PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

51558Ring,wearing

Curtiss-Wright Electro-Mechanical Corporation Div Epd · NSN 4320-00-132-4648 · FSC 4320 · No Item Name Available
Verified by PartsTable
NSN 4320-00-132-4648 — this item is cataloged by the U.S. Government under National Stock Number 4320-00-132-4648. Primary manufacturer part number: 51558.
Features
  • Ring,wearing — FSC 4320
  • Body Outside Diameter: 5.875 INCHES NOMINAL IN
  • Corner Shape: SQUARE INSIDE RIGHT CORNER
  • Corner Shape: SQUARE INSIDE LEFT CORNER
  • Corner Shape: SQUARE OUTSIDE RIGHT CORNER
  • Material: COPPER ALLOY
  • Chamfer Length: 0.062 INCHES NOMINAL OUTSIDE LEFT CORNER IN
  • Corner Shape: CHAMFERED OUTSIDE LEFT CORNER
Applications
  • Applications requiring Copper Alloy construction
General Description

The Ring,wearing, cataloged under National Stock Number 4320-00-132-4648, is classified within Federal Supply Class 4320 (No Item Name Available) of the Pumps and Compressors group. The primary manufacturer of record is Curtiss-Wright Electro-Mechanical Corporation Div Epd. Government technical data includes 10 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 7 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4320-00-132-4648
Primary Part Number51558
Item NameRing,wearing
FSC / FSG4320 / 43 — No Item Name Available
ManufacturerCurtiss-Wright Electro-Mechanical Corporation Div Epd
StatusACTIVE
Body Outside Diameter5.875 INCHES NOMINAL IN
Corner ShapeSQUARE INSIDE RIGHT CORNER
Corner ShapeSQUARE INSIDE LEFT CORNER
Corner ShapeSQUARE OUTSIDE RIGHT CORNER
MaterialCOPPER ALLOY
Chamfer Length0.062 INCHES NOMINAL OUTSIDE LEFT CORNER IN
Corner ShapeCHAMFERED OUTSIDE LEFT CORNER
Chamfer Angle45.0 DEGREES NOMINAL OUTSIDE LEFT CORNER
Body Inside Diameter5.250 INCHES NOMINAL IN
Body StylePLAIN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 7
3040-00-356-3500SC-C-70650 INTERCHANGEABLE
Detent Plate
Us Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir
1680-00-511-544951558 INTERCHANGEABLE
Adapter,flexible Sh
Safran Electronics & Defense, Avionics Usa, Llc Dba Use CAGE Code 879b2 for Cataloging
5310-00-576-0900NAS620-3L INTERCHANGEABLE
Washer,flat
National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use
4140-01-115-5976 INTERCHANGEABLE
Impeller,fan,axial
5998-01-135-1530 INTERCHANGEABLE
Printed Wiring Board
4240-01-251-3283 INTERCHANGEABLE
Valve,exhalation,respirator
8345-01-590-1729 INTERCHANGEABLE
Flag,us Army Meddac
Cross-Reference Index
Part NumberManufacturer
51558 Curtiss-Wright Electro-Mechanical Corporation Div Epd (USA)
51558-00 Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss Wright Engineered Pump Division Use CAGE Code 0ubg9 for Cataloging (USA)
51558 Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss Wright Engineered Pump Division Use CAGE Code 0ubg9 for Cataloging (USA)
Related Parts
3040-00-356-3500INTERCHANGEABLE
DETENT PLATE
SC-C-70650
1680-00-511-5449INTERCHANGEABLE
ADAPTER,FLEXIBLE SH
51558
5310-00-576-0900INTERCHANGEABLE
WASHER,FLAT
NAS620-3L
4140-01-115-5976INTERCHANGEABLE
IMPELLER,FAN,AXIAL
5998-01-135-1530INTERCHANGEABLE
PRINTED WIRING BOARD
4240-01-251-3283INTERCHANGEABLE
VALVE,EXHALATION,RESPIRATOR
8345-01-590-1729INTERCHANGEABLE
FLAG,US ARMY MEDDAC

Frequently Asked Questions

What is NSN 4320-00-132-4648?

NSN 4320-00-132-4648 is a Ring,wearing, manufactured by Curtiss-Wright Electro-Mechanical Corporation Div Epd, classified under FSC 4320 (No Item Name Available). Status: active.

What are the part numbers for NSN 4320-00-132-4648?

NSN 4320-00-132-4648 has 3 cross-referenced part numbers: 51558 (Curtiss-Wright Electro-Mechanical Corporation Div Epd), 51558-00 (Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss Wright Engineered Pump Division Use CAGE Code 0ubg9 for Cataloging), 51558 (Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss Wright Engineered Pump Division Use CAGE Code 0ubg9 for Cataloging).

What NSN replaces 4320-00-132-4648?

There are 7 known substitutes for 4320-00-132-4648: 3040-00-356-3500, 1680-00-511-5449, 5310-00-576-0900 and 4 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 51558?

Key specifications for 51558: Body Outside Diameter: 5.875 INCHES NOMINAL IN; Corner Shape: SQUARE INSIDE RIGHT CORNER; Corner Shape: SQUARE INSIDE LEFT CORNER; Special Features: WITH TWO THD MTG HOLES 0.250 IN.-20 UNC SPACED 180 DEG APART,FURNISHED W/TWO ALLEN SCREWS IN. 12 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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