PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

MILB5687TYPE1C0MP0SITI0NABearing,sleeve

Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M · NSN 3120-00-534-5810 · FSC 3120 · No Item Name Available
Verified by PartsTable
NSN 3120-00-534-5810 — this item is cataloged by the U.S. Government under National Stock Number 3120-00-534-5810. Primary manufacturer part number: MILB5687TYPE1C0MP0SITI0NA.
Features
  • Bearing,sleeve — FSC 3120
  • Material: OIL LUBRICATING LUBRICATION
  • Material: COPPER ALLOY OVERALL
  • Material Document and Classification: MIL-B-5687,TYPE 1,COMP A OR COMP B MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
  • Corner Shape: SQUARE ALL CORNERS
  • Style Designator: SOLID, PLAIN, NO OUTSIDE FLANGES
  • Body Outside Diameter: 1.2520 INCHES MINIMUM AND 1.2530 INCHES MAXIMUM IN
  • Nondefinitive Spec/std Data: 1 TYPE AND A COMPOSITION OR B COMPOSITION
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 3120-00-534-5810, is classified within Federal Supply Class 3120 (No Item Name Available) of the Bearings group. The primary manufacturer of record is Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M. Government technical data includes 8 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 1 manufacturer, 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
NSN3120-00-534-5810
Primary Part NumberMILB5687TYPE1C0MP0SITI0NA
Item NameBearing,sleeve
FSC / FSG3120 / 31 — No Item Name Available
ManufacturerMilitary Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
StatusACTIVE
MaterialOIL LUBRICATING LUBRICATION
MaterialCOPPER ALLOY OVERALL
Material Document and ClassificationMIL-B-5687,TYPE 1,COMP A OR COMP B MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
Corner ShapeSQUARE ALL CORNERS
Style DesignatorSOLID, PLAIN, NO OUTSIDE FLANGES
Body Outside Diameter1.2520 INCHES MINIMUM AND 1.2530 INCHES MAXIMUM IN
Nondefinitive Spec/std Data1 TYPE AND A COMPOSITION OR B COMPOSITION
Body Inside Diameter1.1270 INCHES MINIMUM AND 1.1280 INCHES MAXIMUM IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
3120-00-522-6513 INTERCHANGEABLE
Bearing,sleeve
3120-00-534-5776 INTERCHANGEABLE
Bearing,sleeve
3120-00-534-5777 INTERCHANGEABLE
Bearing,sleeve
3120-00-625-8226 INTERCHANGEABLE
Bearing,sleeve
3120-00-661-3513 INTERCHANGEABLE
Bearing,sleeve
3120-00-661-3544AA1212-4 INTERCHANGEABLE
Bearing,sleeve
Chrysler Corp Amplex Div
3120-00-661-5849B260-0245 INTERCHANGEABLE
Bearing,sleeve
Atlas Brass Foundry Inc
3120-00-661-7687F838-1 INTERCHANGEABLE
Bearing,sleeve
Chrysler Corp Amplex Div
3120-00-661-9036 INTERCHANGEABLE
Bearing,sleeve
3120-00-662-2538 INTERCHANGEABLE
Bearing,sleeve
Cross-Reference Index
Part NumberManufacturer
MILB5687TYPE1C0MP0SITI0NA Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
MILB5687TYPE1C0MP0SITI0NB Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
Related Parts
3120-00-522-6513INTERCHANGEABLE
BEARING,SLEEVE
3120-00-534-5776INTERCHANGEABLE
BEARING,SLEEVE
3120-00-534-5777INTERCHANGEABLE
BEARING,SLEEVE
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
3120-00-661-7687INTERCHANGEABLE
BEARING,SLEEVE
F838-1
3120-00-661-9036INTERCHANGEABLE
BEARING,SLEEVE
3120-00-662-2538INTERCHANGEABLE
BEARING,SLEEVE
3120-00-728-6055INTERCHANGEABLE
BEARING,SLEEVE
3120-00-752-6484INTERCHANGEABLE
BEARING,SLEEVE
A2304-6

Frequently Asked Questions

What is NSN 3120-00-534-5810?

NSN 3120-00-534-5810 is a Bearing,sleeve, manufactured by Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M, classified under FSC 3120 (No Item Name Available). Status: active.

What are the part numbers for NSN 3120-00-534-5810?

NSN 3120-00-534-5810 has 2 cross-referenced part numbers: MILB5687TYPE1C0MP0SITI0NA (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), MILB5687TYPE1C0MP0SITI0NB (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M).

What NSN replaces 3120-00-534-5810?

There are 12 known substitutes for 3120-00-534-5810: 3120-00-522-6513, 3120-00-534-5776, 3120-00-534-5777 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of MILB5687TYPE1C0MP0SITI0NA?

Key specifications for MILB5687TYPE1C0MP0SITI0NA: Overall Length: 0.7500 INCHES NOMINAL IN; Material: OIL LUBRICATING LUBRICATION; Material: COPPER ALLOY OVERALL; Material Document and Classification: MIL-B-5687,TYPE 1,COMP A OR COMP B MIL SPEC SINGLE MATERIAL RESPONSE OVERALL. 9 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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