PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

2921CPDiaphragm,valve,flat

Naval Inventory Control Point Mechanicsburg · NSN 4820-01-325-1713 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-01-325-1713 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-325-1713. Primary manufacturer part number: 2921CP.
Features
  • Diaphragm,valve,flat — 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 Diaphragm,valve,flat, cataloged under National Stock Number 4820-01-325-1713, 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
NSN4820-01-325-1713
Primary Part Number2921CP
Item NameDiaphragm,valve,flat
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
7530-00-050-2326 INTERCHANGEABLE
Envelope,messenger Service
5985-00-089-8557 INTERCHANGEABLE
Probe,waveguide
6625-00-140-738510548824-4 INTERCHANGEABLE
Voltmeter
Combat Capabilities Development Command (ccdc) Armaments Center Dba Ccdc Div Logistics Research and Engineering Directorate
1650-00-302-42512921 INTERCHANGEABLE
Cylinder,actuating,linear
Goodrich Corporation
5950-00-488-99012921 INTERCHANGEABLE
Transformer,power
General Microwave Corporation Div Kratos Microwave Electronics
5950-00-803-8399 INTERCHANGEABLE
Coil,radio Frequency
5999-00-927-6803SMA569509-6 INTERCHANGEABLE
Heat Sink,electrical-Electronic
Us Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir
5365-01-088-8047 INTERCHANGEABLE
Shim
6515-01-185-78362921 INTERCHANGEABLE
Holder,leg
Dyonics Inc Sub of William H Rorer Inc
5985-01-214-0863ATT-0292-01-SMA-02 INTERCHANGEABLE
Attenuator,fixed
Cinch Connectivity Solutions Inc
Cross-Reference Index
Part NumberManufacturer
2921CP Naval Inventory Control Point Mechanicsburg (USA)
2921 Herman Goldner Co, Inc. (USA)
Related Parts
7530-00-050-2326INTERCHANGEABLE
ENVELOPE,MESSENGER SERVICE
5985-00-089-8557INTERCHANGEABLE
PROBE,WAVEGUIDE
6625-00-140-7385INTERCHANGEABLE
VOLTMETER
10548824-4
1650-00-302-4251INTERCHANGEABLE
CYLINDER,ACTUATING,LINEAR
2921
5950-00-488-9901INTERCHANGEABLE
TRANSFORMER,POWER
2921
5950-00-803-8399INTERCHANGEABLE
COIL,RADIO FREQUENCY
5999-00-927-6803INTERCHANGEABLE
HEAT SINK,ELECTRICAL-ELECTRONIC
SMA569509-6
5365-01-088-8047INTERCHANGEABLE
SHIM
6515-01-185-7836INTERCHANGEABLE
HOLDER,LEG
2921
5985-01-214-0863INTERCHANGEABLE
ATTENUATOR,FIXED
ATT-0292-01-SMA-02
6515-01-277-9405INTERCHANGEABLE
WIRE,BONE
292.10
2940-01-327-0199INTERCHANGEABLE
FILTER ELEMENT,INTAKE AIR CLEANE
42921

Frequently Asked Questions

What is NSN 4820-01-325-1713?

NSN 4820-01-325-1713 is a Diaphragm,valve,flat, manufactured by Naval Inventory Control Point Mechanicsburg, classified under FSC 4820 (No Item Name Available). Status: active.

What are the part numbers for NSN 4820-01-325-1713?

NSN 4820-01-325-1713 has 2 cross-referenced part numbers: 2921CP (Naval Inventory Control Point Mechanicsburg), 2921 (Herman Goldner Co, Inc.).

What NSN replaces 4820-01-325-1713?

There are 12 known substitutes for 4820-01-325-1713: 7530-00-050-2326, 5985-00-089-8557, 6625-00-140-7385 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 2921CP?

Key specifications for 2921CP: Special Features: 1IN IN; Criticality Code Justification: ZZZY; 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.
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