PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

8721Valve,safety Relief

Anderson Greenwood Lp Dba Anderson Greenwood Crosby · NSN 4820-00-238-6473 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-00-238-6473 — this item is cataloged by the U.S. Government under National Stock Number 4820-00-238-6473. Primary manufacturer part number: 8721.
Features
  • Valve,safety Relief — FSC 4820
  • Criticality Code Justification: ZZZY
  • Reference Number Differentiating Characteristics: MATERIAL WILL BE IN ACCORDANCE WITH NAVICP MECH; ACTIVITY HX QUALITY CONTROL, MANUFACTURING AND TESTING SPECIFICATIONS.
  • 2 verified cross-references
  • Primary manufacturer: Anderson Greenwood Lp Dba Anderson Greenwood Crosby
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
General Description

The Valve,safety Relief, cataloged under National Stock Number 4820-00-238-6473, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Anderson Greenwood Lp Dba Anderson Greenwood Crosby. Government technical data includes 2 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. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4820-00-238-6473
Primary Part Number8721
Item NameValve,safety Relief
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerAnderson Greenwood Lp Dba Anderson Greenwood Crosby
StatusACTIVE
Criticality Code JustificationZZZY
Reference Number Differentiating CharacteristicsMATERIAL WILL BE IN ACCORDANCE WITH NAVICP MECH; ACTIVITY HX QUALITY CONTROL, MANUFACTURING AND TESTING SPECIFICATIONS.
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
3110-00-151-95608721 INTERCHANGEABLE
Bearing,roller,tapered
Eaton Corporation Dba Airflex Div Div Airflex
5935-00-259-44158721 INTERCHANGEABLE
Connector,receptacle,electrical
Western Union Telegraph Co Sub of Western Union Corp
4730-00-326-2443 INTERCHANGEABLE
Restrictor Unit,fluid Flow
5360-00-446-8827D15-792JPC607 INTERCHANGEABLE
Spring,helical,compression
Northrop Grumman Systems Corporation Div Marine Systems
5305-00-738-07168721 INTERCHANGEABLE
Screw,shoulder
Circor Aerospace, Inc. Div Circor
5975-00-925-9314 INTERCHANGEABLE
Box Connector,electrical
5895-01-101-62988721 INTERCHANGEABLE
Divider,power,radio Frequency
Marc Alan Group the, Inc
5360-01-111-791175-LM INTERCHANGEABLE
Spring,helical,compression
Anderson Greenwood Lp Dba Anderson Greenwood Crosby
5930-01-114-70598721 INTERCHANGEABLE
Switch,rotary
Electro Impulse Laboratory Inc Dba Electro Impulse Inc
5120-01-128-30567907108-00 INTERCHANGEABLE
Alignment Tool,electronic Equipm
Lockheed Martin Corp Dba Lockheed Martin Div Mst - Eagan
Cross-Reference Index
Part NumberManufacturer
8721 Anderson Greenwood Lp Dba Anderson Greenwood Crosby (USA)
E87230GM51M Anderson Greenwood Lp Dba Anderson Greenwood Crosby (USA)
Related Parts
3110-00-151-9560INTERCHANGEABLE
BEARING,ROLLER,TAPERED
8721
5935-00-259-4415INTERCHANGEABLE
CONNECTOR,RECEPTACLE,ELECTRICAL
8721
4730-00-326-2443INTERCHANGEABLE
RESTRICTOR UNIT,FLUID FLOW
5360-00-446-8827INTERCHANGEABLE
SPRING,HELICAL,COMPRESSION
D15-792JPC607
5305-00-738-0716INTERCHANGEABLE
SCREW,SHOULDER
8721
5975-00-925-9314INTERCHANGEABLE
BOX CONNECTOR,ELECTRICAL
5895-01-101-6298INTERCHANGEABLE
DIVIDER,POWER,RADIO FREQUENCY
8721
5360-01-111-7911INTERCHANGEABLE
SPRING,HELICAL,COMPRESSION
75-LM
5930-01-114-7059INTERCHANGEABLE
SWITCH,ROTARY
8721
5120-01-128-3056INTERCHANGEABLE
ALIGNMENT TOOL,ELECTRONIC EQUIPM
7907108-00
4820-01-131-5917INTERCHANGEABLE
VALVE,SAFETY RELIEF
E8721KM51M
4820-01-278-5587INTERCHANGEABLE
STEM,FLUID VALVE
8721

Frequently Asked Questions

What is NSN 4820-00-238-6473?

NSN 4820-00-238-6473 is a Valve,safety Relief, manufactured by Anderson Greenwood Lp Dba Anderson Greenwood Crosby, classified under FSC 4820 (No Item Name Available). Status: active.

What are the part numbers for NSN 4820-00-238-6473?

NSN 4820-00-238-6473 has 2 cross-referenced part numbers: 8721 (Anderson Greenwood Lp Dba Anderson Greenwood Crosby), E87230GM51M (Anderson Greenwood Lp Dba Anderson Greenwood Crosby).

What NSN replaces 4820-00-238-6473?

There are 12 known substitutes for 4820-00-238-6473: 3110-00-151-9560, 5935-00-259-4415, 4730-00-326-2443 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 8721?

Key specifications for 8721: Criticality Code Justification: ZZZY; Reference Number Differentiating Characteristics: MATERIAL WILL BE IN ACCORDANCE WITH NAVICP MECH; ACTIVITY HX QUALITY CONTROL, MANUFACTURING AND TESTING SPECIFICATIONS.. 2 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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