PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

AT149811Valve,safety Relief

Deere & Company Dba Deere John Co · NSN 4820-01-396-1942 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-01-396-1942 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-396-1942. Primary manufacturer part number: AT149811.
Features
  • Valve,safety Relief — FSC 4820
  • Flow Control Device: PISTON
  • Connection Style: PLAIN (SCREW-IN CARTRIDGE) ALL ENDS
  • Connection Type: THREADED CARTRIDGE ALL ENDS
  • Style Designator: SCREW-IN CARTRIDGE
  • Thread Series Designator: NPT ALL ENDS
  • Disk Loading Method: SPRING
  • Valve Operation Method: AUTOMATIC
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
General Description

The Valve,safety Relief, cataloged under National Stock Number 4820-01-396-1942, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Deere & Company Dba Deere John Co. Government technical data includes 7 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 4 manufacturers, enabling identification through both NSN and commercial part number lookups. 2 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN4820-01-396-1942
Primary Part NumberAT149811
Item NameValve,safety Relief
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerDeere & Company Dba Deere John Co
StatusCANCELLED
Flow Control DevicePISTON
Connection StylePLAIN (SCREW-IN CARTRIDGE) ALL ENDS
Connection TypeTHREADED CARTRIDGE ALL ENDS
Style DesignatorSCREW-IN CARTRIDGE
Thread Series DesignatorNPT ALL ENDS
Disk Loading MethodSPRING
Valve Operation MethodAUTOMATIC
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 2
5920-00-142-48498822146 INTERCHANGEABLE
Fuse,cartridge
Combat Capabilities Development Command (ccdc) Armaments Center Dba Ccdc Div Us Army Research, Development and Engineering Command Armament
3120-01-040-486076859 INTERCHANGEABLE
Bearing,plain,self-Aligning
Rbc Transport Dynamics Corp Div Rbc Transport Dynamics
Cross-Reference Index
Part NumberManufacturer
AT149811 PRIMARY Deere & Company Dba Deere John Co (USA)
6003405058 Linde Hydraulics Corp Div Linde Hydraulics (USA)
76859 Little Giant Crane and Shovel Inc (USA)
AT149811 Deere & Co (USA)
Related Parts
5920-00-142-4849INTERCHANGEABLE
FUSE,CARTRIDGE
8822146
3120-01-040-4860INTERCHANGEABLE
BEARING,PLAIN,SELF-ALIGNING
76859

Frequently Asked Questions

What is NSN 4820-01-396-1942?

NSN 4820-01-396-1942 is a Valve,safety Relief, manufactured by Deere & Company Dba Deere John Co, classified under FSC 4820 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 4820-01-396-1942?

NSN 4820-01-396-1942 has 4 cross-referenced part numbers: AT149811 (Deere & Company Dba Deere John Co), 6003405058 (Linde Hydraulics Corp Div Linde Hydraulics), 76859 (Little Giant Crane and Shovel Inc), AT149811 (Deere & Co).

What NSN replaces 4820-01-396-1942?

There are 2 known substitutes for 4820-01-396-1942: 5920-00-142-4849, 3120-01-040-4860. Verify interchangeability with system specifications before substitution.

What are the specifications of AT149811?

Key specifications for AT149811: Flow Control Device: PISTON; Connection Style: PLAIN (SCREW-IN CARTRIDGE) ALL ENDS; Connection Type: THREADED CARTRIDGE ALL ENDS; Style Designator: SCREW-IN CARTRIDGE. 8 total characteristics are documented in the Federal Logistics Information System.

Is NSN 4820-01-396-1942 still in active supply?

NSN 4820-01-396-1942 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.

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