PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

B56493Valve Assy,relief

Eaton Aerospace, Llc Dba Jackson South · NSN 1020-00-590-5813 · FSC 1020 · No Item Name Available
Verified by PartsTable
NSN 1020-00-590-5813 — this item is cataloged by the U.S. Government under National Stock Number 1020-00-590-5813. Primary manufacturer part number: B56493.
Features
  • Valve Assy,relief — FSC 1020
  • 3 verified cross-references
  • Primary manufacturer: Eaton Aerospace, Llc Dba Jackson South
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
General Description

The Valve Assy,relief, cataloged under National Stock Number 1020-00-590-5813, is classified within Federal Supply Class 1020 (No Item Name Available) of the Weapons group. The primary manufacturer of record is Eaton Aerospace, Llc Dba Jackson South. This item has 3 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 4 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Catalog Facts
Item NameValve Assy,relief
FSC / FSG1020 — No Item Name Available (FSG 10)
ManufacturersEaton Aerospace, Llc Dba Jackson South (CAGE 62983); Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier (CAGE 10001)
Technical Specifications
ParameterValue
NSN1020-00-590-5813
Primary Part NumberB56493
Item NameValve Assy,relief
FSC / FSG1020 / 10 — No Item Name Available
ManufacturerEaton Aerospace, Llc Dba Jackson South
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 4
4320-00-013-352656493 INTERCHANGEABLE
Valve Head,hydraulic Motor-Pump
Parker Hannifin Corporation Div Hydraulic Systems Division
3110-00-100-0668659 INTERCHANGEABLE
Cone and Rollers,tapered Roller
The Timken Corporation
4820-01-150-725810282ELJ INTERCHANGEABLE
Valve,regulating,fluid Pressure
Fairchild Industrial Products Company
6645-01-253-972556493 INTERCHANGEABLE
Meter,time Totalizing
Maxima Technologies & Systems Llc
Cross-Reference Index
Part NumberManufacturer
B56493 PRIMARY Eaton Aerospace, Llc Dba Jackson South (USA)
56493 Eaton Aerospace, Llc Dba Jackson South (USA)
293865PC1 PRIMARY Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier (USA)
Related Parts
4320-00-013-3526INTERCHANGEABLE
VALVE HEAD,HYDRAULIC MOTOR-PUMP
56493
3110-00-100-0668INTERCHANGEABLE
CONE AND ROLLERS,TAPERED ROLLER
659
4820-01-150-7258INTERCHANGEABLE
VALVE,REGULATING,FLUID PRESSURE
10282ELJ
6645-01-253-9725INTERCHANGEABLE
METER,TIME TOTALIZING
56493

Frequently Asked Questions

What is NSN 1020-00-590-5813?

NSN 1020-00-590-5813 is a Valve Assy,relief, manufactured by Eaton Aerospace, Llc Dba Jackson South, classified under FSC 1020 (No Item Name Available). Status: active.

What are the part numbers for NSN 1020-00-590-5813?

NSN 1020-00-590-5813 has 3 cross-referenced part numbers: B56493 (Eaton Aerospace, Llc Dba Jackson South), 56493 (Eaton Aerospace, Llc Dba Jackson South), 293865PC1 (Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier).

What NSN replaces 1020-00-590-5813?

There are 4 known substitutes for 1020-00-590-5813: 4320-00-013-3526, 3110-00-100-0668, 4820-01-150-7258 and 1 more. Verify interchangeability with system specifications before substitution.

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