PartsTable TECHNICAL DATA SHEET
AUGUST 2026Technical Data Sheet

25-66751-2Isolator,shock,liquid Spring

The Boeing Company Div Defense · NSN 1440-00-001-2477 · FSC 1440 · No Item Name Available
Verified by PartsTable
NSN 1440-00-001-2477 — this item is cataloged by the U.S. Government under National Stock Number 1440-00-001-2477. Primary manufacturer part number: 25-66751-2.
Features
  • Isolator,shock,liquid Spring — FSC 1440
  • FSC Application Data: MISSILE SYSTEM LGM-30
  • General Characteristics Item Description: ASSEMBLY OF 1 CYLINDER,1 PISTON ROD,1 DUST COVER,1 DAMPER,2 BACKUP RINGS,1 LOCKING RING LOWER,12 ANTI EXTRUSION RING PINS,4 ANTI EXTRUSION RING DISC,2 ROD SLEEVE SEAL,2 DISC SEALS,2 ANTI EXTRUSION RING,1 CABLE LOCKING RING,1 SECONDARY BACK UP RING,1 BLEED VALVE,1 CHARGING VALVE,1 PISTON ROD SCRAPER
  • 1 verified cross-reference
  • Primary manufacturer: The Boeing Company Div Defense
Applications
  • Mechanical energy storage
  • Vibration dampening
  • Return mechanism operation
General Description

The Isolator,shock,liquid Spring, cataloged under National Stock Number 1440-00-001-2477, is classified within Federal Supply Class 1440 (No Item Name Available) of the Guided Missiles group. The primary manufacturer of record is The Boeing Company Div Defense. Government technical data includes 2 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. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN1440-00-001-2477
Primary Part Number25-66751-2
Item NameIsolator,shock,liquid Spring
FSC / FSG1440 / 14 — No Item Name Available
ManufacturerThe Boeing Company Div Defense
StatusACTIVE
FSC Application DataMISSILE SYSTEM LGM-30
General Characteristics Item DescriptionASSEMBLY OF 1 CYLINDER,1 PISTON ROD,1 DUST COVER,1 DAMPER,2 BACKUP RINGS,1 LOCKING RING LOWER,12 ANTI EXTRUSION RING PINS,4 ANTI EXTRUSION RING DISC,2 ROD SLEEVE SEAL,2 DISC SEALS,2 ANTI EXTRUSION RING,1 CABLE LOCKING RING,1 SECONDARY BACK UP RING,1 BLEED VALVE,1 CHARGING VALVE,1 PISTON ROD SCRAPER
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Cross-Reference Index
Part NumberManufacturer
25-66751-2 PRIMARY The Boeing Company Div Defense (USA)
Related Parts in Guided Missiles
1440-00-000-0161
SIGHT UNIT,STABLIZE
323400-142
1440-00-000-0162
SIGHT UNIT,STABLIZE
3234001-126
1440-00-001-1268
NO ITEM NAME AVAILABLE
1440-00-001-2476
SPRING ASSEMBLY,SHOCK ISOLATOR
25-66608-2
1440-00-001-3999
SPACER ASSEMBLY
8031359
1440-00-001-4000
NO ITEM NAME AVAILABLE
1440-00-001-4598
SWAYBRACE ASSY
32-94590-306
1440-00-001-4599
SWAYBRACE ASSY
32-94590-305

Frequently Asked Questions

What is NSN 1440-00-001-2477?

NSN 1440-00-001-2477 is a Isolator,shock,liquid Spring, manufactured by The Boeing Company Div Defense, classified under FSC 1440 (No Item Name Available). Status: active.

What are the part numbers for NSN 1440-00-001-2477?

NSN 1440-00-001-2477 has 1 cross-referenced part number: 25-66751-2 (The Boeing Company Div Defense).

What are the specifications of 25-66751-2?

Key specifications for 25-66751-2: FSC Application Data: MISSILE SYSTEM LGM-30; General Characteristics Item Description: ASSEMBLY OF 1 CYLINDER,1 PISTON ROD,1 DUST COVER,1 DAMPER,2 BACKUP RINGS,1 LOCKING RING LOWER,12 ANTI EXTRUSION RING PINS,4 ANTI EXTRUSION RING DISC,2 ROD SLEEVE SEAL,2 DISC SEALS,2 ANTI EXTRUSION RING,1 CABLE LOCKING RING,1 SECONDARY BACK UP RING,1 BLEED VALVE,1 CHARGING VALVE,1 PISTON ROD SCRAPER. 2 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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