PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

FF838-1Bearing,sleeve

Beemer Precision Inc · NSN 3120-00-661-7687 · FSC 3120 · No Item Name Available
Verified by PartsTable
NSN 3120-00-661-7687 — this item is cataloged by the U.S. Government under National Stock Number 3120-00-661-7687. Primary manufacturer part number: FF838-1.
Features
  • Bearing,sleeve — FSC 3120
  • Style Designator: SOLID, EXTERNAL FLANGE ONE END
  • Corner Shape: SQUARE INSIDE RIGHT CORNER
  • Corner Shape: SQUARE LEFT FLANGE OUTSIDE RIGHT CORNER
  • Corner Shape: SQUARE OUTSIDE RIGHT CORNER
  • Corner Shape: SQUARE INSIDE LEFT CORNER
  • Material: OIL LUBRICATING LUBRICATION
  • Material: COPPER ALLOY OVERALL
Applications
  • Rotating machinery support and alignment
  • Shaft load distribution
  • Precision spindle assemblies
  • Applications requiring Oil Lubricating Lubrication construction
General Description

The Bearing,sleeve, cataloged under National Stock Number 3120-00-661-7687, is classified within Federal Supply Class 3120 (No Item Name Available) of the Bearings group. The primary manufacturer of record is Beemer Precision Inc. Government technical data includes 16 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 18 commercial cross-references from 13 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN3120-00-661-7687
Primary Part NumberFF838-1
Item NameBearing,sleeve
FSC / FSG3120 / 31 — No Item Name Available
ManufacturerBeemer Precision Inc
StatusCANCELLED
Style DesignatorSOLID, EXTERNAL FLANGE ONE END
Corner ShapeSQUARE INSIDE RIGHT CORNER
Corner ShapeSQUARE LEFT FLANGE OUTSIDE RIGHT CORNER
Corner ShapeSQUARE OUTSIDE RIGHT CORNER
Corner ShapeSQUARE INSIDE LEFT CORNER
MaterialOIL LUBRICATING LUBRICATION
MaterialCOPPER ALLOY OVERALL
Nondefinitive Spec/std Data1 TYPE AND B COMPOSITION
Corner ShapeSQUARE OUTSIDE LEFT CORNER
Flange Width0.0600 INCHES MINIMUM AND 0.0650 INCHES MAXIMUM IN
Flange Outside Diameter0.9975 INCHES MINIMUM AND 1.0025 INCHES MAXIMUM IN
Body Outside Diameter0.8760 INCHES MINIMUM AND 0.8770 INCHES MAXIMUM IN
Material Document and ClassificationMIL-B-5687,TY 1,COMP B MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
Corner ShapeSQUARE LEFT FLANGE BODY CORNER
Departure From Cited DocumentBODY OD MODIFIED,BODY ID MODIFIED,O/A LG,FLANGE OD,AND FLANGE WIDTH MODIFIED
Body Inside Diameter0.7500 INCHES MINIMUM AND 0.7510 INCHES MAXIMUM IN
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 12
5930-00-106-72146084791-1 INTERCHANGEABLE
Switch,code Indicating Wheel
Lockheed Martin Corporation Div Rotary and Mission Systems
2915-00-335-7062199074 INTERCHANGEABLE
Housing Assy,compen
Honeywell International Inc Div Aerospace-South Bend (bendix Dr)
3120-00-522-6513 INTERCHANGEABLE
Bearing,sleeve
3120-00-534-5776 INTERCHANGEABLE
Bearing,sleeve
3120-00-534-5777 INTERCHANGEABLE
Bearing,sleeve
3120-00-534-5810 INTERCHANGEABLE
Bearing,sleeve
6105-00-548-1230299V1 INTERCHANGEABLE
Motor,direct Current
Bae Systems Information and Electronic Systems Integration Inc.
3120-00-572-2528FF838-1 INTERCHANGEABLE
Bearing,sleeve
Chrysler Corp Amplex Div
3120-00-625-8226 INTERCHANGEABLE
Bearing,sleeve
3120-00-661-3513 INTERCHANGEABLE
Bearing,sleeve
Cross-Reference Index
Part NumberManufacturer
K9757513PT8 General Electric Company (USA)
199074 Fwd Seagrave Holdings Lp (USA)
89-6-5557REVA Amf Inc World Headquarters (USA)
FF838-1 Chrysler Realty Company Llc Dba Daimler Chrysler (USA)
89-6-5557 Amf Inc World Headquarters (USA)
FF838-1 PRIMARY Beemer Precision Inc (USA)
FF838-1 Eagle-Picher Industries Inc Kingwell Div (USA)
F838-1 Chrysler Realty Company Llc Dba Daimler Chrysler (USA)
89-6-5158REVAPC1 Amf Inc World Headquarters (USA)
MILB5687TYPE1C0MP0SITI0NB Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
3240001PT8 Naval Ship Systems Command (USA)
K9757513P8 General Electric Company (USA)
GBV-B2-60-0007-21 B N L Industries Inc (USA)
64A98C278-1 Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier (USA)
FF838-1 Chrysler Corp Amplex Div (USA)
F838-1 PRIMARY Chrysler Corp Amplex Div (USA)
00213-0792 Harsco Corp Bmy-Combat Systems Div (USA)
00213-0792 Asrc Federal Facilities Logistics, Llc (USA)
Related Parts
5930-00-106-7214INTERCHANGEABLE
SWITCH,CODE INDICATING WHEEL
6084791-1
2915-00-335-7062INTERCHANGEABLE
HOUSING ASSY,COMPEN
199074
3120-00-522-6513INTERCHANGEABLE
BEARING,SLEEVE
3120-00-534-5776INTERCHANGEABLE
BEARING,SLEEVE
3120-00-534-5777INTERCHANGEABLE
BEARING,SLEEVE
3120-00-534-5810INTERCHANGEABLE
BEARING,SLEEVE
6105-00-548-1230INTERCHANGEABLE
MOTOR,DIRECT CURRENT
299V1
3120-00-572-2528INTERCHANGEABLE
BEARING,SLEEVE
FF838-1
3120-00-625-8226INTERCHANGEABLE
BEARING,SLEEVE
3120-00-661-3513INTERCHANGEABLE
BEARING,SLEEVE
3120-00-661-3544INTERCHANGEABLE
BEARING,SLEEVE
AA1212-4
3120-00-661-5849INTERCHANGEABLE
BEARING,SLEEVE
B260-0245

