PartsTable TECHNICAL DATA SHEET
AUGUST 2026Technical Data Sheet

V2B11686-6LAVent Unit,relief

Vacco Industries · NSN 4930-01-474-8949 · FSC 4930 · No Item Name Available
Verified by PartsTable
NSN 4930-01-474-8949 — this item is cataloged by the U.S. Government under National Stock Number 4930-01-474-8949. Primary manufacturer part number: V2B11686-6LA.
Features
  • Vent Unit,relief — FSC 4930
  • 4 verified cross-references
  • Primary manufacturer: Vacco Industries
Applications
  • Maintenance depot operations
  • Field repair and servicing
  • Vehicle maintenance facilities
General Description

The Vent Unit,relief, cataloged under National Stock Number 4930-01-474-8949, 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 Vacco Industries. This item has 4 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 2 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Catalog Facts
Item NameVent Unit,relief
FSC / FSG4930 — No Item Name Available (FSG 49)
ManufacturersVacco Industries (CAGE 99517); Naval Inventory Control Point Mechanicsburg (CAGE 03950)
Technical Specifications
ParameterValue
NSN4930-01-474-8949
Primary Part NumberV2B11686-6LA
Item NameVent Unit,relief
FSC / FSG4930 / 49 — No Item Name Available
ManufacturerVacco Industries
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 2
4820-01-483-1923V3D10436 ITEM 3 INTERCHANGEABLE
Seat,valve
Vacco Industries
4930-01-633-9527 INTERCHANGEABLE
Vent Unit,relief
Cross-Reference Index
Part NumberManufacturer
V2B11686-6LA PRIMARY Vacco Industries (USA)
V3D10436 ITEM 4 Naval Inventory Control Point Mechanicsburg (USA)
V3D10436 Vacco Industries (USA)
V3D10436 ITEM 4 Vacco Industries (USA)
Related Parts
4820-01-483-1923INTERCHANGEABLE
SEAT,VALVE
V3D10436 ITEM 3
4930-01-633-9527INTERCHANGEABLE
VENT UNIT,RELIEF

Frequently Asked Questions

What is NSN 4930-01-474-8949?

NSN 4930-01-474-8949 is a Vent Unit,relief, manufactured by Vacco Industries, classified under FSC 4930 (No Item Name Available). Status: active.

What are the part numbers for NSN 4930-01-474-8949?

NSN 4930-01-474-8949 has 4 cross-referenced part numbers: V2B11686-6LA (Vacco Industries), V3D10436 ITEM 4 (Naval Inventory Control Point Mechanicsburg), V3D10436 (Vacco Industries), V3D10436 ITEM 4 (Vacco Industries).

What NSN replaces 4930-01-474-8949?

There are 2 known substitutes for 4930-01-474-8949: 4820-01-483-1923, 4930-01-633-9527. Verify interchangeability with system specifications before substitution.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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