PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

40121Bushing,sleeve

Northrop Grumman Systems Corporation Div Marine Systems · NSN 3120-00-661-7807 · FSC 3120 · No Item Name Available
Verified by PartsTable
NSN 3120-00-661-7807 — this item is cataloged by the U.S. Government under National Stock Number 3120-00-661-7807. Primary manufacturer part number: 40121.
Features
  • Bushing,sleeve — FSC 3120
  • Body Inside Diameter: 0.8750 INCHES MINIMUM AND 0.8760 INCHES MAXIMUM IN
  • Material: COPPER ALLOY 910 OVERALL
  • Corner Shape: SQUARE ALL CORNERS
  • Style Designator: SOLID, PLAIN, NO OUTSIDE FLANGES
  • Body Outside Diameter: 1.1260 INCHES MINIMUM AND 1.1265 INCHES MAXIMUM IN
  • 3 verified cross-references
  • Primary manufacturer: Northrop Grumman Systems Corporation Div Marine Systems
Applications
  • Applications requiring Copper Alloy 910 Overall construction
General Description

The Bushing,sleeve, cataloged under National Stock Number 3120-00-661-7807, is classified within Federal Supply Class 3120 (No Item Name Available) of the Bearings group. The primary manufacturer of record is Northrop Grumman Systems Corporation Div Marine Systems. Government technical data includes 5 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 3 manufacturers, 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
NSN3120-00-661-7807
Primary Part Number40121
Item NameBushing,sleeve
FSC / FSG3120 / 31 — No Item Name Available
ManufacturerNorthrop Grumman Systems Corporation Div Marine Systems
StatusACTIVE
Body Inside Diameter0.8750 INCHES MINIMUM AND 0.8760 INCHES MAXIMUM IN
MaterialCOPPER ALLOY 910 OVERALL
Corner ShapeSQUARE ALL CORNERS
Style DesignatorSOLID, PLAIN, NO OUTSIDE FLANGES
Body Outside Diameter1.1260 INCHES MINIMUM AND 1.1265 INCHES MAXIMUM IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
5110-00-156-0124 INTERCHANGEABLE
File,hand
3455-00-194-051510000 INTERCHANGEABLE
Cutter,milling,plain
Niagara Cutter Inc
4510-00-595-092340121 INTERCHANGEABLE
Bulb,flush,water Closet Tank
Danco Inc
5305-00-807-644640121 INTERCHANGEABLE
Screw,wood
Hillman Group, Inc., the
5330-00-998-3230648195 INTERCHANGEABLE
Gasket
Parker-Hannifin Corporation Dba Pneutronics Div Composite Sealing Systems Division
4210-01-080-1457 INTERCHANGEABLE
Coupling,hose,fire Fighting
6685-01-155-3061 INTERCHANGEABLE
Transmitter,temperature,electric
5995-01-309-450840121 INTERCHANGEABLE
Cable Assembly,special Purpose,e
Bell Intl Inc
3040-01-347-283140121 INTERCHANGEABLE
Shaft,shouldered
Control Enterprises Inc Dba C.e.i.
8465-01-565-400240121 INTERCHANGEABLE
Hydration System
Camelbak Products, Llc Dba Camelbak
Cross-Reference Index
Part NumberManufacturer
40121 Westinghouse Electric Corp Sturtevant Div (USA)
40121 PRIMARY Northrop Grumman Systems Corporation Div Marine Systems (USA)
40121 Westinghouse Electric Corp (USA)
Related Parts
5110-00-156-0124INTERCHANGEABLE
FILE,HAND
3455-00-194-0515INTERCHANGEABLE
CUTTER,MILLING,PLAIN
10000
4510-00-595-0923INTERCHANGEABLE
BULB,FLUSH,WATER CLOSET TANK
40121
5305-00-807-6446INTERCHANGEABLE
SCREW,WOOD
40121
5330-00-998-3230INTERCHANGEABLE
GASKET
648195
4210-01-080-1457INTERCHANGEABLE
COUPLING,HOSE,FIRE FIGHTING
6685-01-155-3061INTERCHANGEABLE
TRANSMITTER,TEMPERATURE,ELECTRIC
5995-01-309-4508INTERCHANGEABLE
CABLE ASSEMBLY,SPECIAL PURPOSE,E
40121
3040-01-347-2831INTERCHANGEABLE
SHAFT,SHOULDERED
40121
8465-01-565-4002INTERCHANGEABLE
HYDRATION SYSTEM
40121
5133-01-644-5808INTERCHANGEABLE
DRILL,TWIST
40121
5306-01-660-4300INTERCHANGEABLE
BOLT,MACHINE
4-0121

Frequently Asked Questions

What is NSN 3120-00-661-7807?

NSN 3120-00-661-7807 is a Bushing,sleeve, manufactured by Northrop Grumman Systems Corporation Div Marine Systems, classified under FSC 3120 (No Item Name Available). Status: active.

What are the part numbers for NSN 3120-00-661-7807?

NSN 3120-00-661-7807 has 3 cross-referenced part numbers: 40121 (Westinghouse Electric Corp Sturtevant Div), 40121 (Northrop Grumman Systems Corporation Div Marine Systems), 40121 (Westinghouse Electric Corp).

What NSN replaces 3120-00-661-7807?

There are 12 known substitutes for 3120-00-661-7807: 5110-00-156-0124, 3455-00-194-0515, 4510-00-595-0923 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 40121?

Key specifications for 40121: Body Inside Diameter: 0.8750 INCHES MINIMUM AND 0.8760 INCHES MAXIMUM IN; Material: COPPER ALLOY 910 OVERALL; Corner Shape: SQUARE ALL CORNERS; Style Designator: SOLID, PLAIN, NO OUTSIDE FLANGES. 6 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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