PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

A02B2HZNValve,safety Relief

Sterling Hydraulics Inc · NSN 4820-01-518-2495 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-01-518-2495 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-518-2495. Primary manufacturer part number: A02B2HZN.
Features
  • Valve,safety Relief — FSC 4820
  • Valve Operation Method: AUTOMATIC
  • Connection Type: THREADED EXTERNAL BOSS FIRST END
  • Maximum Operating Temp: 210.0 FAHRENHEIT SINGLE RESPONSE DEGF
  • Nominal Thread Size: 0.750 INCHES FIRST END IN
  • Style Designator: SCREW-IN CARTRIDGE
  • Media for Which Designed: OIL, LUBRICATING, DIESTER BASE SINGLE RESPONSE
  • Thread Series Designator: UNF FIRST END
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
General Description

The Valve,safety Relief, cataloged under National Stock Number 4820-01-518-2495, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Sterling Hydraulics Inc. Government technical data includes 13 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 5 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 10 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4820-01-518-2495
Primary Part NumberA02B2HZN
Item NameValve,safety Relief
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerSterling Hydraulics Inc
StatusACTIVE
Valve Operation MethodAUTOMATIC
Connection TypeTHREADED EXTERNAL BOSS FIRST END
Maximum Operating Temp210.0 FAHRENHEIT SINGLE RESPONSE DEGF
Nominal Thread Size0.750 INCHES FIRST END IN
Style DesignatorSCREW-IN CARTRIDGE
Media for Which DesignedOIL, LUBRICATING, DIESTER BASE SINGLE RESPONSE
Thread Series DesignatorUNF FIRST END
Operating Pressure3000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
Adjustable Pressure Range+72.0 TO 3000.0 POUNDS PER SQUARE INCH LBS
Valve Discharge Flow Rate8.0 GALLONS PER MINUTE
Connection StyleEXTERNAL SEAT FOR GASKET SEAL (BOSS) FIRST END
Minimum Operating Temp-20.0 FAHRENHEIT DEGF
Thread DirectionRIGHT-HAND FIRST END
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 10
5325-00-043-39575074-1 INTERCHANGEABLE
Ring,retaining
Transdigm Inc
1650-00-083-1287CS-1650-SV-0711 INTERCHANGEABLE
Parts Kit,pump
Dla Land and Maritime Dba Engineering and Technical Support Div Document Standardization Division (vendor Item Drawings)
5815-00-234-4856 INTERCHANGEABLE
Bar,selector,teletypewriter
3455-00-266-9451 INTERCHANGEABLE
File,rotary
4010-00-889-668310106011 INTERCHANGEABLE
Wire Rope Assembly,single Leg
Us Army Aviation and Missile Command
1440-01-084-763550741 INTERCHANGEABLE
Housing,switch
Ducommun Labarge Technologies, Inc Dba Ducommun Labarge Technologies, Inc
4940-01-117-905930990 INTERCHANGEABLE
Skimmer
Gardner Denver Water Jetting Systems, Inc. Div Engineered Package Group
4820-01-518-247550741 AND B/M50741 INTERCHANGEABLE
Valve Assembly,manifold
Allied Systems Company Dba Allied Systems Co
4820-01-518-2500R04B4-5.0NS INTERCHANGEABLE
Valve,linear,directional Control
Sterling Hydraulics Inc
4820-01-518-6598D02B2-0.2N INTERCHANGEABLE
Valve,check
Sterling Hydraulics Inc
Cross-Reference Index
Part NumberManufacturer
243022 Allied Systems Company Dba Allied Systems Co (USA)
A02B2HZN PRIMARY Sterling Hydraulics Inc (USA)
A02B2HZN F.p.hydraulique (FRA)
B/M 50741 ITEM 6 Allied Systems Company Dba Allied Systems Co (USA)
50741 Allied Systems Company Dba Allied Systems Co (USA)
Related Parts
5325-00-043-3957INTERCHANGEABLE
RING,RETAINING
5074-1
1650-00-083-1287INTERCHANGEABLE
PARTS KIT,PUMP
CS-1650-SV-0711
5815-00-234-4856INTERCHANGEABLE
BAR,SELECTOR,TELETYPEWRITER
3455-00-266-9451INTERCHANGEABLE
FILE,ROTARY
4010-00-889-6683INTERCHANGEABLE
WIRE ROPE ASSEMBLY,SINGLE LEG
10106011
1440-01-084-7635INTERCHANGEABLE
HOUSING,SWITCH
50741
4940-01-117-9059INTERCHANGEABLE
SKIMMER
30990
4820-01-518-2475INTERCHANGEABLE
VALVE ASSEMBLY,MANIFOLD
50741 AND B/M50741
4820-01-518-2500INTERCHANGEABLE
VALVE,LINEAR,DIRECTIONAL CONTROL
R04B4-5.0NS
4820-01-518-6598INTERCHANGEABLE
VALVE,CHECK
D02B2-0.2N

Frequently Asked Questions

What is NSN 4820-01-518-2495?

NSN 4820-01-518-2495 is a Valve,safety Relief, manufactured by Sterling Hydraulics Inc, classified under FSC 4820 (No Item Name Available). Status: active.

What are the part numbers for NSN 4820-01-518-2495?

NSN 4820-01-518-2495 has 5 cross-referenced part numbers: 243022 (Allied Systems Company Dba Allied Systems Co), A02B2HZN (Sterling Hydraulics Inc), A02B2HZN (F.p.hydraulique), B/M 50741 ITEM 6 (Allied Systems Company Dba Allied Systems Co), 50741 (Allied Systems Company Dba Allied Systems Co).

What NSN replaces 4820-01-518-2495?

There are 10 known substitutes for 4820-01-518-2495: 5325-00-043-3957, 1650-00-083-1287, 5815-00-234-4856 and 7 more. Verify interchangeability with system specifications before substitution.

What are the specifications of A02B2HZN?

Key specifications for A02B2HZN: Valve Operation Method: AUTOMATIC; Connection Type: THREADED EXTERNAL BOSS FIRST END; Maximum Operating Temp: 210.0 FAHRENHEIT SINGLE RESPONSE DEGF; Nominal Thread Size: 0.750 INCHES FIRST END IN. 15 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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