PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

11A8443Bearing,washer,thrust

Napco International Llc Dba Napco International Inc · NSN 3120-00-661-5662 · FSC 3120 · No Item Name Available
Verified by PartsTable
NSN 3120-00-661-5662 — this item is cataloged by the U.S. Government under National Stock Number 3120-00-661-5662. Primary manufacturer part number: 11A8443.
Features
  • Bearing,washer,thrust — FSC 3120
  • Cross-Sectional Shape Style: RECTANGULAR
  • Material: COPPER ALLOY OVERALL
  • Style Designator: ROUND
  • Corner Shape: SQUARE ALL CORNERS
  • Lubrication Feature: PERFORATION FLAT BEARING SURFACE
  • Lubrication Feature: GROOVE RIGHT END SURFACE
  • Bearing Surface Hole Diameter: 0.2500 INCHES NOMINAL FIRST 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 3120-00-661-5662, is classified within Federal Supply Class 3120 (No Item Name Available) of the Bearings group. The primary manufacturer of record is Napco International Llc Dba Napco International Inc. Government technical data includes 14 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 10 commercial cross-references from 9 manufacturers, enabling identification through both NSN and commercial part number lookups. 6 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN3120-00-661-5662
Primary Part Number11A8443
Item NameBearing,washer,thrust
FSC / FSG3120 / 31 — No Item Name Available
ManufacturerNapco International Llc Dba Napco International Inc
StatusCANCELLED
Cross-Sectional Shape StyleRECTANGULAR
MaterialCOPPER ALLOY OVERALL
Style DesignatorROUND
Corner ShapeSQUARE ALL CORNERS
Lubrication FeaturePERFORATION FLAT BEARING SURFACE
Lubrication FeatureGROOVE RIGHT END SURFACE
Bearing Surface Hole Diameter0.2500 INCHES NOMINAL FIRST IN
Hardness Rating50.0 ROCKWELL C MINIMUM AND 65.0 ROCKWELL C MAXIMUM OVERALL
Bearing Surface Hole Quantity4 FIRST
Lubrication FeatureGROOVE LEFT END SURFACE
Outside Diameter4.0000 INCHES NOMINAL IN
Overall Thickness0.0580 INCHES MINIMUM AND 0.0620 INCHES MAXIMUM IN
Center Hole Shape StyleROUND
Diameter2.3170 INCHES MINIMUM AND 2.3220 INCHES MAXIMUM IN
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 6
4820-00-036-24248006-17 INTERCHANGEABLE
Seat,valve
Emerson Automation Solutions Final Control Us Lp Div Navy Product Team
3110-00-156-5353 INTERCHANGEABLE
Bearing,ball,annular
5640-00-618-7515 INTERCHANGEABLE
Insulation Tape,thermal
5965-01-264-1738 INTERCHANGEABLE
Cover,loudspeaker
5985-01-316-791090423 INTERCHANGEABLE
Cover,antenna
Preventative Maintenance Inc
5310-01-358-311690423 INTERCHANGEABLE
Washer,slotted
Aerocontrolex Group, Inc. Div Talley Actuators
Cross-Reference Index
Part NumberManufacturer
XD601 Seagrave Corp the (USA)
11A8443 PRIMARY Napco International Llc Dba Napco International Inc (USA)
11EHT43 PRIMARY Mack Trucks Inc Parts Opn (USA)
4NFG0638 PRIMARY Volvo Trucks North America, Inc. Dba (foreign Parent Is Volvo Lastvagnar Ab, Goteborg, Sweden.) (USA)
46724C Diamond Reo Truck Co (USA)
078988 General Motors Llc Dba General Motors Llc (USA)
078988 General Motors Corp (USA)
90423 White Motor Corp (USA)
322D5 Diamond Reo Truck Co (USA)
322D5 PRIMARY Zf Active Safety and Electronics Us Llc Div Trw Commercial Steering Systems (USA)
Related Parts
4820-00-036-2424INTERCHANGEABLE
SEAT,VALVE
8006-17
3110-00-156-5353INTERCHANGEABLE
BEARING,BALL,ANNULAR
5640-00-618-7515INTERCHANGEABLE
INSULATION TAPE,THERMAL
5965-01-264-1738INTERCHANGEABLE
COVER,LOUDSPEAKER
5985-01-316-7910INTERCHANGEABLE
COVER,ANTENNA
90423
5310-01-358-3116INTERCHANGEABLE
WASHER,SLOTTED
90423

Frequently Asked Questions

What is NSN 3120-00-661-5662?

NSN 3120-00-661-5662 is a Bearing,washer,thrust, manufactured by Napco International Llc Dba Napco International Inc, classified under FSC 3120 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 3120-00-661-5662?

NSN 3120-00-661-5662 has 10 cross-referenced part numbers: XD601 (Seagrave Corp the), 11A8443 (Napco International Llc Dba Napco International Inc), 11EHT43 (Mack Trucks Inc Parts Opn), 4NFG0638 (Volvo Trucks North America, Inc. Dba (foreign Parent Is Volvo Lastvagnar Ab, Goteborg, Sweden.)), 46724C (Diamond Reo Truck Co) and 5 more.

What NSN replaces 3120-00-661-5662?

There are 6 known substitutes for 3120-00-661-5662: 4820-00-036-2424, 3110-00-156-5353, 5640-00-618-7515 and 3 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 11A8443?

Key specifications for 11A8443: Cross-Sectional Shape Style: RECTANGULAR; Material: COPPER ALLOY OVERALL; Style Designator: ROUND; Corner Shape: SQUARE ALL CORNERS. 15 total characteristics are documented in the Federal Logistics Information System.

Is NSN 3120-00-661-5662 still in active supply?

NSN 3120-00-661-5662 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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