PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

44949Retainer,helical Compression Spr

Paccar Government Group Co Yarrow Bay Office Pk · NSN 5340-00-939-1288 · FSC 5340 · No Item Name Available
Verified by PartsTable
NSN 5340-00-939-1288 — this item is cataloged by the U.S. Government under National Stock Number 5340-00-939-1288. Primary manufacturer part number: 44949.
Features
  • Retainer,helical Compression Spr — FSC 5340
  • Flange Diameter: 1.250 INCHES NOMINAL IN
  • Outside Chamfer Angle in Deg: 90.0
  • FSC Application Data: CLUTCH ASSEMBLIES
  • Style Designator: PARALLEL
  • Material: PLASTIC
  • Flange Thickness: 0.062 INCHES NOMINAL IN
  • Casehardening Indicator: NOT CASEHARDENED
Applications
  • Applications requiring Plastic construction
General Description

The Retainer,helical Compression Spr, cataloged under National Stock Number 5340-00-939-1288, is classified within Federal Supply Class 5340 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Paccar Government Group Co Yarrow Bay Office Pk. Government technical data includes 9 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. 2 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active. Unit of issue: EA.

Technical Specifications
ParameterValue
NSN5340-00-939-1288
Primary Part Number44949
Item NameRetainer,helical Compression Spr
FSC / FSG5340 / 53 — No Item Name Available
ManufacturerPaccar Government Group Co Yarrow Bay Office Pk
StatusACTIVE
Flange Diameter1.250 INCHES NOMINAL IN
Outside Chamfer Angle in Deg90.0
FSC Application DataCLUTCH ASSEMBLIES
Style DesignatorPARALLEL
MaterialPLASTIC
Flange Thickness0.062 INCHES NOMINAL IN
Casehardening IndicatorNOT CASEHARDENED
Body Outside Diameter1.000 INCHES NOMINAL IN
Body Inside Diameter0.750 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Unit of IssueEA
Verified Substitutes 2
5985-00-955-992044949 INTERCHANGEABLE
Seal,waveguide
Frontgrade Technologies Inc.
4820-01-281-148644949 INTERCHANGEABLE
Stem,fluid Valve
Flowserve Inc
Cross-Reference Index
Part NumberManufacturer
44949 Paccar Government Group Co Yarrow Bay Office Pk (USA)
Related Parts
5985-00-955-9920INTERCHANGEABLE
SEAL,WAVEGUIDE
44949
4820-01-281-1486INTERCHANGEABLE
STEM,FLUID VALVE
44949

Frequently Asked Questions

What is NSN 5340-00-939-1288?

NSN 5340-00-939-1288 is a Retainer,helical Compression Spr, manufactured by Paccar Government Group Co Yarrow Bay Office Pk, classified under FSC 5340 (No Item Name Available). Status: active.

What are the part numbers for NSN 5340-00-939-1288?

NSN 5340-00-939-1288 has 1 cross-referenced part number: 44949 (Paccar Government Group Co Yarrow Bay Office Pk).

What NSN replaces 5340-00-939-1288?

There are 2 known substitutes for 5340-00-939-1288: 5985-00-955-9920, 4820-01-281-1486. Verify interchangeability with system specifications before substitution.

What are the specifications of 44949?

Key specifications for 44949: Flange Diameter: 1.250 INCHES NOMINAL IN; Outside Chamfer Angle in Deg: 90.0; FSC Application Data: CLUTCH ASSEMBLIES; Style Designator: PARALLEL. 10 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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