PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

303 605 BE 704 649 016592Valve,safety Relief

Rolls-Royce Marine North America Inc · NSN 4820-01-302-8976 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-01-302-8976 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-302-8976. Primary manufacturer part number: 303 605 BE 704 649 016592.
Features
  • Valve,safety Relief — FSC 4820
  • 8 verified cross-references
  • Primary manufacturer: Rolls-Royce Marine North America Inc
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
General Description

The Valve,safety Relief, cataloged under National Stock Number 4820-01-302-8976, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Rolls-Royce Marine North America Inc. This item has 8 commercial cross-references from 4 manufacturers, enabling identification through both NSN and commercial part number lookups. 1 verified substitute exists in the FLIS interchangeability database. Current acquisition status: Active.

Catalog Facts
Item NameValve,safety Relief
FSC / FSG4820 — No Item Name Available (FSG 48)
ManufacturersRolls-Royce Marine North America Inc (CAGE 1TH76); Ulstein Bergen A/s (CAGE N0379); Dla Land and Maritime Dba Engineering and Technical Support Div Document Standardization Division (vendor Item Drawings) (CAGE 16236); Motor-Services Hugo Stamp, Inc (CAGE 3BXW6)
Technical Specifications
ParameterValue
NSN4820-01-302-8976
Primary Part Number303 605 BE 704 649 016592
Item NameValve,safety Relief
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerRolls-Royce Marine North America Inc
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 1
5895-00-884-625758425 INTERCHANGEABLE
Holder,stylus
Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp Div Multiple
Cross-Reference Index
Part NumberManufacturer
303 605 BE 704 649 016592 Rolls-Royce Marine North America Inc (USA)
058391 Rolls-Royce Marine North America Inc (USA)
L696/27 ITEM-10 Ulstein Bergen A/s (NOR)
58391 Dla Land and Maritime Dba Engineering and Technical Support Div Document Standardization Division (vendor Item Drawings) (USA)
58391 Ulstein Bergen A/s (NOR)
303605 BE Rolls-Royce Marine North America Inc (USA)
B00303605 Motor-Services Hugo Stamp, Inc (USA)
58391 Rolls-Royce Marine North America Inc (USA)
Related Parts
5895-00-884-6257INTERCHANGEABLE
HOLDER,STYLUS
58425

Frequently Asked Questions

What is NSN 4820-01-302-8976?

NSN 4820-01-302-8976 is a Valve,safety Relief, manufactured by Rolls-Royce Marine North America Inc, classified under FSC 4820 (No Item Name Available). Status: active.

What are the part numbers for NSN 4820-01-302-8976?

NSN 4820-01-302-8976 has 8 cross-referenced part numbers: 303 605 BE 704 649 016592 (Rolls-Royce Marine North America Inc), 058391 (Rolls-Royce Marine North America Inc), L696/27 ITEM-10 (Ulstein Bergen A/s), 58391 (Dla Land and Maritime Dba Engineering and Technical Support Div Document Standardization Division (vendor Item Drawings)), 58391 (Ulstein Bergen A/s) and 3 more.

What NSN replaces 4820-01-302-8976?

There is 1 known substitute for 4820-01-302-8976: 5895-00-884-6257. Verify interchangeability with system specifications before substitution.

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