PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

3641CPDisk,valve

Naval Inventory Control Point Mechanicsburg · NSN 4820-01-326-8994 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-01-326-8994 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-326-8994. Primary manufacturer part number: 3641CP.
Features
  • Disk,valve — FSC 4820
  • Criticality Code Justification: ZZZY
  • Reference Number Differentiating Characteristics: CLEANING, PACKAGING, AND MARKING IAW THE LATEST REVISION OF MIL-STD-1330
  • 2 verified cross-references
  • Primary manufacturer: Naval Inventory Control Point Mechanicsburg
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
General Description

The Disk,valve, cataloged under National Stock Number 4820-01-326-8994, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Naval Inventory Control Point Mechanicsburg. Government technical data includes 2 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 2 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
NSN4820-01-326-8994
Primary Part Number3641CP
Item NameDisk,valve
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerNaval Inventory Control Point Mechanicsburg
StatusACTIVE
Criticality Code JustificationZZZY
Reference Number Differentiating CharacteristicsCLEANING, PACKAGING, AND MARKING IAW THE LATEST REVISION OF MIL-STD-1330
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
5120-00-056-39425120-00-056-3942 INTERCHANGEABLE
Blade,nutdriver
General Services Administration Federal Supply Service
5965-00-222-7394 INTERCHANGEABLE
Loudspeaker,permanent Magnet
2520-00-350-29393641 INTERCHANGEABLE
Transmission,mechanical,vehicula
Dana Corp Spicer Transmission Div
6930-00-480-25753641 INTERCHANGEABLE
Brush Slip Ring
Curtiss-Wright Controls, Inc. Dba Curtiss Wright Div Actuation Division
6940-00-487-08783641-K467 INTERCHANGEABLE
Amplifier Assembly,training Set
Scientific Atlanta Inc
6220-00-592-0268 INTERCHANGEABLE
Stop Light-Taillight,vehicular
3110-00-902-3775 INTERCHANGEABLE
Bearing,roller,needle
5315-00-982-19143641 INTERCHANGEABLE
Pin,toggle
Weber-Knapp Company Dba Weber-Knapp
4510-01-193-78983-782 INTERCHANGEABLE
Water Closet
Cr/pl Llc
7520-01-201-7791364-1 INTERCHANGEABLE
Marker,tube Type
Visual Systems Co Inc
Cross-Reference Index
Part NumberManufacturer
3641CP Naval Inventory Control Point Mechanicsburg (USA)
3641 Curtiss-Wright Flow Control Corporation Dba Farris Engineering Div Curtiss-Wright Valves Division- Farris (USA)
Related Parts
5120-00-056-3942INTERCHANGEABLE
BLADE,NUTDRIVER
5120-00-056-3942
5965-00-222-7394INTERCHANGEABLE
LOUDSPEAKER,PERMANENT MAGNET
2520-00-350-2939INTERCHANGEABLE
TRANSMISSION,MECHANICAL,VEHICULA
3641
6930-00-480-2575INTERCHANGEABLE
BRUSH SLIP RING
3641
6940-00-487-0878INTERCHANGEABLE
AMPLIFIER ASSEMBLY,TRAINING SET
3641-K467
6220-00-592-0268INTERCHANGEABLE
STOP LIGHT-TAILLIGHT,VEHICULAR
3110-00-902-3775INTERCHANGEABLE
BEARING,ROLLER,NEEDLE
5315-00-982-1914INTERCHANGEABLE
PIN,TOGGLE
3641
4510-01-193-7898INTERCHANGEABLE
WATER CLOSET
3-782
7520-01-201-7791INTERCHANGEABLE
MARKER,TUBE TYPE
364-1
5910-01-255-0577INTERCHANGEABLE
CAPACITOR,FIXED,CERAMIC DIELECTR
5950-01-394-1565INTERCHANGEABLE
TRANSFORMER,POWER
A3110592-001

Frequently Asked Questions

What is NSN 4820-01-326-8994?

NSN 4820-01-326-8994 is a Disk,valve, manufactured by Naval Inventory Control Point Mechanicsburg, classified under FSC 4820 (No Item Name Available). Status: active.

What are the part numbers for NSN 4820-01-326-8994?

NSN 4820-01-326-8994 has 2 cross-referenced part numbers: 3641CP (Naval Inventory Control Point Mechanicsburg), 3641 (Curtiss-Wright Flow Control Corporation Dba Farris Engineering Div Curtiss-Wright Valves Division- Farris).

What NSN replaces 4820-01-326-8994?

There are 12 known substitutes for 4820-01-326-8994: 5120-00-056-3942, 5965-00-222-7394, 2520-00-350-2939 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 3641CP?

Key specifications for 3641CP: Criticality Code Justification: ZZZY; End Item Identification: RELIEF VALVE; Reference Number Differentiating Characteristics: CLEANING, PACKAGING, AND MARKING IAW THE LATEST REVISION OF MIL-STD-1330. 3 total characteristics are documented in the Federal Logistics Information System.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com