PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

J50M21Valve,safety Relief

Parker-Hannifin Corporation Dba Pneutronics Div Hydraulic Valve Division · NSN 4820-00-933-1042 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-00-933-1042 — this item is cataloged by the U.S. Government under National Stock Number 4820-00-933-1042. Primary manufacturer part number: J50M21.
Features
  • Valve,safety Relief — FSC 4820
  • Style Designator: ANGLE
  • Flow Control Device: BALL
  • Thread Series Designator: NPT ALL ENDS
  • Connection Type: THREADED INTERNAL PIPE ALL ENDS
  • Valve Operation Method: AUTOMATIC
  • Material: STEEL OVERALL
  • Nominal Thread Size: 0.750 INCHES ALL ENDS IN
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
  • Applications requiring Steel Overall construction
General Description

The Valve,safety Relief, cataloged under National Stock Number 4820-00-933-1042, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Parker-Hannifin Corporation Dba Pneutronics Div Hydraulic Valve Division. Government technical data includes 9 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 7 commercial cross-references from 5 manufacturers, enabling identification through both NSN and commercial part number lookups. 3 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4820-00-933-1042
Primary Part NumberJ50M21
Item NameValve,safety Relief
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerParker-Hannifin Corporation Dba Pneutronics Div Hydraulic Valve Division
StatusACTIVE
Style DesignatorANGLE
Flow Control DeviceBALL
Thread Series DesignatorNPT ALL ENDS
Connection TypeTHREADED INTERNAL PIPE ALL ENDS
Valve Operation MethodAUTOMATIC
MaterialSTEEL OVERALL
Nominal Thread Size0.750 INCHES ALL ENDS IN
Connection StylePLAIN,OPTIONAL END(PIPE) ALL ENDS
Thread DirectionRIGHT-HAND ALL ENDS
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 3
2520-00-358-9670A10500M7 INTERCHANGEABLE
Axle,assembly Drive
Clark Material Handling Company
5330-00-599-128511582 INTERCHANGEABLE
Gasket
Arvinmeritor Inc
5305-01-078-6167130167 INTERCHANGEABLE
Screw,cap,hexagon Head
Brp Us Inc
Cross-Reference Index
Part NumberManufacturer
130167H1 Komatsu American Intl Co (USA)
380-130167-1 Komatsu American Intl Co (USA)
130167 H1 Navistar Intl Corp Melrose Park Engine Plant Location /melrose Park/ (USA)
J50M21 Parker Hannifin Corporation Dba Gresen Hydraulics Div Hydraulic Valve Division (USA)
380-130167-1 Komatsu America Corp. (USA)
130167 Komatsu American Intl Co (USA)
J50M21 PRIMARY Parker-Hannifin Corporation Dba Pneutronics Div Hydraulic Valve Division (USA)
Related Parts
2520-00-358-9670INTERCHANGEABLE
AXLE,ASSEMBLY DRIVE
A10500M7
5330-00-599-1285INTERCHANGEABLE
GASKET
11582
5305-01-078-6167INTERCHANGEABLE
SCREW,CAP,HEXAGON HEAD
130167

Frequently Asked Questions

What is NSN 4820-00-933-1042?

NSN 4820-00-933-1042 is a Valve,safety Relief, manufactured by Parker-Hannifin Corporation Dba Pneutronics Div Hydraulic Valve Division, classified under FSC 4820 (No Item Name Available). Status: active.

What are the part numbers for NSN 4820-00-933-1042?

NSN 4820-00-933-1042 has 7 cross-referenced part numbers: 130167H1 (Komatsu American Intl Co), 380-130167-1 (Komatsu American Intl Co), 130167 H1 (Navistar Intl Corp Melrose Park Engine Plant Location /melrose Park/), J50M21 (Parker Hannifin Corporation Dba Gresen Hydraulics Div Hydraulic Valve Division), 380-130167-1 (Komatsu America Corp.) and 2 more.

What NSN replaces 4820-00-933-1042?

There are 3 known substitutes for 4820-00-933-1042: 2520-00-358-9670, 5330-00-599-1285, 5305-01-078-6167. Verify interchangeability with system specifications before substitution.

What are the specifications of J50M21?

Key specifications for J50M21: Style Designator: ANGLE; Flow Control Device: BALL; Thread Series Designator: NPT ALL ENDS; Connection Type: THREADED INTERNAL PIPE ALL ENDS. 9 total characteristics are documented in the Federal Logistics Information System.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com