PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

310PRing,wearing

Curtiss-Wright Electro-Mechanical Corporation Div Epd · NSN 4320-00-218-3387 · FSC 4320 · No Item Name Available
Verified by PartsTable
NSN 4320-00-218-3387 — this item is cataloged by the U.S. Government under National Stock Number 4320-00-218-3387. Primary manufacturer part number: 310P.
Features
  • Ring,wearing — FSC 4320
  • Distance Below Centerline: 0.062 INCHES NOMINAL IN
  • Body Outside Diameter: 10.246 INCHES MINIMUM AND 10.248 INCHES MAXIMUM IN
  • Material: COPPER ALLOY
  • Material Document and Classification: MIL-B-16261,GR 3 MIL SPEC SINGLE MATERIAL RESPONSE
  • Right Side Flange Thickness: 0.438 INCHES NOMINAL IN
  • Distance From End: 0.500 INCHES NOMINAL IN
  • Largest External Anchor Flange Radius: 5.344 INCHES NOMINAL IN
Applications
  • Applications requiring Copper Alloy construction
General Description

The Ring,wearing, cataloged under National Stock Number 4320-00-218-3387, 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 12 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 3 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4320-00-218-3387
Primary Part Number310P
Item NameRing,wearing
FSC / FSG4320 / 43 — No Item Name Available
ManufacturerCurtiss-Wright Electro-Mechanical Corporation Div Epd
StatusACTIVE
Distance Below Centerline0.062 INCHES NOMINAL IN
Body Outside Diameter10.246 INCHES MINIMUM AND 10.248 INCHES MAXIMUM IN
MaterialCOPPER ALLOY
Material Document and ClassificationMIL-B-16261,GR 3 MIL SPEC SINGLE MATERIAL RESPONSE
Right Side Flange Thickness0.438 INCHES NOMINAL IN
Distance From End0.500 INCHES NOMINAL IN
Largest External Anchor Flange Radius5.344 INCHES NOMINAL IN
Body Inside Diameter9.750 INCHES NOMINAL IN
Distance Between Flanges2.004 INCHES MINIMUM AND 2.007 INCHES MAXIMUM IN
Left Side Flange Thickness0.375 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 3
4320-00-218-3386309P INTERCHANGEABLE
Ring,wearing
Curtiss-Wright Electro-Mechanical Corporation Div Epd
3110-00-227-3618310SSZ INTERCHANGEABLE
Bearing,ball,annular
Skf Usa Inc.
3110-00-554-3359 INTERCHANGEABLE
Bearing,ball,annular
Cross-Reference Index
Part NumberManufacturer
310P PRIMARY Curtiss-Wright Electro-Mechanical Corporation Div Epd (USA)
SL6780PC72 Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss Wright Engineered Pump Division Use CAGE Code 0ubg9 for Cataloging (USA)
SL7989PC43 Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss Wright Engineered Pump Division Use CAGE Code 0ubg9 for Cataloging (USA)
SL5077PC72 Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss Wright Engineered Pump Division Use CAGE Code 0ubg9 for Cataloging (USA)
310P Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss Wright Engineered Pump Division Use CAGE Code 0ubg9 for Cataloging (USA)
RY96051 Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss Wright Engineered Pump Division Use CAGE Code 0ubg9 for Cataloging (USA)
872147-1 Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss Wright Engineered Pump Division Use CAGE Code 0ubg9 for Cataloging (USA)
SL5560PC72 Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss Wright Engineered Pump Division Use CAGE Code 0ubg9 for Cataloging (USA)
SL5079PC72 Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss Wright Engineered Pump Division Use CAGE Code 0ubg9 for Cataloging (USA)
RY96051 Curtiss-Wright Electro-Mechanical Corporation Div Epd (USA)
SL6782PC72 Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss Wright Engineered Pump Division Use CAGE Code 0ubg9 for Cataloging (USA)
SL5562PC72 Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss Wright Engineered Pump Division Use CAGE Code 0ubg9 for Cataloging (USA)
Related Parts
4320-00-218-3386INTERCHANGEABLE
RING,WEARING
309P
3110-00-227-3618INTERCHANGEABLE
BEARING,BALL,ANNULAR
310SSZ
3110-00-554-3359INTERCHANGEABLE
BEARING,BALL,ANNULAR

Frequently Asked Questions

What is NSN 4320-00-218-3387?

NSN 4320-00-218-3387 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 4320-00-218-3387?

NSN 4320-00-218-3387 has 12 cross-referenced part numbers: 310P (Curtiss-Wright Electro-Mechanical Corporation Div Epd), SL6780PC72 (Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss Wright Engineered Pump Division Use CAGE Code 0ubg9 for Cataloging), SL7989PC43 (Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss Wright Engineered Pump Division Use CAGE Code 0ubg9 for Cataloging), SL5077PC72 (Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss Wright Engineered Pump Division Use CAGE Code 0ubg9 for Cataloging), 310P (Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss Wright Engineered Pump Division Use CAGE Code 0ubg9 for Cataloging) and 7 more.

What NSN replaces 4320-00-218-3387?

There are 3 known substitutes for 4320-00-218-3387: 4320-00-218-3386, 3110-00-227-3618, 3110-00-554-3359. Verify interchangeability with system specifications before substitution.

What are the specifications of 310P?

Key specifications for 310P: Distance Below Centerline: 0.062 INCHES NOMINAL IN; Body Outside Diameter: 10.246 INCHES MINIMUM AND 10.248 INCHES MAXIMUM IN; Material: COPPER ALLOY; Material Document and Classification: MIL-B-16261,GR 3 MIL SPEC SINGLE MATERIAL RESPONSE. 11 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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