Frequently Asked Questions

What is NSN 3120-00-661-7687?

NSN 3120-00-661-7687 is a Bearing,sleeve, manufactured by Beemer Precision Inc, classified under FSC 3120 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 3120-00-661-7687?

NSN 3120-00-661-7687 has 18 cross-referenced part numbers: K9757513PT8 (General Electric Company), 199074 (Fwd Seagrave Holdings Lp), 89-6-5557REVA (Amf Inc World Headquarters), FF838-1 (Chrysler Realty Company Llc Dba Daimler Chrysler), 89-6-5557 (Amf Inc World Headquarters) and 13 more.

What NSN replaces 3120-00-661-7687?

There are 12 known substitutes for 3120-00-661-7687: 5930-00-106-7214, 2915-00-335-7062, 3120-00-522-6513 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of FF838-1?

Key specifications for FF838-1: Style Designator: SOLID, EXTERNAL FLANGE ONE END; Corner Shape: SQUARE INSIDE RIGHT CORNER; Corner Shape: SQUARE LEFT FLANGE OUTSIDE RIGHT CORNER; Corner Shape: SQUARE OUTSIDE RIGHT CORNER. 17 total characteristics are documented in the Federal Logistics Information System.

Is NSN 3120-00-661-7687 still in active supply?

NSN 3120-00-661-7687 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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