PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

SL4358PC56Ring,wearing

Curtiss-Wright Electro-Mechanical Corporation Div Epd · NSN 4320-00-398-7994 · FSC 4320 · No Item Name Available
Verified by PartsTable
NSN 4320-00-398-7994 — this item is cataloged by the U.S. Government under National Stock Number 4320-00-398-7994. Primary manufacturer part number: SL4358PC56.
Features
  • Ring,wearing — FSC 4320
  • Material: COPPER ALLOY
  • Body Outside Diameter: 4.375 INCHES NOMINAL IN
  • Body Style: PLAIN
  • Corner Shape: SQUARE ALL CORNERS
  • Body Inside Diameter: 3.875 INCHES NOMINAL IN
  • 12 verified cross-references
  • Primary manufacturer: Curtiss-Wright Electro-Mechanical Corporation Div Epd
Applications
  • Applications requiring Copper Alloy construction
General Description

The Ring,wearing, cataloged under National Stock Number 4320-00-398-7994, 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 5 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 12 commercial cross-references from 4 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
NSN4320-00-398-7994
Primary Part NumberSL4358PC56
Item NameRing,wearing
FSC / FSG4320 / 43 — No Item Name Available
ManufacturerCurtiss-Wright Electro-Mechanical Corporation Div Epd
StatusACTIVE
MaterialCOPPER ALLOY
Body Outside Diameter4.375 INCHES NOMINAL IN
Body StylePLAIN
Corner ShapeSQUARE ALL CORNERS
Body Inside Diameter3.875 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
4440-00-031-5493 INTERCHANGEABLE
Valve,cone Filter
5365-00-213-8371 INTERCHANGEABLE
Spacer,plate
5133-00-228-1367 INTERCHANGEABLE
Drill,twist
4210-00-245-111810082 INTERCHANGEABLE
Extinguisher,fire
Tyco Fire Products Lp
4820-00-482-58091008-2 INTERCHANGEABLE
Sensor Assembly,valve
Tescom Corp Dba Tescom Div Tescom
5950-00-645-3574 INTERCHANGEABLE
Transformer,audio Frequency
5935-00-951-50231373A INTERCHANGEABLE
Adapter,connector
Sv Microwave, Inc. Div Sv Microwave
5895-01-011-678410082 INTERCHANGEABLE
Detector,radio Frequency
Smiths Interconnect Americas, Inc.
5310-01-039-4109 INTERCHANGEABLE
Washer,flat
1377-01-046-77821008-2 INTERCHANGEABLE
Initiator,cartridge Actuated
Rockwell Collins Inc
Cross-Reference Index
Part NumberManufacturer
SL4361PC56 Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss Wright Engineered Pump Division Use CAGE Code 0ubg9 for Cataloging (USA)
SL4358PC56 PRIMARY Curtiss-Wright Electro-Mechanical Corporation Div Epd (USA)
SL4361PC56 PRIMARY Curtiss-Wright Electro-Mechanical Corporation Div Epd (USA)
10082 PRIMARY Rps-Fl, Inc. Dba Rps Inc (USA)
171267D PRIMARY Curtiss-Wright Electro-Mechanical Corporation Div Epd (USA)
SL4358PC56 Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss Wright Engineered Pump Division Use CAGE Code 0ubg9 for Cataloging (USA)
SL4274PC97 Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss Wright Engineered Pump Division Use CAGE Code 0ubg9 for Cataloging (USA)
171267D Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss Wright Engineered Pump Division Use CAGE Code 0ubg9 for Cataloging (USA)
MA3987994 Argus Mfg Corp (USA)
4436P Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss Wright Engineered Pump Division Use CAGE Code 0ubg9 for Cataloging (USA)
SL4274PC97 PRIMARY Curtiss-Wright Electro-Mechanical Corporation Div Epd (USA)
4436P PRIMARY Curtiss-Wright Electro-Mechanical Corporation Div Epd (USA)
Related Parts
4440-00-031-5493INTERCHANGEABLE
VALVE,CONE FILTER
5365-00-213-8371INTERCHANGEABLE
SPACER,PLATE
5133-00-228-1367INTERCHANGEABLE
DRILL,TWIST
4210-00-245-1118INTERCHANGEABLE
EXTINGUISHER,FIRE
10082
4820-00-482-5809INTERCHANGEABLE
SENSOR ASSEMBLY,VALVE
1008-2
5950-00-645-3574INTERCHANGEABLE
TRANSFORMER,AUDIO FREQUENCY
5935-00-951-5023INTERCHANGEABLE
ADAPTER,CONNECTOR
1373A
5895-01-011-6784INTERCHANGEABLE
DETECTOR,RADIO FREQUENCY
10082
5310-01-039-4109INTERCHANGEABLE
WASHER,FLAT
1377-01-046-7782INTERCHANGEABLE
INITIATOR,CARTRIDGE ACTUATED
1008-2
3040-01-121-4728INTERCHANGEABLE
SHAFT
10082
5950-01-208-0662INTERCHANGEABLE
REACTOR
6628-0515

Frequently Asked Questions

What is NSN 4320-00-398-7994?

NSN 4320-00-398-7994 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 4320-00-398-7994?

NSN 4320-00-398-7994 has 12 cross-referenced part numbers: SL4361PC56 (Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss Wright Engineered Pump Division Use CAGE Code 0ubg9 for Cataloging), SL4358PC56 (Curtiss-Wright Electro-Mechanical Corporation Div Epd), SL4361PC56 (Curtiss-Wright Electro-Mechanical Corporation Div Epd), 10082 (Rps-Fl, Inc. Dba Rps Inc), 171267D (Curtiss-Wright Electro-Mechanical Corporation Div Epd) and 7 more.

What NSN replaces 4320-00-398-7994?

There are 12 known substitutes for 4320-00-398-7994: 4440-00-031-5493, 5365-00-213-8371, 5133-00-228-1367 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of SL4358PC56?

Key specifications for SL4358PC56: Material: COPPER ALLOY; Body Outside Diameter: 4.375 INCHES NOMINAL IN; Body Style: PLAIN; Corner Shape: SQUARE ALL CORNERS. 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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