PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

BACB10D86Bearing,sleeve

The Boeing Company Div Defense · NSN 3120-01-508-5012 · FSC 3120 · No Item Name Available
Verified by PartsTable
NSN 3120-01-508-5012 — this item is cataloged by the U.S. Government under National Stock Number 3120-01-508-5012. Primary manufacturer part number: BACB10D86.
Features
  • Bearing,sleeve — FSC 3120
  • Material: IRON ALLOY OVERALL
  • Style Designator: SOLID, PLAIN, NO OUTSIDE FLANGES
  • Material Document and Classification: MIL-B-5687,TYPE II,COMPOSITION B FED SPEC SINGLE MATERIAL RESPONSE OVERALL
  • Corner Shape: SQUARE ALL CORNERS
  • Body Outside Diameter: 0.3750 INCHES NOMINAL IN
  • Body Inside Diameter: 0.2570 INCHES NOMINAL IN
  • 5 verified cross-references
Applications
  • Rotating machinery support and alignment
  • Shaft load distribution
  • Precision spindle assemblies
  • Applications requiring Iron Alloy Overall construction
General Description

The Bearing,sleeve, cataloged under National Stock Number 3120-01-508-5012, is classified within Federal Supply Class 3120 (No Item Name Available) of the Bearings group. The primary manufacturer of record is The Boeing Company Div Defense. Government technical data includes 6 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 5 commercial cross-references from 5 manufacturers, enabling identification through both NSN and commercial part number lookups. 1 verified substitute exists in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN3120-01-508-5012
Primary Part NumberBACB10D86
Item NameBearing,sleeve
FSC / FSG3120 / 31 — No Item Name Available
ManufacturerThe Boeing Company Div Defense
StatusACTIVE
MaterialIRON ALLOY OVERALL
Style DesignatorSOLID, PLAIN, NO OUTSIDE FLANGES
Material Document and ClassificationMIL-B-5687,TYPE II,COMPOSITION B FED SPEC SINGLE MATERIAL RESPONSE OVERALL
Corner ShapeSQUARE ALL CORNERS
Body Outside Diameter0.3750 INCHES NOMINAL IN
Body Inside Diameter0.2570 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 1
5330-00-406-0772P74016 INTERCHANGEABLE
Gasket
Parker-Hannifin Corporation Dba Pneutronics Div Pneumatic Division
Cross-Reference Index
Part NumberManufacturer
BACB10D86 PRIMARY The Boeing Company Div Defense (USA)
200330107-1 Air Force United States Department of the Dba Tinker Afb Oc Alc Dsp Div Department of the Air Force (USA)
P-740-16 U.s. Graphite Corporation (USA)
AB-308 Chrysler Corp Amplex Div (USA)
A257-375-16 Asco Sintering Co
Related Parts
5330-00-406-0772INTERCHANGEABLE
GASKET
P74016

Frequently Asked Questions

What is NSN 3120-01-508-5012?

NSN 3120-01-508-5012 is a Bearing,sleeve, manufactured by The Boeing Company Div Defense, classified under FSC 3120 (No Item Name Available). Status: active.

What are the part numbers for NSN 3120-01-508-5012?

NSN 3120-01-508-5012 has 5 cross-referenced part numbers: BACB10D86 (The Boeing Company Div Defense), 200330107-1 (Air Force United States Department of the Dba Tinker Afb Oc Alc Dsp Div Department of the Air Force), P-740-16 (U.s. Graphite Corporation), AB-308 (Chrysler Corp Amplex Div), A257-375-16 (Asco Sintering Co).

What NSN replaces 3120-01-508-5012?

There is 1 known substitute for 3120-01-508-5012: 5330-00-406-0772. Verify interchangeability with system specifications before substitution.

What are the specifications of BACB10D86?

Key specifications for BACB10D86: Material: IRON ALLOY OVERALL; Style Designator: SOLID, PLAIN, NO OUTSIDE FLANGES; Material Document and Classification: MIL-B-5687,TYPE II,COMPOSITION B FED SPEC SINGLE MATERIAL RESPONSE OVERALL; Part Name Assigned by Controlling Agency: BEARING,SLEEVE,PLAIN,IRON-COPPER. 8 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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