PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

321AVent Unit,relief

Pryco Inc · NSN 4930-01-532-5226 · FSC 4930 · No Item Name Available
Verified by PartsTable
NSN 4930-01-532-5226 — this item is cataloged by the U.S. Government under National Stock Number 4930-01-532-5226. Primary manufacturer part number: 321A.
Features
  • Vent Unit,relief — FSC 4930
  • Overall Diameter: 2.000 INCHES NOMINAL IN
  • Color: BLACK
  • 1 verified cross-reference
  • Primary manufacturer: Pryco Inc
Applications
  • Maintenance depot operations
  • Field repair and servicing
  • Vehicle maintenance facilities
General Description

The Vent Unit,relief, cataloged under National Stock Number 4930-01-532-5226, is classified within Federal Supply Class 4930 (No Item Name Available) of the Maintenance and Repair Shop Equipment group. The primary manufacturer of record is Pryco Inc. Government technical data includes 2 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 7 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4930-01-532-5226
Primary Part Number321A
Item NameVent Unit,relief
FSC / FSG4930 / 49 — No Item Name Available
ManufacturerPryco Inc
StatusACTIVE
Overall Diameter2.000 INCHES NOMINAL IN
ColorBLACK
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 7
6720-00-069-5351321A INTERCHANGEABLE
Camera,still Picture
Bae Systems Information and Electronic Systems Integration Inc.
5342-00-200-41148177310 INTERCHANGEABLE
Mount,resilient,weapon System
Us Army Aviation and Missile Command
6240-00-271-5991321A INTERCHANGEABLE
Lamp,incandescent
General Electric Company
4820-00-469-66153712M2Y INTERCHANGEABLE
Valve,globe
Circor Instrumentation Technologies, Inc. Dba Hoke Gyrolok
6625-00-852-0179321A INTERCHANGEABLE
Oscilloscope
Tektronix, Inc.
6625-01-048-4112321A INTERCHANGEABLE
Voltmeter
North Atlantic Industries, Inc. Dba North Atlantic Industries
4940-01-064-5057321A INTERCHANGEABLE
Tester,hydraulic Hose Assembly
Avitest Llc
Cross-Reference Index
Part NumberManufacturer
321A Pryco Inc (USA)
Related Parts
6720-00-069-5351INTERCHANGEABLE
CAMERA,STILL PICTURE
321A
5342-00-200-4114INTERCHANGEABLE
MOUNT,RESILIENT,WEAPON SYSTEM
8177310
6240-00-271-5991INTERCHANGEABLE
LAMP,INCANDESCENT
321A
4820-00-469-6615INTERCHANGEABLE
VALVE,GLOBE
3712M2Y
6625-00-852-0179INTERCHANGEABLE
OSCILLOSCOPE
321A
6625-01-048-4112INTERCHANGEABLE
VOLTMETER
321A
4940-01-064-5057INTERCHANGEABLE
TESTER,HYDRAULIC HOSE ASSEMBLY
321A

Frequently Asked Questions

What is NSN 4930-01-532-5226?

NSN 4930-01-532-5226 is a Vent Unit,relief, manufactured by Pryco Inc, classified under FSC 4930 (No Item Name Available). Status: active.

What are the part numbers for NSN 4930-01-532-5226?

NSN 4930-01-532-5226 has 1 cross-referenced part number: 321A (Pryco Inc).

What NSN replaces 4930-01-532-5226?

There are 7 known substitutes for 4930-01-532-5226: 6720-00-069-5351, 5342-00-200-4114, 6240-00-271-5991 and 4 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 321A?

Key specifications for 321A: Overall Diameter: 2.000 INCHES NOMINAL IN; End Item Identification: CREW SHELTER (INLS) KDF208680-M; Special Features: VENT CAP, PRESSURE RELIEF, 2 INCH NPT; SPRING LOADED EMERGENCY VENT OPTION 321; UNITS ARE FACTORY CALIBRATED TO OPEN AT 8 OZ OF INTERNAL TANK PRESSURE. OZ; Part Name Assigned by Controlling Agency: VENT RELIEF, 2 INCH IN. 5 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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