PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

20021Bearing,washer,thrust

Western Mfg Co · NSN 3120-00-247-4817 · FSC 3120 · No Item Name Available
Verified by PartsTable
NSN 3120-00-247-4817 — this item is cataloged by the U.S. Government under National Stock Number 3120-00-247-4817. Primary manufacturer part number: 20021.
Features
  • Bearing,washer,thrust — FSC 3120
  • Cross-Sectional Shape Style: RECTANGULAR
  • Material: LUBRICANT LUBRICATION
  • Style Designator: ROUND
  • Lubrication Feature: GROOVE FLAT BEARING SURFACE
  • Outside Diameter: 1.4900 INCHES MINIMUM AND 1.5100 INCHES MAXIMUM IN
  • Center Hole Shape Style: ROUND
  • Diameter: 0.8855 INCHES MINIMUM AND 0.8955 INCHES MAXIMUM IN
Applications
  • Rotating machinery support and alignment
  • Shaft load distribution
  • Precision spindle assemblies
  • Structural fastening and assembly
  • Equipment mounting
General Description

The Bearing,washer,thrust, cataloged under National Stock Number 3120-00-247-4817, is classified within Federal Supply Class 3120 (No Item Name Available) of the Bearings group. The primary manufacturer of record is Western Mfg Co. Government technical data includes 11 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN3120-00-247-4817
Primary Part Number20021
Item NameBearing,washer,thrust
FSC / FSG3120 / 31 — No Item Name Available
ManufacturerWestern Mfg Co
StatusACTIVE
Cross-Sectional Shape StyleRECTANGULAR
MaterialLUBRICANT LUBRICATION
Style DesignatorROUND
Lubrication FeatureGROOVE FLAT BEARING SURFACE
Outside Diameter1.4900 INCHES MINIMUM AND 1.5100 INCHES MAXIMUM IN
Center Hole Shape StyleROUND
Diameter0.8855 INCHES MINIMUM AND 0.8955 INCHES MAXIMUM IN
MaterialCOPPER ALLOY OVERALL
Overall Thickness0.1225 INCHES MINIMUM AND 0.1275 INCHES MAXIMUM IN
Corner ShapeSQUARE ALL CORNERS
Material Document and ClassificationMIL-B-5687,TY 1,COMP A MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
5133-00-234-5141 INTERCHANGEABLE
Drill,twist
5960-00-270-33267583084 INTERCHANGEABLE
Retainer,electron Tube
Us Army Aviation and Missile Command
5910-00-280-761120021 INTERCHANGEABLE
Capacitor,fixed,paper Dielectric
Cd Snow Hill, Llc
5920-00-280-8342 INTERCHANGEABLE
Fuse,cartridge
5360-00-498-068620021 INTERCHANGEABLE
Spring,helical,compression
Circor Aerospace, Inc. Dba Circor Aerospace Inc
5950-00-647-705406703REVG INTERCHANGEABLE
Transformer,audio Frequency
L3harris Technologies, Inc. Div Space and Airborne Systems
3020-00-938-897254A50B194 INTERCHANGEABLE
Pulley,container
Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier
3040-01-091-38452002-1 INTERCHANGEABLE
Connecting Link,rigid
Tyee Aircraft Inc Div Tyee Aircraft
4820-01-120-0485 INTERCHANGEABLE
Bonnet,valve
2910-01-245-390320021 INTERCHANGEABLE
Cylinder,quick Start
Kold-Ban International Ltd Div Kbi
Cross-Reference Index
Part NumberManufacturer
20021 Western Mfg Co (USA)
75-1216 Libby Power Systems, Llc (USA)
Related Parts
5133-00-234-5141INTERCHANGEABLE
DRILL,TWIST
5960-00-270-3326INTERCHANGEABLE
RETAINER,ELECTRON TUBE
7583084
5910-00-280-7611INTERCHANGEABLE
CAPACITOR,FIXED,PAPER DIELECTRIC
20021
5920-00-280-8342INTERCHANGEABLE
FUSE,CARTRIDGE
5360-00-498-0686INTERCHANGEABLE
SPRING,HELICAL,COMPRESSION
20021
5950-00-647-7054INTERCHANGEABLE
TRANSFORMER,AUDIO FREQUENCY
06703REVG
3020-00-938-8972INTERCHANGEABLE
PULLEY,CONTAINER
54A50B194
3040-01-091-3845INTERCHANGEABLE
CONNECTING LINK,RIGID
2002-1
4820-01-120-0485INTERCHANGEABLE
BONNET,VALVE
2910-01-245-3903INTERCHANGEABLE
CYLINDER,QUICK START
20021
5330-01-273-9966INTERCHANGEABLE
GASKET
20021
2540-01-560-2062INTERCHANGEABLE
CONTROL BOX,ELECTRICAL,VEHICULAR
6031580

Frequently Asked Questions

What is NSN 3120-00-247-4817?

NSN 3120-00-247-4817 is a Bearing,washer,thrust, manufactured by Western Mfg Co, classified under FSC 3120 (No Item Name Available). Status: active.

What are the part numbers for NSN 3120-00-247-4817?

NSN 3120-00-247-4817 has 2 cross-referenced part numbers: 20021 (Western Mfg Co), 75-1216 (Libby Power Systems, Llc).

What NSN replaces 3120-00-247-4817?

There are 12 known substitutes for 3120-00-247-4817: 5133-00-234-5141, 5960-00-270-3326, 5910-00-280-7611 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 20021?

Key specifications for 20021: Cross-Sectional Shape Style: RECTANGULAR; Material: LUBRICANT LUBRICATION; Style Designator: ROUND; Lubrication Feature: GROOVE FLAT BEARING SURFACE. 11 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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