PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

11581Bushing,sleeve

Fwd Seagrave Holdings Lp · NSN 3120-00-378-0831 · FSC 3120 · No Item Name Available
Verified by PartsTable
NSN 3120-00-378-0831 — this item is cataloged by the U.S. Government under National Stock Number 3120-00-378-0831. Primary manufacturer part number: 11581.
Features
  • Bushing,sleeve — FSC 3120
  • Style Designator: SOLID, PLAIN, NO OUTSIDE FLANGES
  • Corner Shape: SQUARE ALL CORNERS
  • Material: COPPER ALLOY OVERALL
  • Body Outside Diameter: 1.1250 INCHES MINIMUM AND 1.1260 INCHES MAXIMUM IN
  • Body Inside Diameter: 0.8740 INCHES MINIMUM AND 0.8760 INCHES MAXIMUM IN
  • 1 verified cross-reference
  • Primary manufacturer: Fwd Seagrave Holdings Lp
Applications
  • Applications requiring Copper Alloy Overall construction
General Description

The Bushing,sleeve, cataloged under National Stock Number 3120-00-378-0831, is classified within Federal Supply Class 3120 (No Item Name Available) of the Bearings group. The primary manufacturer of record is Fwd Seagrave Holdings Lp. Government technical data includes 5 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. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN3120-00-378-0831
Primary Part Number11581
Item NameBushing,sleeve
FSC / FSG3120 / 31 — No Item Name Available
ManufacturerFwd Seagrave Holdings Lp
StatusACTIVE
Style DesignatorSOLID, PLAIN, NO OUTSIDE FLANGES
Corner ShapeSQUARE ALL CORNERS
MaterialCOPPER ALLOY OVERALL
Body Outside Diameter1.1250 INCHES MINIMUM AND 1.1260 INCHES MAXIMUM IN
Body Inside Diameter0.8740 INCHES MINIMUM AND 0.8760 INCHES MAXIMUM IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
5310-00-262-300011382A INTERCHANGEABLE
Washer,flat
Brinkley Technology Group Llc Dba Hercules Manufacturing
5330-00-532-3546 INTERCHANGEABLE
Gasket
5950-00-532-6984 INTERCHANGEABLE
Coil,radio Frequency
5950-00-556-1507919455-500 INTERCHANGEABLE
Coil,radio Frequency
Raytheon Company Dba Raytheon
3040-00-594-4142SM-B-171485 INTERCHANGEABLE
Lever,manual Control
Us Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir
5825-00-595-554811581 INTERCHANGEABLE
Synchro Conversion Module
Data Device Corp Dba Beta Transformer Technology
5315-00-768-023011581 INTERCHANGEABLE
Pin,straight,headed
Terex Reedrill Dba Reedrill Texoma Div Terex Mining
4210-00-928-259011581 INTERCHANGEABLE
Hose Assembly,nonmetallic,fire F
Tyco Fire Products Lp
3020-01-025-3129 INTERCHANGEABLE
Gear,antibacklash,spur
5325-01-177-8302 INTERCHANGEABLE
Ring,retaining
Cross-Reference Index
Part NumberManufacturer
11581 PRIMARY Fwd Seagrave Holdings Lp (USA)
Related Parts
5310-00-262-3000INTERCHANGEABLE
WASHER,FLAT
11382A
5330-00-532-3546INTERCHANGEABLE
GASKET
5950-00-532-6984INTERCHANGEABLE
COIL,RADIO FREQUENCY
5950-00-556-1507INTERCHANGEABLE
COIL,RADIO FREQUENCY
919455-500
3040-00-594-4142INTERCHANGEABLE
LEVER,MANUAL CONTROL
SM-B-171485
5825-00-595-5548INTERCHANGEABLE
SYNCHRO CONVERSION MODULE
11581
5315-00-768-0230INTERCHANGEABLE
PIN,STRAIGHT,HEADED
11581
4210-00-928-2590INTERCHANGEABLE
HOSE ASSEMBLY,NONMETALLIC,FIRE F
11581
3020-01-025-3129INTERCHANGEABLE
GEAR,ANTIBACKLASH,SPUR
5325-01-177-8302INTERCHANGEABLE
RING,RETAINING
5305-01-273-4953INTERCHANGEABLE
SCREW,CAP,SOCKET HEAD
11581
5330-01-519-4160INTERCHANGEABLE
PARTS KIT,SEAL REPLACEMENT,MECHA
1158-1

Frequently Asked Questions

What is NSN 3120-00-378-0831?

NSN 3120-00-378-0831 is a Bushing,sleeve, manufactured by Fwd Seagrave Holdings Lp, classified under FSC 3120 (No Item Name Available). Status: active.

What are the part numbers for NSN 3120-00-378-0831?

NSN 3120-00-378-0831 has 1 cross-referenced part number: 11581 (Fwd Seagrave Holdings Lp).

What NSN replaces 3120-00-378-0831?

There are 12 known substitutes for 3120-00-378-0831: 5310-00-262-3000, 5330-00-532-3546, 5950-00-532-6984 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 11581?

Key specifications for 11581: Overall Length: 2.4690 INCHES NOMINAL IN; Style Designator: SOLID, PLAIN, NO OUTSIDE FLANGES; Corner Shape: SQUARE ALL CORNERS; Material: COPPER ALLOY OVERALL. 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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