PartsTable TECHNICAL DATA SHEET
NSN 3120-00-273-5877Government record, cited

Bearing, Sleeve3120-00-273-5877

NSN 3120-00-273-5877 · NIIN 002735877 · Part number B2-6445
Continental Emsco Co Skagit Products Div · FSC 3120 — Bearings, Plain, Unmounted · FSG 31 — Bearings · CAGE 55102
Government record, cited
NSN 3120-00-273-5877 — this item is cataloged by the U.S. Government under National Stock Number 3120-00-273-5877. Manufacturer of record part number: B2-6445.
Also searched as  3120-00-273-5877 · 3120002735877 · NIIN 002735877 · 00-273-5877 · FSC 3120 Bearings, Plain, Unmounted · CAGE 55102 · B2-6445
Nearby stock numbers  ·
Features
  • Bearing,sleeve — FSC 3120
  • Surface Finish: 250.0 MICROINCHES LEFT END SURFACE OF BODY
  • Surface Finish: 250.0 MICROINCHES RIGHT END SURFACE OF BODY
  • Surface Finish: 160.0 MICROINCHES INSIDE DIAMETER SURFACE OF BODY
  • Surface Finish: 160.0 MICROINCHES OUTSIDE DIAMETER SURFACE OF BODY
  • Corner Shape: SQUARE ALL CORNERS
  • Body Outside Diameter: 3.5030 INCHES MINIMUM AND 3.5040 INCHES MAXIMUM IN
  • Style Designator: SOLID, PLAIN, NO OUTSIDE FLANGES
Identification
  • NSN: 3120-00-273-5877
  • NIIN: 002735877
  • FSC: 3120 — Bearings, Plain, Unmounted
  • FSG: 31 — Bearings
  • Primary part number: B2-6445
  • Manufacturer: Continental Emsco Co Skagit Products Div
General Description

The Bearing,sleeve, cataloged under National Stock Number 3120-00-273-5877, is classified within Federal Supply Class 3120 (Bearings, Plain, Unmounted) of the Bearings group. The manufacturer of record is Continental Emsco Co Skagit Products Div. Government technical data includes 10 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN3120-00-273-5877
Primary Part NumberB2-6445
Item NameBearing,sleeve
FSC / FSG3120 / 31 — Bearings, Plain, Unmounted
ManufacturerContinental Emsco Co Skagit Products Div
StatusACTIVE
Surface Finish250.0 MICROINCHES LEFT END SURFACE OF BODY
Surface Finish250.0 MICROINCHES RIGHT END SURFACE OF BODY
Surface Finish160.0 MICROINCHES INSIDE DIAMETER SURFACE OF BODY
Surface Finish160.0 MICROINCHES OUTSIDE DIAMETER SURFACE OF BODY
Corner ShapeSQUARE ALL CORNERS
Body Outside Diameter3.5030 INCHES MINIMUM AND 3.5040 INCHES MAXIMUM IN
Style DesignatorSOLID, PLAIN, NO OUTSIDE FLANGES
Body Inside Diameter3.0090 INCHES MINIMUM AND 3.0110 INCHES MAXIMUM IN
Lubricant Accommodation StyleGROOVED FIGURE 8 W/RADIAL GROOVE EACH END W
MaterialCOPPER ALLOY 958 OVERALL
Lifecycle & Compliance
Acquisition StatusACTIVE
DEMIL CodeDEMIL A — No Demilitarization Required
HazardNo hazard code in the DLA record (HMIC N)
Criticality CodeX
Cross-Reference Index
Part NumberManufacturer
B2-6445 PRIMARY Continental Emsco Co Skagit Products Div (USA)
No interchangeability data on file.
Other items in FSC 3120 — Bearings, Plain, Unmounted
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
3120-00-001-1288
3120-00-001-1288 · Item name not on file
3120-00-001-1835
3120-00-001-1835 · Item name not on file
3120-00-001-1838
3120-00-001-1838 · Item name not on file
3120-00-001-1928
3120-00-001-1928 · Item name not on file
3120-00-001-1934
3120-00-001-1934 · Item name not on file
3120-00-001-3933
3120-00-001-3933 · Item name not on file
3120-00-001-3937
3120-00-001-3937 · Item name not on file
3120-00-001-3938
3120-00-001-3938 · Item name not on file

Frequently Asked Questions

What is NSN 3120-00-273-5877?

NSN 3120-00-273-5877 is a Bearing,sleeve, manufactured by Continental Emsco Co Skagit Products Div, classified under FSC 3120, Bearings, Plain, Unmounted. Status: active.

What part numbers are listed for NSN 3120-00-273-5877?

NSN 3120-00-273-5877 has 1 manufacturer part number on file: B2-6445 (Continental Emsco Co Skagit Products Div).

What are the specifications of B2-6445?

Key specifications for B2-6445: Surface Finish: 250.0 MICROINCHES LEFT END SURFACE OF BODY; Surface Finish: 250.0 MICROINCHES RIGHT END SURFACE OF BODY; Surface Finish: 160.0 MICROINCHES INSIDE DIAMETER SURFACE OF BODY; Surface Finish: 160.0 MICROINCHES OUTSIDE DIAMETER SURFACE OF BODY. 10 specifications are documented in the U.S. Government catalog.

Is NSN 3120-00-273-5877 hazardous material?

No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.

Sources

U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.

U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.

✓ Data cited from the U.S. Government catalog; commercial cross-references from OEM and certified industry sources.
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