PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

28991-2Plug,protective,dust and Moistur

Triumph Engine Control Systems Llc · NSN 5340-00-530-4854 · FSC 5340 · No Item Name Available
Verified by PartsTable
NSN 5340-00-530-4854 — this item is cataloged by the U.S. Government under National Stock Number 5340-00-530-4854. Primary manufacturer part number: 28991-2.
Features
  • Plug,protective,dust and Moistur — FSC 5340
  • Features Provided: BEVELED SEAT
  • Material: ALUMINUM
  • Overall Diameter: 0.563 INCHES NOMINAL IN
  • Design Type: THREADED
  • Thread Class: 2A A
  • Drive Type: SERRATED
  • Thread Size and Series/type Designator: 3/8-24 UNF
Applications
  • Applications requiring Aluminum construction
General Description

The Plug,protective,dust and Moistur, cataloged under National Stock Number 5340-00-530-4854, is classified within Federal Supply Class 5340 (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 7 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 8 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5340-00-530-4854
Primary Part Number28991-2
Item NamePlug,protective,dust and Moistur
FSC / FSG5340 / 53 — No Item Name Available
ManufacturerTriumph Engine Control Systems Llc
StatusACTIVE
Features ProvidedBEVELED SEAT
MaterialALUMINUM
Overall Diameter0.563 INCHES NOMINAL IN
Design TypeTHREADED
Thread Class2A A
Drive TypeSERRATED
Thread Size and Series/type Designator3/8-24 UNF
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 8
5340-01-154-9312FP-3 SUCCESSOR
Striker Plate
Techmar Corp Dba Techmar Corp Div 05/01/2019
5930-00-636-0133L218796-1 INTERCHANGEABLE
Switch,toggle
Raytheon Company Dba Raytheon Co
3120-00-652-0023SP3 INTERCHANGEABLE
Bearing,washer,thrust
Morton Machine Works
5930-00-833-48332041892 INTERCHANGEABLE
Switch,toggle
Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier
5820-01-299-98413020 INTERCHANGEABLE
Camera,television
Nec Electronics Usa Inc Electronic Arrays Div
5995-01-587-5710SP-3 INTERCHANGEABLE
Cable Assembly,special Purpose,e
Clear-Com Intercom Systems
6635-01-614-0439SP3 INTERCHANGEABLE
Probe,eddy Current
Zetec Inc
6650-01-651-0436SP-3 INTERCHANGEABLE
Support,optical Instrument
Newport Corp
Cross-Reference Index
Part NumberManufacturer
5340PL1879470 Jednolity Indeks Materialowy - Uniform Material Index (POL)
28991-2 PRIMARY Triumph Engine Control Systems Llc (USA)
SP3 PRIMARY Tubing Seal Cap Div of Vsi Corp Sub of Fairchild Industries Inc (USA)
Related Parts
5340-01-154-9312SUCCESSOR
STRIKER PLATE
FP-3
5930-00-636-0133INTERCHANGEABLE
SWITCH,TOGGLE
L218796-1
3120-00-652-0023INTERCHANGEABLE
BEARING,WASHER,THRUST
SP3
5930-00-833-4833INTERCHANGEABLE
SWITCH,TOGGLE
2041892
5820-01-299-9841INTERCHANGEABLE
CAMERA,TELEVISION
3020
5995-01-587-5710INTERCHANGEABLE
CABLE ASSEMBLY,SPECIAL PURPOSE,E
SP-3
6635-01-614-0439INTERCHANGEABLE
PROBE,EDDY CURRENT
SP3
6650-01-651-0436INTERCHANGEABLE
SUPPORT,OPTICAL INSTRUMENT
SP-3

Frequently Asked Questions

What is NSN 5340-00-530-4854?

NSN 5340-00-530-4854 is a Plug,protective,dust and Moistur, manufactured by Triumph Engine Control Systems Llc, classified under FSC 5340 (No Item Name Available). Status: active.

What are the part numbers for NSN 5340-00-530-4854?

NSN 5340-00-530-4854 has 3 cross-referenced part numbers: 5340PL1879470 (Jednolity Indeks Materialowy - Uniform Material Index), 28991-2 (Triumph Engine Control Systems Llc), SP3 (Tubing Seal Cap Div of Vsi Corp Sub of Fairchild Industries Inc).

What NSN replaces 5340-00-530-4854?

There are 8 known substitutes for 5340-00-530-4854: 5340-01-154-9312, 5930-00-636-0133, 3120-00-652-0023 and 5 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 28991-2?

Key specifications for 28991-2: Features Provided: BEVELED SEAT; Material: ALUMINUM; Overall Diameter: 0.563 INCHES NOMINAL IN; Design Type: THREADED. 7 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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