PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

13974-PRing,wearing

Curtiss-Wright Electro-Mechanical Corporation Div Epd · NSN 4320-00-218-3886 · FSC 4320 · No Item Name Available
Verified by PartsTable
NSN 4320-00-218-3886 — this item is cataloged by the U.S. Government under National Stock Number 4320-00-218-3886. Primary manufacturer part number: 13974-P.
Features
  • Ring,wearing — FSC 4320
  • Bolt Hole Quantity: 3
  • Unthreaded Mounting Hole Diameter: 0.281 INCHES NOMINAL IN
  • Corner Shape: SQUARE ALL CORNERS
  • Material: COPPER ALLOY
  • Material Document and Classification: MIL-B-16261,GR 3 MIL SPEC SINGLE MATERIAL RESPONSE
  • Body Style: PLAIN
  • Body Outside Diameter: 3.372 INCHES MINIMUM AND 3.373 INCHES MAXIMUM IN
Applications
  • Applications requiring Copper Alloy construction
General Description

The Ring,wearing, cataloged under National Stock Number 4320-00-218-3886, 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 9 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 6 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
NSN4320-00-218-3886
Primary Part Number13974-P
Item NameRing,wearing
FSC / FSG4320 / 43 — No Item Name Available
ManufacturerCurtiss-Wright Electro-Mechanical Corporation Div Epd
StatusACTIVE
Bolt Hole Quantity3
Unthreaded Mounting Hole Diameter0.281 INCHES NOMINAL IN
Corner ShapeSQUARE ALL CORNERS
MaterialCOPPER ALLOY
Material Document and ClassificationMIL-B-16261,GR 3 MIL SPEC SINGLE MATERIAL RESPONSE
Body StylePLAIN
Body Outside Diameter3.372 INCHES MINIMUM AND 3.373 INCHES MAXIMUM IN
Body Inside Diameter2.000 INCHES NOMINAL IN
Bolt Circle Diameter2.750 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
3110-00-156-4719 INTERCHANGEABLE
Bearing,ball,annular
5133-00-228-1376 INTERCHANGEABLE
Drill,twist
5845-00-407-12811009-1 INTERCHANGEABLE
Strap,transducer
L3harris Technologies, Inc. Div Space and Airborne Systems
5961-00-465-47637901009-00 INTERCHANGEABLE
Semiconductor Device,diode
Lockheed Martin Corp Dba Lockheed Martin Div Mst - Eagan
5960-00-470-507910091 INTERCHANGEABLE
Electron Tube
Jetronic Industries, Inc. Dba Jetronic Industries, Inc. Div Contracts
5305-00-471-9312 INTERCHANGEABLE
Screw Cap
3110-00-554-5968 INTERCHANGEABLE
Bearing,ball,annular
5999-00-925-652112310302 INTERCHANGEABLE
Mounting Pad,electrical-Electron
U S Army Tank Automotive Command Amsta-Im-Mm
5950-01-100-7075SM-D-449021 INTERCHANGEABLE
Coil,radio Frequency
Us Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir
5331-01-213-521110091 INTERCHANGEABLE
O-Ring
Texas Hydraulics, Inc.
Cross-Reference Index
Part NumberManufacturer
13974-P Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss Wright Engineered Pump Division Use CAGE Code 0ubg9 for Cataloging (USA)
SL8186PC37 Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss Wright Engineered Pump Division Use CAGE Code 0ubg9 for Cataloging (USA)
SK-142111 Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss Wright Engineered Pump Division Use CAGE Code 0ubg9 for Cataloging (USA)
SL8186PC37 Curtiss-Wright Electro-Mechanical Corporation Div Epd (USA)
13974-P PRIMARY Curtiss-Wright Electro-Mechanical Corporation Div Epd (USA)
10091 PRIMARY Rps-Fl, Inc. Dba Rps Inc (USA)
Related Parts
3110-00-156-4719INTERCHANGEABLE
BEARING,BALL,ANNULAR
5133-00-228-1376INTERCHANGEABLE
DRILL,TWIST
5845-00-407-1281INTERCHANGEABLE
STRAP,TRANSDUCER
1009-1
5961-00-465-4763INTERCHANGEABLE
SEMICONDUCTOR DEVICE,DIODE
7901009-00
5960-00-470-5079INTERCHANGEABLE
ELECTRON TUBE
10091
5305-00-471-9312INTERCHANGEABLE
SCREW CAP
3110-00-554-5968INTERCHANGEABLE
BEARING,BALL,ANNULAR
5999-00-925-6521INTERCHANGEABLE
MOUNTING PAD,ELECTRICAL-ELECTRON
12310302
5950-01-100-7075INTERCHANGEABLE
COIL,RADIO FREQUENCY
SM-D-449021
5331-01-213-5211INTERCHANGEABLE
O-RING
10091
4820-01-220-2588INTERCHANGEABLE
VALVE,Y
5355-01-220-9525INTERCHANGEABLE
KNOB,SELECTOR VALVE
8227070-03

Frequently Asked Questions

What is NSN 4320-00-218-3886?

NSN 4320-00-218-3886 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 4320-00-218-3886?

NSN 4320-00-218-3886 has 6 cross-referenced part numbers: 13974-P (Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss Wright Engineered Pump Division Use CAGE Code 0ubg9 for Cataloging), SL8186PC37 (Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss Wright Engineered Pump Division Use CAGE Code 0ubg9 for Cataloging), SK-142111 (Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss Wright Engineered Pump Division Use CAGE Code 0ubg9 for Cataloging), SL8186PC37 (Curtiss-Wright Electro-Mechanical Corporation Div Epd), 13974-P (Curtiss-Wright Electro-Mechanical Corporation Div Epd) and 1 more.

What NSN replaces 4320-00-218-3886?

There are 12 known substitutes for 4320-00-218-3886: 3110-00-156-4719, 5133-00-228-1376, 5845-00-407-1281 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 13974-P?

Key specifications for 13974-P: Overall Length: 0.438 INCHES NOMINAL IN; Bolt Hole Quantity: 3; Unthreaded Mounting Hole Diameter: 0.281 INCHES NOMINAL IN; Corner Shape: SQUARE ALL CORNERS. 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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