PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

SP1Bushing,sleeve

Circor Naval Solutions Llc Dba Warren Pumps · NSN 3120-00-516-0278 · FSC 3120 · No Item Name Available
Verified by PartsTable
NSN 3120-00-516-0278 — this item is cataloged by the U.S. Government under National Stock Number 3120-00-516-0278. Primary manufacturer part number: SP1.
Features
  • Bushing,sleeve — FSC 3120
  • Body Outside Diameter: 0.7510 INCHES MINIMUM AND 0.7520 INCHES MAXIMUM IN
  • Material: COPPER ALLOY OVERALL
  • Corner Shape: SQUARE LEFT FLANGE OUTSIDE RIGHT CORNER
  • Material Document and Classification: MIL-B-16261 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
  • Surface Finish: 63.0 MICROINCHES INTERMEDIATE LAYER
  • Style Designator: SOLID, EXTERNAL FLANGE ONE END
  • Corner Shape: SQUARE INSIDE LEFT CORNER
Applications
  • Applications requiring Copper Alloy Overall construction
General Description

The Bushing,sleeve, cataloged under National Stock Number 3120-00-516-0278, is classified within Federal Supply Class 3120 (No Item Name Available) of the Bearings group. The primary manufacturer of record is Circor Naval Solutions Llc Dba Warren Pumps. Government technical data includes 14 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
NSN3120-00-516-0278
Primary Part NumberSP1
Item NameBushing,sleeve
FSC / FSG3120 / 31 — No Item Name Available
ManufacturerCircor Naval Solutions Llc Dba Warren Pumps
StatusACTIVE
Body Outside Diameter0.7510 INCHES MINIMUM AND 0.7520 INCHES MAXIMUM IN
MaterialCOPPER ALLOY OVERALL
Corner ShapeSQUARE LEFT FLANGE OUTSIDE RIGHT CORNER
Material Document and ClassificationMIL-B-16261 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
Surface Finish63.0 MICROINCHES INTERMEDIATE LAYER
Style DesignatorSOLID, EXTERNAL FLANGE ONE END
Corner ShapeSQUARE INSIDE LEFT CORNER
Corner ShapeSQUARE OUTSIDE RIGHT CORNER
Corner ShapeSQUARE LEFT FLANGE BODY CORNER
Corner ShapeSQUARE OUTSIDE LEFT CORNER
Corner ShapeSQUARE INSIDE RIGHT CORNER
Body Inside Diameter0.5311 INCHES MINIMUM AND 0.5312 INCHES MAXIMUM IN
Flange Width0.1250 INCHES MINIMUM AND 0.1260 INCHES MAXIMUM IN
Flange Outside Diameter0.9680 INCHES MINIMUM AND 0.9690 INCHES MAXIMUM IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
4810-00-139-4361S1091U INTERCHANGEABLE
Seat,valve
Radiator Specialty Company
4210-00-391-5678SP1-30 INTERCHANGEABLE
Proportioner,suction
National Foam Inc Dba National Foam Div National Foam
5930-00-583-8633 INTERCHANGEABLE
Switch,toggle
5360-00-924-5736 INTERCHANGEABLE
Spring,helical,extension
5360-01-116-1077SP-1 INTERCHANGEABLE
Spring
Unicorp.
5365-01-150-9536 INTERCHANGEABLE
Spacer,sleeve
6625-01-192-5510SP-1 INTERCHANGEABLE
Probe,test
Dynascan Corp
4820-01-392-3898SP-1 INTERCHANGEABLE
Seat,valve
E I Dupont De Nemours Co Inc Safety and Environmental Services
4820-01-463-1564 INTERCHANGEABLE
Valve,ball
4820-01-463-1575 INTERCHANGEABLE
Valve,ball
Cross-Reference Index
Part NumberManufacturer
SP1 PRIMARY Circor Naval Solutions Llc Dba Warren Pumps (USA)
Related Parts
4810-00-139-4361INTERCHANGEABLE
SEAT,VALVE
S1091U
4210-00-391-5678INTERCHANGEABLE
PROPORTIONER,SUCTION
SP1-30
5930-00-583-8633INTERCHANGEABLE
SWITCH,TOGGLE
5360-00-924-5736INTERCHANGEABLE
SPRING,HELICAL,EXTENSION
5360-01-116-1077INTERCHANGEABLE
SPRING
SP-1
5365-01-150-9536INTERCHANGEABLE
SPACER,SLEEVE
6625-01-192-5510INTERCHANGEABLE
PROBE,TEST
SP-1
4820-01-392-3898INTERCHANGEABLE
SEAT,VALVE
SP-1
4820-01-463-1564INTERCHANGEABLE
VALVE,BALL
4820-01-463-1575INTERCHANGEABLE
VALVE,BALL
4820-01-463-1579INTERCHANGEABLE
VALVE,BALL
5998-01-521-4314INTERCHANGEABLE
RETAINER-EJECTOR,ELECTRICAL CARD
SP-1

Frequently Asked Questions

What is NSN 3120-00-516-0278?

NSN 3120-00-516-0278 is a Bushing,sleeve, manufactured by Circor Naval Solutions Llc Dba Warren Pumps, classified under FSC 3120 (No Item Name Available). Status: active.

What are the part numbers for NSN 3120-00-516-0278?

NSN 3120-00-516-0278 has 1 cross-referenced part number: SP1 (Circor Naval Solutions Llc Dba Warren Pumps).

What NSN replaces 3120-00-516-0278?

There are 12 known substitutes for 3120-00-516-0278: 4810-00-139-4361, 4210-00-391-5678, 5930-00-583-8633 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of SP1?

Key specifications for SP1: Body Outside Diameter: 0.7510 INCHES MINIMUM AND 0.7520 INCHES MAXIMUM IN; Material: COPPER ALLOY OVERALL; Corner Shape: SQUARE LEFT FLANGE OUTSIDE RIGHT CORNER; Material Document and Classification: MIL-B-16261 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL. 15 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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