PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

51506Bushing,sleeve

Hydro-Aire Aerospace Corp · NSN 3120-00-402-7292 · FSC 3120 · No Item Name Available
Verified by PartsTable
NSN 3120-00-402-7292 — this item is cataloged by the U.S. Government under National Stock Number 3120-00-402-7292. Primary manufacturer part number: 51506.
Features
  • Bushing,sleeve — FSC 3120
  • Body Outside Diameter: 0.3090 INCHES MINIMUM AND 0.3110 INCHES MAXIMUM IN
  • Surface Finish: 125.0 MICROINCHES OUTSIDE DIAMETER SURFACE OF FLANGE
  • Surface Finish: 32.0 MICROINCHES RIGHT END SURFACE OF BODY
  • Surface Finish: 125.0 MICROINCHES OUTSIDE DIAMETER SURFACE OF BODY
  • Style Designator: SOLID, EXTERNAL FLANGE ONE END
  • Hardness Rating: 25.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM OVERALL
  • Surface Finish: 125.0 MICROINCHES LEFT END SURFACE OF BODY AND FLANGE
Applications
  • Applications requiring Steel Comp 416 Overall construction
General Description

The Bushing,sleeve, cataloged under National Stock Number 3120-00-402-7292, is classified within Federal Supply Class 3120 (No Item Name Available) of the Bearings group. The primary manufacturer of record is Hydro-Aire Aerospace Corp. Government technical data includes 15 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 5 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN3120-00-402-7292
Primary Part Number51506
Item NameBushing,sleeve
FSC / FSG3120 / 31 — No Item Name Available
ManufacturerHydro-Aire Aerospace Corp
StatusACTIVE
Body Outside Diameter0.3090 INCHES MINIMUM AND 0.3110 INCHES MAXIMUM IN
Surface Finish125.0 MICROINCHES OUTSIDE DIAMETER SURFACE OF FLANGE
Surface Finish32.0 MICROINCHES RIGHT END SURFACE OF BODY
Surface Finish125.0 MICROINCHES OUTSIDE DIAMETER SURFACE OF BODY
Style DesignatorSOLID, EXTERNAL FLANGE ONE END
Hardness Rating25.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM OVERALL
Surface Finish125.0 MICROINCHES LEFT END SURFACE OF BODY AND FLANGE
Body Inside Diameter0.1880 INCHES MINIMUM AND 0.1910 INCHES MAXIMUM IN
MaterialSTEEL COMP 416 OVERALL
Surface TreatmentPASSIVATE OVERALL
Material Document and ClassificationQQ-S-464 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
Corner ShapeSQUARE ALL CORNERS
Flange Outside Diameter0.3640 INCHES MINIMUM AND 0.3660 INCHES MAXIMUM IN
Surface Finish16.0 MICROINCHES INSIDE DIAMETER SURFACE OF BODY
Flange Width0.0260 INCHES MINIMUM AND 0.0360 INCHES MAXIMUM IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 5
4330-00-136-5066211249 INTERCHANGEABLE
Filter Element,fluid
Mobile Drilling Company Inc Dba Foremost-Mobile
1680-00-522-832051506 INTERCHANGEABLE
Shaft Assy,output
Safran Electronics & Defense, Avionics Usa, Llc Dba Use CAGE Code 879b2 for Cataloging
2805-01-061-526551506 INTERCHANGEABLE
Screen,oil Pump,int
Mcculloch Corp
5315-01-181-0482 INTERCHANGEABLE
Pin
5950-01-408-293836044-03 INTERCHANGEABLE
Transformer,power
Rosco Mfg Co
Cross-Reference Index
Part NumberManufacturer
51506 PRIMARY Hydro-Aire Aerospace Corp (USA)
Related Parts
4330-00-136-5066INTERCHANGEABLE
FILTER ELEMENT,FLUID
211249
1680-00-522-8320INTERCHANGEABLE
SHAFT ASSY,OUTPUT
51506
2805-01-061-5265INTERCHANGEABLE
SCREEN,OIL PUMP,INT
51506
5315-01-181-0482INTERCHANGEABLE
PIN
5950-01-408-2938INTERCHANGEABLE
TRANSFORMER,POWER
36044-03

Frequently Asked Questions

What is NSN 3120-00-402-7292?

NSN 3120-00-402-7292 is a Bushing,sleeve, manufactured by Hydro-Aire Aerospace Corp, classified under FSC 3120 (No Item Name Available). Status: active.

What are the part numbers for NSN 3120-00-402-7292?

NSN 3120-00-402-7292 has 1 cross-referenced part number: 51506 (Hydro-Aire Aerospace Corp).

What NSN replaces 3120-00-402-7292?

There are 5 known substitutes for 3120-00-402-7292: 4330-00-136-5066, 1680-00-522-8320, 2805-01-061-5265 and 2 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 51506?

Key specifications for 51506: Body Outside Diameter: 0.3090 INCHES MINIMUM AND 0.3110 INCHES MAXIMUM IN; Surface Finish: 125.0 MICROINCHES OUTSIDE DIAMETER SURFACE OF FLANGE; Surface Finish: 32.0 MICROINCHES RIGHT END SURFACE OF BODY; Surface Finish: 125.0 MICROINCHES OUTSIDE DIAMETER SURFACE OF BODY. 16 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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