PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

256101-3Ring,wearing

Curtiss-Wright Electro-Mechanical Corporation Div Epd · NSN 4320-00-398-8152 · FSC 4320 · No Item Name Available
Verified by PartsTable
NSN 4320-00-398-8152 — this item is cataloged by the U.S. Government under National Stock Number 4320-00-398-8152. Primary manufacturer part number: 256101-3.
Features
  • Ring,wearing — FSC 4320
  • Body Inside Diameter: 5.345 INCHES NOMINAL IN
  • Internal Flange Width: 0.500 INCHES NOMINAL IN
  • Corner Shape: SQUARE INSIDE LEFT CORNER
  • Internal Flange Outside Diameter: 6.015 INCHES NOMINAL IN
  • Corner Radius: 0.625 INCHES NOMINAL INSIDE RIGHT CORNER IN
  • Corner Shape: SQUARE OUTSIDE LEFT CORNER
  • Largest External Anchor Flange Radius: 4.344 INCHES NOMINAL IN
Applications
  • Applications requiring Nickel Alloy construction
General Description

The Ring,wearing, cataloged under National Stock Number 4320-00-398-8152, 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 21 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 7 commercial cross-references from 3 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
NSN4320-00-398-8152
Primary Part Number256101-3
Item NameRing,wearing
FSC / FSG4320 / 43 — No Item Name Available
ManufacturerCurtiss-Wright Electro-Mechanical Corporation Div Epd
StatusACTIVE
Body Inside Diameter5.345 INCHES NOMINAL IN
Internal Flange Width0.500 INCHES NOMINAL IN
Corner ShapeSQUARE INSIDE LEFT CORNER
Internal Flange Outside Diameter6.015 INCHES NOMINAL IN
Corner Radius0.625 INCHES NOMINAL INSIDE RIGHT CORNER IN
Corner ShapeSQUARE OUTSIDE LEFT CORNER
Largest External Anchor Flange Radius4.344 INCHES NOMINAL IN
Distance Between Flanges0.631 INCHES NOMINAL IN
Corner ShapeROUND INSIDE RIGHT CORNER
Body Outside Diameter7.994 INCHES NOMINAL IN
MaterialNICKEL ALLOY
Distance From End0.563 INCHES NOMINAL IN
Corner ShapeROUND OUTSIDE RIGHT CORNER
End to Flange Distance1.063 INCHES NOMINAL IN
Distance Below Centerline0.062 INCHES NOMINAL IN
Corner Radius1.875 INCHES NOMINAL OUTSIDE RIGHT CORNER IN
Body StyleINTERNAL FLANGE W/EXTERNAL LOCKING FLANGE
Internal Flange Lip Width0.875 INCHES NOMINAL IN
Left Side Flange Thickness0.312 INCHES NOMINAL IN
Right Side Flange Thickness0.250 INCHES NOMINAL IN
Internal Flange Inside Diameter4.625 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
3110-00-100-352618590 INTERCHANGEABLE
Cone and Rollers,tapered Roller
The Timken Corporation
5310-00-172-6333 INTERCHANGEABLE
Washer,flat
5945-00-201-4201 INTERCHANGEABLE
Relay,electromagnetic
6615-00-471-368010147 INTERCHANGEABLE
Cap-Bearing
Atlantic Inertial Systems Inc Div Cheshire Division
5950-00-474-578610147 INTERCHANGEABLE
Reactor
Cae Usa Inc.
5136-00-580-7332 INTERCHANGEABLE
Tap,thread Cutting
3010-00-731-140410043712 INTERCHANGEABLE
Gearcase-Motor
Us Army Aviation and Missile Command
5950-00-916-3968 INTERCHANGEABLE
Transformer,power
4320-01-037-791010147 INTERCHANGEABLE
Rod,connecting,pump
Gardner Denver Water Jetting Systems, Inc. Div Engineered Package Group
3040-01-132-1705 INTERCHANGEABLE
Cam,control
Cross-Reference Index
Part NumberManufacturer
10147 Rps-Fl, Inc. Dba Rps Inc (USA)
256101-3 Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss Wright Engineered Pump Division Use CAGE Code 0ubg9 for Cataloging (USA)
9470P Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss Wright Engineered Pump Division Use CAGE Code 0ubg9 for Cataloging (USA)
SL-6101 PC70 Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss Wright Engineered Pump Division Use CAGE Code 0ubg9 for Cataloging (USA)
256101-3 PRIMARY Curtiss-Wright Electro-Mechanical Corporation Div Epd (USA)
9470P Curtiss-Wright Electro-Mechanical Corporation Div Epd (USA)
SL-6101 PC70 Curtiss-Wright Electro-Mechanical Corporation Div Epd (USA)
Related Parts
3110-00-100-3526INTERCHANGEABLE
CONE AND ROLLERS,TAPERED ROLLER
18590
5310-00-172-6333INTERCHANGEABLE
WASHER,FLAT
5945-00-201-4201INTERCHANGEABLE
RELAY,ELECTROMAGNETIC
6615-00-471-3680INTERCHANGEABLE
CAP-BEARING
10147
5950-00-474-5786INTERCHANGEABLE
REACTOR
10147
5136-00-580-7332INTERCHANGEABLE
TAP,THREAD CUTTING
3010-00-731-1404INTERCHANGEABLE
GEARCASE-MOTOR
10043712
5950-00-916-3968INTERCHANGEABLE
TRANSFORMER,POWER
4320-01-037-7910INTERCHANGEABLE
ROD,CONNECTING,PUMP
10147
3040-01-132-1705INTERCHANGEABLE
CAM,CONTROL
5340-01-213-8246INTERCHANGEABLE
PLATE,MENDING
10147
6240-01-470-1761INTERCHANGEABLE
LAMP,METAL HALIDE
10147

Frequently Asked Questions

What is NSN 4320-00-398-8152?

NSN 4320-00-398-8152 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 4320-00-398-8152?

NSN 4320-00-398-8152 has 7 cross-referenced part numbers: 10147 (Rps-Fl, Inc. Dba Rps Inc), 256101-3 (Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss Wright Engineered Pump Division Use CAGE Code 0ubg9 for Cataloging), 9470P (Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss Wright Engineered Pump Division Use CAGE Code 0ubg9 for Cataloging), SL-6101 PC70 (Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss Wright Engineered Pump Division Use CAGE Code 0ubg9 for Cataloging), 256101-3 (Curtiss-Wright Electro-Mechanical Corporation Div Epd) and 2 more.

What NSN replaces 4320-00-398-8152?

There are 12 known substitutes for 4320-00-398-8152: 3110-00-100-3526, 5310-00-172-6333, 5945-00-201-4201 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 256101-3?

Key specifications for 256101-3: Body Inside Diameter: 5.345 INCHES NOMINAL IN; Internal Flange Width: 0.500 INCHES NOMINAL IN; Corner Shape: SQUARE INSIDE LEFT CORNER; Internal Flange Outside Diameter: 6.015 INCHES NOMINAL IN. 22 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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