PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet
MRO / Engines, Turbines, and Components / 2810-00-979-7520

257BPlug,vacuum Pump Dr

Textron Lycoming Inc Williamsport Plant · NSN 2810-00-979-7520 · FSC 2810 · No Item Name Available
Verified by PartsTable
NSN 2810-00-979-7520 — this item is cataloged by the U.S. Government under National Stock Number 2810-00-979-7520. Primary manufacturer part number: 257B.
MRO FSG 28 NO ITEM NAME AVAILABLE Technical Drawing
2810-00-979-7520 — No Item Name Available illustration
Features
  • Plug,vacuum Pump Dr — FSC 2810
  • 2 verified cross-references
  • Primary manufacturer: Textron Lycoming Inc Williamsport Plant
Applications
  • Fluid transfer and circulation
  • Cooling system maintenance
  • Industrial process pumping
General Description

The Plug,vacuum Pump Dr, cataloged under National Stock Number 2810-00-979-7520, is classified within Federal Supply Class 2810 (No Item Name Available) of the Engines, Turbines, and Components group. The primary manufacturer of record is Textron Lycoming Inc Williamsport Plant. This item has 2 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 7 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Catalog Facts
Item NamePlug,vacuum Pump Dr
FSC / FSG2810 — No Item Name Available (FSG 28)
ManufacturersSatair A/s (CAGE R1120); Textron Lycoming Inc Williamsport Plant (CAGE 80254)
Technical Specifications
ParameterValue
NSN2810-00-979-7520
Primary Part Number257B
Item NamePlug,vacuum Pump Dr
FSC / FSG2810 / 28 — No Item Name Available
ManufacturerTextron Lycoming Inc Williamsport Plant
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
⇄ Verified Substitutes 7
4310-00-173-5268257B INTERCHANGEABLE
Ring,piston
Curtiss-Wright Electro-Mechanical Corp Dba Steam & Air Solutions Div Curtiss-Wright Steam and Air Solutions
5945-00-247-83648193581 INTERCHANGEABLE
Relay,electromagnetic
Us Army Aviation and Missile Command
5940-00-269-2219257103 INTERCHANGEABLE
Post,binding,electrical
Halsit Holdings Llc Div Halsit Holdings, Llc Dba Abbatron
5342-01-163-0784601 INTERCHANGEABLE
Bracket,quick Release
Ingersoll-Rand Co Material Handling Div
4820-01-372-8101257B-14S INTERCHANGEABLE
Valve,expansion
Superior Valve Co
6625-01-457-7358257B INTERCHANGEABLE
Monitor,phase
Time Mark Corp
5210-01-480-2078 INTERCHANGEABLE
Gage,surface
Cross-Reference Index
Part NumberManufacturer
257B Satair A/s (DNK)
257B PRIMARY Textron Lycoming Inc Williamsport Plant (USA)
Related Parts
4310-00-173-5268INTERCHANGEABLE
RING,PISTON
257B
5945-00-247-8364INTERCHANGEABLE
RELAY,ELECTROMAGNETIC
8193581
5940-00-269-2219INTERCHANGEABLE
POST,BINDING,ELECTRICAL
257103
5342-01-163-0784INTERCHANGEABLE
BRACKET,QUICK RELEASE
601
4820-01-372-8101INTERCHANGEABLE
VALVE,EXPANSION
257B-14S
6625-01-457-7358INTERCHANGEABLE
MONITOR,PHASE
257B
5210-01-480-2078INTERCHANGEABLE
GAGE,SURFACE

Frequently Asked Questions

What is NSN 2810-00-979-7520?

NSN 2810-00-979-7520 is a Plug,vacuum Pump Dr, manufactured by Textron Lycoming Inc Williamsport Plant, classified under FSC 2810 (No Item Name Available). Status: active.

What are the part numbers for NSN 2810-00-979-7520?

NSN 2810-00-979-7520 has 2 cross-referenced part numbers: 257B (Satair A/s), 257B (Textron Lycoming Inc Williamsport Plant).

What NSN replaces 2810-00-979-7520?

There are 7 known substitutes for 2810-00-979-7520: 4310-00-173-5268, 5945-00-247-8364, 5940-00-269-2219 and 4 more. Verify interchangeability with system specifications before substitution.

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