARING
698249
5365-01-134-9900INTERCHANGEABLE
BUSHING,VALVE
74208

Frequently Asked Questions

What is NSN 5365-00-726-4010?

NSN 5365-00-726-4010 is a Ring,lock,keyed, manufactured by Triumph Engine Control Systems Llc, classified under FSC 5365 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5365-00-726-4010?

NSN 5365-00-726-4010 has 6 cross-referenced part numbers: 5365PL2015828 (Jednolity Indeks Materialowy - Uniform Material Index), 7420-8 (Stanley Engineered Fastening Llc), 69824-9 (Hamilton Sundstrand Corporation Dba Collins Aerospace), 28903-12 (Triumph Engine Control Systems Llc), 701-8 (Stanley Engineered Fastening Llc) and 1 more.

What NSN replaces 5365-00-726-4010?

There are 4 known substitutes for 5365-00-726-4010: 5365-00-031-0387, 5815-00-126-8182, 1650-00-907-0376 and 1 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 28903-12?

Key specifications for 28903-12: Overall Outside Diameter: 0.495 INCHES MINIMUM AND 0.500 INCHES MAXIMUM IN; Material: STEEL CORROSION RESISTING; Overall Height: 0.047 INCHES MINIMUM AND 0.052 INCHES MAXIMUM IN; Key Width: 0.086 INCHES MINIMUM AND 0.091 INCHES MAXIMUM IN. 6 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5365-00-726-4010 still in active supply?

NSN 5365-00-726-4010 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.

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