PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

6351Valve,safety Relief

Rosco Mfg Co · NSN 4820-01-368-7505 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-01-368-7505 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-368-7505. Primary manufacturer part number: 6351.
Features
  • Valve,safety Relief — FSC 4820
  • Valve Operation Method: AUTOMATIC
  • Media for Which Designed: FUEL/OIL, HYDROCARBON SINGLE RESPONSE
  • Flow Control Device: DISK
  • 2 verified cross-references
  • Primary manufacturer: Rosco Mfg Co
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
General Description

The Valve,safety Relief, cataloged under National Stock Number 4820-01-368-7505, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Rosco Mfg Co. Government technical data includes 3 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 11 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4820-01-368-7505
Primary Part Number6351
Item NameValve,safety Relief
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerRosco Mfg Co
StatusACTIVE
Valve Operation MethodAUTOMATIC
Media for Which DesignedFUEL/OIL, HYDROCARBON SINGLE RESPONSE
Flow Control DeviceDISK
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 11
4320-00-076-0631CR77047PC74 INTERCHANGEABLE
Needle,valve
Eaton Aerospace, Llc Dba Jackson South
6150-00-132-0489179 INTERCHANGEABLE
Lead,storage Battery
Elliott Machine Works Inc
4730-00-235-4065 INTERCHANGEABLE
Elbow,tube
2990-00-354-650663-51 INTERCHANGEABLE
Sleeve,governor Thrust
Dresser Industries Inc Leroi Div
5950-00-392-6563 INTERCHANGEABLE
Transformer,radio Frequency
5340-00-598-27291127-18 INTERCHANGEABLE
Buckle
Naval Air Warfare Center Aircraft Division Joint Base Jbmdl
5935-01-064-1580 INTERCHANGEABLE
Socket,plug-in Electronic Compon
9540-01-071-9590 INTERCHANGEABLE
Angle,structural
5985-01-330-0242635-1 INTERCHANGEABLE
Waveguide Assembly
Drs Sustainment Systems Inc
2925-01-415-02226351 INTERCHANGEABLE
Magneto,ignition
Unison Industries Llc
Cross-Reference Index
Part NumberManufacturer
0002812 Rosco Mfg Co (USA)
6351 PRIMARY Rosco Mfg Co (USA)
Related Parts
4320-00-076-0631INTERCHANGEABLE
NEEDLE,VALVE
CR77047PC74
6150-00-132-0489INTERCHANGEABLE
LEAD,STORAGE BATTERY
179
4730-00-235-4065INTERCHANGEABLE
ELBOW,TUBE
2990-00-354-6506INTERCHANGEABLE
SLEEVE,GOVERNOR THRUST
63-51
5950-00-392-6563INTERCHANGEABLE
TRANSFORMER,RADIO FREQUENCY
5340-00-598-2729INTERCHANGEABLE
BUCKLE
1127-18
5935-01-064-1580INTERCHANGEABLE
SOCKET,PLUG-IN ELECTRONIC COMPON
9540-01-071-9590INTERCHANGEABLE
ANGLE,STRUCTURAL
5985-01-330-0242INTERCHANGEABLE
WAVEGUIDE ASSEMBLY
635-1
2925-01-415-0222INTERCHANGEABLE
MAGNETO,IGNITION
6351
5310-01-498-1746INTERCHANGEABLE
NUT,EYE
6351

Frequently Asked Questions

What is NSN 4820-01-368-7505?

NSN 4820-01-368-7505 is a Valve,safety Relief, manufactured by Rosco Mfg Co, classified under FSC 4820 (No Item Name Available). Status: active.

What are the part numbers for NSN 4820-01-368-7505?

NSN 4820-01-368-7505 has 2 cross-referenced part numbers: 0002812 (Rosco Mfg Co), 6351 (Rosco Mfg Co).

What NSN replaces 4820-01-368-7505?

There are 11 known substitutes for 4820-01-368-7505: 4320-00-076-0631, 6150-00-132-0489, 4730-00-235-4065 and 8 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 6351?

Key specifications for 6351: Valve Operation Method: AUTOMATIC; Media for Which Designed: FUEL/OIL, HYDROCARBON SINGLE RESPONSE; Flow Control Device: DISK. 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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