PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

77M69-20 ITEM 22Seat,helical Compression Spring

Electric Boat Corporation Div General Dynamics Electric Boat · NSN 5340-01-067-9044 · FSC 5340 · No Item Name Available
Verified by PartsTable
NSN 5340-01-067-9044 — this item is cataloged by the U.S. Government under National Stock Number 5340-01-067-9044. Primary manufacturer part number: 77M69-20 ITEM 22.
Features
  • Seat,helical Compression Spring — FSC 5340
  • First Step Diameter: 3.0500 INCHES MINIMUM AND 3.0540 INCHES MAXIMUM IN
  • End Diameter: 1.7770 INCHES MINIMUM AND 1.7780 INCHES MAXIMUM IN
  • Second End Diameter: 1.7770 INCHES MINIMUM AND 1.7780 INCHES MAXIMUM IN
  • Distance From End to First Step: 2.0000 INCHES NOMINAL IN
  • Design Type: SOLID
  • Material: PLASTIC POLYTETRAFLUOROETHYLENE
  • First Step Length: 0.1880 INCHES NOMINAL IN
Applications
  • Mechanical energy storage
  • Vibration dampening
  • Return mechanism operation
  • Applications requiring Plastic Polytetrafluoroethylene construction
General Description

The Seat,helical Compression Spring, cataloged under National Stock Number 5340-01-067-9044, is classified within Federal Supply Class 5340 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Electric Boat Corporation Div General Dynamics Electric Boat. Government technical data includes 10 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 3 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active. Unit of issue: EA.

Technical Specifications
ParameterValue
NSN5340-01-067-9044
Primary Part Number77M69-20 ITEM 22
Item NameSeat,helical Compression Spring
FSC / FSG5340 / 53 — No Item Name Available
ManufacturerElectric Boat Corporation Div General Dynamics Electric Boat
StatusACTIVE
First Step Diameter3.0500 INCHES MINIMUM AND 3.0540 INCHES MAXIMUM IN
End Diameter1.7770 INCHES MINIMUM AND 1.7780 INCHES MAXIMUM IN
Second End Diameter1.7770 INCHES MINIMUM AND 1.7780 INCHES MAXIMUM IN
Distance From End to First Step2.0000 INCHES NOMINAL IN
Design TypeSOLID
MaterialPLASTIC POLYTETRAFLUOROETHYLENE
First Step Length0.1880 INCHES NOMINAL IN
Material Document and ClassificationMIL-P-19468 MIL SPEC SINGLE MATERIAL RESPONSE
Style DesignatorSEAT
Bore Diameter1.2500 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Unit of IssueEA
Verified Substitutes 3
3110-00-181-9300 INTERCHANGEABLE
Bearing,roller,journal
5330-00-856-8397 INTERCHANGEABLE
Seal Ring,metal
5935-01-361-43015D0191-2 INTERCHANGEABLE
Connector,plug,electrical
The Boeing Company
Cross-Reference Index
Part NumberManufacturer
DEI-1255/22 Down East, Inc. (USA)
77M69-20 ITEM 22 PRIMARY Electric Boat Corporation Div General Dynamics Electric Boat (USA)
1255/22 Down East, Inc. (USA)
Related Parts
3110-00-181-9300INTERCHANGEABLE
BEARING,ROLLER,JOURNAL
5330-00-856-8397INTERCHANGEABLE
SEAL RING,METAL
5935-01-361-4301INTERCHANGEABLE
CONNECTOR,PLUG,ELECTRICAL
5D0191-2

Frequently Asked Questions

What is NSN 5340-01-067-9044?

NSN 5340-01-067-9044 is a Seat,helical Compression Spring, manufactured by Electric Boat Corporation Div General Dynamics Electric Boat, classified under FSC 5340 (No Item Name Available). Status: active.

What are the part numbers for NSN 5340-01-067-9044?

NSN 5340-01-067-9044 has 3 cross-referenced part numbers: DEI-1255/22 (Down East, Inc.), 77M69-20 ITEM 22 (Electric Boat Corporation Div General Dynamics Electric Boat), 1255/22 (Down East, Inc.).

What NSN replaces 5340-01-067-9044?

There are 3 known substitutes for 5340-01-067-9044: 3110-00-181-9300, 5330-00-856-8397, 5935-01-361-4301. Verify interchangeability with system specifications before substitution.

What are the specifications of 77M69-20 ITEM 22?

Key specifications for 77M69-20 ITEM 22: First Step Diameter: 3.0500 INCHES MINIMUM AND 3.0540 INCHES MAXIMUM IN; End Diameter: 1.7770 INCHES MINIMUM AND 1.7780 INCHES MAXIMUM IN; Second End Diameter: 1.7770 INCHES MINIMUM AND 1.7780 INCHES MAXIMUM IN; Distance From End to First Step: 2.0000 INCHES NOMINAL IN. 11 total characteristics are documented in the Federal Logistics Information System.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com